Ultimate Nursing Bundle
Reading an EKG Strip
The paper, the waves, and a 5-step routine to use on every strip
The paper
- Standard speed 25 mm/sec.
- 1 small box = 0.04 sec (1 mm). 1 large box = 0.20 sec (5 small boxes).
- 5 large boxes = 1 second; 30 large boxes = 6 seconds.
- Height: 10 small boxes = 1 mV (amplitude, not time).
Heart rate: three methods
- 6-second method (any rhythm, best for irregular): count QRS complexes in 6 sec × 10.
- 300 method (regular only): 300 ÷ number of large boxes between two R waves.
- 1500 method (regular, most precise): 1500 ÷ number of small boxes between R waves.
300 sequence: 1 box = 300, 2 = 150, 3 = 100, 4 = 75, 5 = 60, 6 = 50.
Normal sinus rhythm (lead II)
Normal intervals (adult)
| Measure | Normal | What it means |
|---|---|---|
| Heart rate | 60–100/min | <60 brady, >100 tachy |
| PR interval | 0.12–0.20 s | 3–5 small boxes; AV conduction time |
| QRS | 0.06–0.10 s | ≥0.12 s = wide (ventricular origin or bundle branch block) |
| QTc | <0.45 s (men) <0.46 s (women) | QTc >0.50 s = high risk of torsades |
5-step routine
- Look at the patient first. Pulse, BP, LOC, symptoms. Treat the patient, not the monitor.
- Rate: atrial and ventricular.
- Rhythm: regular or irregular? (march out the R–R intervals).
- P waves: present? upright? one per QRS? any P without a QRS?
- PR and QRS: measure. Constant or changing PR? Narrow or wide QRS?
5-lead placement
- White: right arm (below right clavicle). Black: left arm.
- Green: right lower chest/abdomen. Red: left lower chest/abdomen.
- Brown (chest): V1, 4th intercostal space, right sternal border (or as ordered).
Artifact vs. real VF? Check the patient. A talking patient with a "VF" strip has loose leads or is moving.
Sinus Rhythms
The impulse starts in the SA node: every P wave is followed by a QRS
Sinus bradycardia
Treat only if symptomaticSymptomatic if: hypotension, dizziness/syncope, altered mental status, chest pain, signs of shock or acute HF.
- Atropine 1 mg IV, repeat every 3–5 min, max 3 mg. Updated (old dose 0.5 mg)
- If atropine fails: transcutaneous pacing, or dopamine 5–20 mcg/kg/min or epinephrine 2–10 mcg/min infusion.
- Treat the cause; hold rate-lowering drugs and notify the prescriber.
Sinus tachycardia
A response, not a disease: find the causeWatch for: ↓ filling time → ↓ cardiac output, angina in CAD.
Sinus arrhythmia
Rate varies with breathing (speeds up on inspiration, slows on expiration). Normal in children and young adults. No treatment.
Sinus arrest / pause
SA node fails to fire: a flat gap with no P, QRS or T. Report long pauses (e.g., >3 sec) and symptoms; may need a pacemaker (sick sinus syndrome).
Cushing's triad (↑ICP): bradycardia + widening pulse pressure (rising systolic BP) + irregular respirations. This is a late sign: notify immediately.
Atrial Rhythms and SVT
Narrow-complex tachycardias that start above the ventricles
Atrial fibrillation (A-fib)
Irregularly irregular, no P wavesCauses: HTN, CAD, HF, valve disease, age, hyperthyroidism, alcohol, sleep apnea, obesity, after heart surgery.
Assess: apical pulse for a full minute (pulse deficit), palpitations, fatigue, dyspnea, dizziness.
- Unstable → synchronized cardioversion.
- Rate control: beta blocker (metoprolol), diltiazem (not in HFrEF), digoxin.
- Rhythm control: cardioversion, amiodarone and others, catheter ablation.
- A-fib ≥48 h or unknown: anticoagulate ≥3 weeks or TEE before elective cardioversion, and ≥4 weeks after.
- Anticoagulation by CHA₂DS₂-VASc score: DOACs preferred over warfarin, except mechanical valve or moderate–severe mitral stenosis (warfarin). Updated
Atrial flutter
Sawtooth wavesP waves replaced by sawtooth flutter waves (best in II, III, aVF); PR not measurable; QRS narrow. A regular narrow rhythm at exactly ~150 → think flutter with 2:1 block.
Treatment: same rules as A-fib (rate control, cardioversion, anticoagulation). Catheter ablation is often curative.
SVT
Sudden start, sudden stopStable: vagal maneuvers (modified Valsalva), then adenosine 6 mg rapid IV push into a proximal IV followed immediately by a 20 mL saline flush; if needed 12 mg. Warn: brief chest pressure, flushing, and a few seconds of asystole on the monitor are expected. Run a strip.
Unstable: synchronized cardioversion.
CHA₂DS₂-VASc (stroke risk in A-fib)
| C CHF | 1 | H Hypertension | 1 |
| A₂ Age ≥75 | 2 | D Diabetes | 1 |
| S₂ Stroke/TIA/thromboembolism | 2 | V Vascular disease (MI, PAD) | 1 |
| A Age 65–74 | 1 | Sc Sex category (female) | 1 |
Anticoagulation recommended at ≥2 (men) or ≥3 (women); considered at 1 (men) or 2 (women).
Adenosine and diltiazem are avoided in A-fib with a wide, very fast, irregular QRS (possible WPW): they can trigger VF.
Ventricular Rhythms
Wide QRS (≥0.12 s): the impulse starts in the ventricles
Premature ventricular contractions (PVCs)
An early, wide, bizarre beatPatterns: bigeminy (every 2nd beat), trigeminy (every 3rd), couplet (2 in a row), 3 or more in a row = VT.
Causes: hypokalemia, hypomagnesemia, hypoxia, MI/ischemia, HF, caffeine, nicotine, alcohol, stimulants, digoxin toxicity.
- Assess the patient and pulse (a PVC may not produce a pulse: pulse deficit).
- Check K⁺ and Mg²⁺, oxygenation, and meds; treat the cause.
- Report: increasing frequency, couplets, runs, multifocal PVCs, or R-on-T (PVC landing on the T wave can trigger VT/VF).
- Occasional PVCs in a healthy person are often benign.
Ventricular tachycardia (VT)
Check for a pulse: it decides the treatment| Patient status | Treatment |
|---|---|
| Pulseless | Treat as VF: CPR + defibrillation, epinephrine, amiodarone or lidocaine. |
| Pulse, unstable | Synchronized cardioversion (sedate if possible). |
| Pulse, stable | 12-lead EKG, expert consult; antiarrhythmic such as amiodarone 150 mg IV over 10 min (or procainamide); correct K⁺/Mg²⁺. |
Causes: MI/ischemia, cardiomyopathy, HF, low K⁺ or Mg²⁺, hypoxia, acidosis, drug toxicity (digoxin, QT-prolonging drugs).
Torsades de pointes
Polymorphic VT + long QTQRS "twists" around the baseline, getting taller then shorter.
Causes: QT-prolonging drugs (haloperidol, ondansetron, methadone, macrolides, fluoroquinolones, citalopram, amiodarone, sotalol), low Mg²⁺, low K⁺, low Ca²⁺.
Treatment: magnesium sulfate 1–2 g IV; stop QT-prolonging drugs; correct K⁺. Pulseless or unstable → defibrillate (unsynchronized: polymorphic rhythms can't be synced).
Lidocaine is an accepted alternative to amiodarone for shock-refractory VF/pulseless VT.
Older guides that list "vasopressin 40 units" for VT/VF are out of date.
Lethal Rhythms: VF, Asystole and PEA
No pulse = start CPR. Then ask one question: shockable or not?
Ventricular fibrillation (VF)
ShockablePatient: unresponsive, no pulse, not breathing or only gasping. No cardiac output.
- Start CPR; defibrillate as soon as possible (biphasic 120–200 J per device; monophasic 360 J).
- Resume CPR immediately after each shock for 2 min.
- Epinephrine 1 mg IV/IO every 3–5 min (after 2nd shock).
- Amiodarone 300 mg IV/IO, then 150 mg; or lidocaine 1–1.5 mg/kg, then 0.5–0.75 mg/kg.
Asystole
Not shockableConfirm it: check the patient, the leads and connections, turn up the gain, check a second lead (fine VF can look flat).
Treatment: high-quality CPR + epinephrine 1 mg as soon as possible, then every 3–5 min; look for reversible causes. Never defibrillate asystole.
Pulseless electrical activity (PEA)
The monitor shows an organized rhythm (it may even look normal) but there is no palpable pulse.
Treatment: same as asystole: CPR, epinephrine as soon as possible, find and fix the cause (Hs and Ts). Not shockable.
Reversible causes: the Hs and Ts
| Hs | |
|---|---|
| Hypovolemia | Fluids, blood |
| Hypoxia | Airway, oxygen, ventilation |
| Hydrogen ion (acidosis) | Ventilation; bicarbonate in selected cases |
| Hypo-/hyperkalemia | Correct K⁺ (calcium for high K⁺) |
| Hypothermia | Rewarm |
| Ts | |
|---|---|
| Tension pneumothorax | Needle decompression |
| Tamponade (cardiac) | Pericardiocentesis |
| Toxins | Antidote (e.g., naloxone) |
| Thrombosis, pulmonary (PE) | Consider fibrinolytic |
| Thrombosis, coronary (MI) | Cath lab after ROSC |
Heart Blocks
A delay or block between the atria (P) and the ventricles (QRS)
1st-degree AV block
Usually benignPR >0.20 s and constant; every P is followed by a QRS. Rate and rhythm usually normal.
Causes: beta blockers, CCBs, digoxin, amiodarone, high vagal tone, inferior MI, hyperkalemia, aging.
Care: usually no treatment; review meds; watch for progression.
2nd-degree type I (Wenckebach)
Mobitz IPR gets progressively longer until one P is not followed by a QRS (dropped beat), then the cycle repeats. Ventricular rhythm irregular; QRS usually narrow.
Care: usually transient; treat only if symptomatic (atropine); review meds.
2nd-degree type II
Mobitz II: dangerousPR constant, then a QRS is suddenly dropped without warning. QRS often wide (block below the AV node).
Danger: can progress suddenly to 3rd-degree block.
Care: transcutaneous pacing pads on, prepare for a pacemaker; atropine is unlikely to work.
3rd-degree (complete) block
EmergencyP waves and QRS complexes are completely independent: Ps "march through" at their own regular rate; PR varies with no pattern; atrial rate > ventricular rate (escape rhythm 20–60).
Care: transcutaneous pacing, dopamine or epinephrine infusion as a bridge, then a permanent pacemaker.
Compare at a glance
| Block | PR interval | Dropped QRS? |
|---|---|---|
| 1st degree | Long, constant | No |
| 2nd, type I | Gets longer each beat | Yes, after the longest PR |
| 2nd, type II | Constant | Yes, without warning |
| 3rd degree | No relationship | P and QRS independent |
Longer, longer, longer, drop: then you have a Wenckebach.
If some Ps don't get through, then you have a Mobitz II.
If Ps and Qs don't agree, then you have a third degree."
Pacemaker nursing
- Know the set rate; a pacer spike should be followed by a P (atrial) or a wide QRS (ventricular): capture.
- Failure to capture: spike with no QRS after it. Failure to sense: spikes in the wrong place, including on T waves.
- Transcutaneous pacing is painful: give analgesia/sedation as ordered; confirm a pulse matches the paced rate.
- After a permanent pacer: limit raising the arm on the insertion side above the shoulder as instructed (often for a few weeks); watch the site for bleeding, hematoma, infection.
- Carry the device ID card; tell providers before MRI (many devices are MRI-conditional only); keep phones and magnets ~6 in (15 cm) from the device.
CPR and ACLS Essentials
Based on the 2025 AHA Guidelines for CPR and Emergency Cardiovascular Care
Adult high-quality CPR
- Check responsiveness; shout for help; activate emergency response; get the AED.
- Check breathing and carotid pulse together for ≤10 sec.
- Compress the lower half of the sternum: 100–120/min, depth at least 2 in (5 cm) but not more than 2.4 in (6 cm), full chest recoil.
- 30:2 compressions to breaths without an advanced airway.
- With an advanced airway: continuous compressions + 1 breath every 6 sec.
- Minimize pauses (<10 sec); switch compressors every 2 min; avoid over-ventilation.
AED steps
- Turn it on and follow the prompts.
- Bare, dry chest; pads on (remove medication patches; place pads away from an implanted device).
- Stand clear while it analyzes.
- If shock advised: everyone clear, shock.
- Resume CPR immediately, starting with compressions. Don't stop to check a pulse after the shock.
Suspected opioid overdose: give naloxone, but CPR comes first if there's no pulse.
Cardiac arrest: the two pathways
Shockable: VF / pulseless VT
- Shock → CPR 2 min (get IV/IO access).
- Shock → CPR 2 min + epinephrine 1 mg every 3–5 min; consider advanced airway.
- Shock → CPR 2 min + amiodarone 300 mg (2nd dose 150 mg) or lidocaine; treat reversible causes.
Non-shockable: asystole / PEA
- CPR 2 min + epinephrine 1 mg as soon as possible, then every 3–5 min.
- Rhythm check every 2 min. If it becomes shockable, switch pathways.
- Search for and treat the Hs and Ts.
Defibrillation vs. cardioversion
| Defibrillation | Synchronized cardioversion | |
|---|---|---|
| For | Pulseless VF/VT; polymorphic VT | Unstable tachycardia with a pulse (A-fib, flutter, SVT, monomorphic VT) |
| Sync | Off | On: shock timed to the R wave so it doesn't land on the T wave |
| Patient | Unconscious | Often awake: sedate if possible; consent if time allows |
If the patient goes into VF during cardioversion: turn sync off and defibrillate.
Key ACLS drugs
| Epinephrine | 1 mg IV/IO every 3–5 min in arrest |
| Amiodarone | Arrest: 300 mg, then 150 mg. Stable VT with pulse: 150 mg over 10 min |
| Lidocaine | 1–1.5 mg/kg, then 0.5–0.75 mg/kg |
| Adenosine | 6 mg rapid push + flush, then 12 mg |
| Atropine | 1 mg every 3–5 min, max 3 mg (bradycardia) |
| Magnesium | 1–2 g IV (torsades) |
After ROSC
- Secure airway; SpO₂ 90–98%; PaCO₂ 35–45 (avoid hyperventilation).
- Avoid hypotension: MAP ≥65 mmHg.
- 12-lead EKG: STEMI → emergency cath.
- Not following commands: deliberate temperature control 32–37.5°C (89.6–99.5°F) for ≥36 h; prevent fever. Updated
- Check glucose; ongoing neuro assessment.
Hypertension
2025 AHA/ACC High Blood Pressure Guideline
Blood pressure categories (adults)
| Category | Systolic | Diastolic | |
|---|---|---|---|
| Normal | <120 | and | <80 |
| Elevated | 120–129 | and | <80 |
| Stage 1 hypertension | 130–139 | or | 80–89 |
| Stage 2 hypertension | ≥140 | or | ≥90 |
| Severe hypertension | >180 | and/or | >120 |
If the two numbers fall in different categories, use the higher category. Diagnose from the average of ≥2 readings on ≥2 occasions (home or ambulatory readings confirm).
Measure it right
- No caffeine, smoking or exercise for 30 min; empty bladder.
- Sit 5 min, back supported, feet flat, legs uncrossed.
- Arm supported at heart level; bare arm.
- Correct cuff size: bladder encircles ~80% of the arm. Too small → falsely high; too large → falsely low.
- No talking during the reading.
When to start medication
- Everyone with elevated BP or hypertension: lifestyle changes.
- Stage 2: start medication; often 2 drugs, preferably in a single combined pill.
- Stage 1: start medication if the person has heart disease, diabetes, CKD or a PREVENT 10-year cardiovascular risk ≥7.5%; otherwise lifestyle for 3–6 months, then medication if BP stays ≥130/80.
- Target: <130/80 for most adults (lower systolic, toward 120, if tolerated).
First-line drug classes
Thiazide-type diuretic (chlorthalidone, HCTZ) · ACE inhibitor or ARB (never both together) · long-acting dihydropyridine CCB (amlodipine).
Pregnancy: avoid ACE inhibitors and ARBs; use labetalol, extended-release nifedipine, or methyldopa.
Lifestyle (each lowers systolic BP)
| Weight loss | ~1 mmHg per kg lost |
| DASH eating pattern | Fruit, vegetables, whole grains, low-fat dairy |
| Sodium | Ideally <1,500 mg/day, or cut by ≥1,000 mg/day |
| Potassium | Potassium-rich foods (unless CKD or K⁺-raising drugs) |
| Activity | ≥150 min/week moderate (or 75 min vigorous) aerobic + resistance training ≥2 days/week |
| Alcohol | Ideally none; at most 1/day (women), 2/day (men) |
| Smoking | Stop |
Severe hypertension: urgency vs. emergency
Without new organ damage: resume or adjust oral meds and arrange close follow-up. Lower gradually.
Hypertensive emergency = severe BP plus acute target-organ damage: brain (headache, confusion, seizure, stroke), eyes (vision change), heart (chest pain, pulmonary edema), aorta (dissection), kidneys (↓ urine output, ↑ creatinine).
- ICU; arterial line; IV titratable drug (nicardipine, clevidipine, labetalol, esmolol).
- Lower BP by no more than 25% in the first hour, then to ~160/100–110 over the next 2–6 h, then toward normal over 24–48 h.
- Exceptions: aortic dissection (rapidly to systolic <120), severe preeclampsia, acute stroke (special targets).
Orthostatic hypotension
Drop of ≥20 mmHg systolic or ≥10 mmHg diastolic within 3 min of standing. Teach: rise slowly, dangle legs before standing, hydrate, report dizziness. Common with diuretics, alpha blockers, and in older adults.
Heart Failure
2022 AHA/ACC/HFSA Heart Failure Guideline
Types by ejection fraction (EF)
| HFrEF (reduced) | EF ≤40% |
| HFmrEF (mildly reduced) | EF 41–49% |
| HFpEF (preserved) | EF ≥50% |
| HFimpEF (improved) | Was ≤40%, now >40% |
BNP >100 pg/mL or NT-proBNP >300 pg/mL supports HF; levels fall as HF improves. Normal EF is ~50–70%.
Left-sided vs. right-sided
Left: backs up into the Lungs
- Dyspnea, orthopnea, PND
- Crackles, cough, pink frothy sputum
- S3 gallop, tachycardia
- Fatigue, confusion, ↓ urine output
Right: backs up into the Rest of the body
- JVD
- Dependent edema, weight gain
- Hepatomegaly, ascites
- Anorexia, nausea
The most common cause of right-sided HF is left-sided HF.
HFrEF: the four core drug classes Updated
| Class | Examples | Nursing points |
|---|---|---|
| ARNI (preferred) or ACEi/ARB | sacubitril/valsartan; lisinopril; losartan | Hypotension, ↑K⁺, renal function. 36-hour gap when switching from an ACE inhibitor to an ARNI (angioedema risk). |
| Evidence-based beta blocker | carvedilol, metoprolol succinate, bisoprolol | Start low, go slow; may feel more tired at first. Hold for symptomatic bradycardia or hypotension. |
| Mineralocorticoid receptor antagonist (MRA) | spironolactone, eplerenone | Check K⁺ and creatinine; avoid potassium supplements and salt substitutes. |
| SGLT2 inhibitor | dapagliflozin, empagliflozin | Benefit with or without diabetes. Genital infections, volume depletion, rare euglycemic DKA; usually held ~3 days before surgery. |
Loop diuretics (furosemide) relieve congestion and symptoms but don't prolong life. For HFpEF, SGLT2 inhibitors and diuretics are the mainstay.
Acute decompensated HF
- High Fowler's; oxygen to keep SpO₂ ≥90% (non-invasive ventilation if needed).
- IV loop diuretic; monitor urine output, K⁺, Mg²⁺, creatinine, BP.
- Vasodilators (nitroglycerin) if BP allows.
- Strict I&O, daily weight, lung sounds.
- Avoid: NSAIDs, diltiazem/verapamil (in HFrEF), thiazolidinediones (pioglitazone).
Teaching for home
- Weigh daily: same time, same scale, after voiding, before breakfast, similar clothing.
- Report a gain of >1 kg (2–3 lb) in a day or 2 kg (5 lb) in a week, or worse breathlessness, swelling, or needing more pillows.
- Limit sodium (commonly <2–3 g/day); fluid limits only if ordered.
- Take meds even when feeling well; check BP/pulse as taught.
- Stay active (cardiac rehab); flu, COVID and pneumococcal vaccines.
Digoxin
Check the apical pulse for 1 full minute first; hold and notify if <60/min (adults) or as ordered. Therapeutic level 0.5–2.0 ng/mL (0.5–0.9 is the target in HF). Toxicity: anorexia, nausea, vomiting, visual changes (yellow-green halos), bradycardia, dysrhythmias. Hypokalemia increases toxicity. Antidote: digoxin immune fab.
Classes I–IV (NYHA) describe symptoms and can go up and down. Stages A–D (ACC/AHA) describe progression and only move forward.
Acute Coronary Syndrome
Unstable angina, NSTEMI and STEMI (2025 ACC/AHA ACS Guideline)
Unstable angina
Chest pain at rest, new, or worsening. Troponin normal. No ST elevation. Emergency: can progress to MI.
NSTEMI
Troponin elevated. No persistent ST elevation (may show ST depression or T-wave inversion).
STEMI
ST elevation in 2 contiguous leads + rising troponin. Complete blockage: time is muscle.
Recognize it
- Pressure, squeezing or heaviness in the chest; may spread to arm, jaw, neck, back; sweating, nausea, dyspnea.
- Women, older adults and people with diabetes often have atypical symptoms: fatigue, dyspnea, nausea, epigastric discomfort.
- 12-lead EKG within 10 minutes of arrival.
- High-sensitivity troponin at arrival and repeated (rises within hours; stays up 1–2 weeks).
Which leads, which artery
| Inferior | II, III, aVF | Right coronary |
| Anterior/septal | V1–V4 | Left anterior descending |
| Lateral | I, aVL, V5–V6 | Circumflex |
Inferior MI: get right-sided leads. A right ventricular infarct is preload-dependent: avoid nitrates and diuretics; give IV fluids for hypotension.
Immediate treatment
- Aspirin 162–325 mg chewed (non-enteric-coated), unless true allergy or active bleeding.
- Nitroglycerin 0.4 mg SL every 5 min, up to 3 doses, if systolic BP ≥90. Not with sildenafil/vardenafil in the last 24 h or tadalafil in 48 h, or RV infarct.
- Oxygen only if SpO₂ <90%. Updated
- Morphine only for pain not relieved by nitrates. Updated
- Second antiplatelet (P2Y12: ticagrelor, prasugrel, clopidogrel) + anticoagulant (heparin).
- High-intensity statin; beta blocker within 24 h if no HF, shock or bradycardia.
- STEMI → PCI: first medical contact-to-device ≤90 min (≤120 min if transferring). If PCI can't happen in time: fibrinolytic within 30 min of arrival.
After PCI (cardiac cath)
- Check site, distal pulses, color, temperature and sensation as per protocol (e.g., every 15 min at first).
- Radial: compression band, release per protocol; no BP or blood draws on that arm.
- Femoral: keep leg straight and HOB low as ordered. Back or flank pain + hypotension → retroperitoneal bleed: report now.
- Contrast: hydrate; watch urine output and creatinine.
Discharge teaching
- Dual antiplatelet therapy (usually 12 months): never stop without the cardiologist; bleeding precautions.
- Chest pain at home: stop, sit, take 1 SL nitroglycerin. If not better or worse after 5 min, call emergency services; may repeat every 5 min, max 3.
- Keep nitroglycerin in its original dark glass bottle; carry it always.
- Cardiac rehab; stop smoking; heart-healthy diet; sex is usually safe once able to climb 2 flights of stairs, as cleared.
Coronary Artery Disease and Cholesterol
Angina types, lipid targets and lipid-lowering drugs
Stable angina
Predictable chest pain with exertion or stress; relieved by rest or nitroglycerin within minutes.
Unstable angina
New, at rest, or worsening; not relieved by rest. Treat as ACS: emergency.
Variant (Prinzmetal)
Coronary vasospasm, often at rest/night. Treated with CCBs and nitrates; avoid triggers (smoking, cocaine).
Lipid values (adults)
| Lab | Desirable |
|---|---|
| Total cholesterol | <200 mg/dL |
| LDL ("bad") | <100 mg/dL (lower targets, e.g. <70 or <55, in people with heart disease) |
| HDL ("good") | Men ≥40 mg/dL; women ≥50 mg/dL |
| Triglycerides | <150 mg/dL |
Some guides reverse the HDL numbers by sex. It's women ≥50, men ≥40.
Risk factors
Can't change
- Age (men ≥45, women ≥55)
- Family history of early CAD
- Sex, genetics
Can change
- Smoking, high BP, high LDL
- Diabetes, obesity, inactivity
- Unhealthy diet, heavy alcohol use
- Chronic kidney disease
Lipid-lowering drugs
| Drug | Key points |
|---|---|
| Statins (atorvastatin, rosuvastatin, simvastatin) | First-line; lower LDL most. Report muscle pain, weakness, dark urine (myopathy, rhabdomyolysis: check CK). Baseline liver tests. Simvastatin and lovastatin are taken in the evening; atorvastatin and rosuvastatin any time. Avoid large amounts of grapefruit with simvastatin, lovastatin, atorvastatin. Usually stopped in pregnancy. |
| Ezetimibe | Blocks cholesterol absorption; added to a statin. |
| PCSK9 inhibitors (evolocumab, alirocumab), inclisiran | Injections for very high risk or statin intolerance; large LDL reductions. |
| Bempedoic acid | Oral option for statin intolerance; can raise uric acid (gout). |
| Bile acid sequestrants (cholestyramine) | Constipation; bind other drugs: give other meds 1 h before or 4–6 h after; may ↓ fat-soluble vitamins. |
Tests
- Stress test: avoid caffeine 12–24 h before; some meds (e.g. beta blockers) may be held as ordered.
- Cardiac cath: check allergies, kidney function, anticoagulants; metformin may be held around contrast if kidney function is poor.
- Lipid panel: fasting not always required; follow the lab's instructions.
LDL = Lousy: you want it Low.
Nystatin is an antifungal, not a statin.
Stroke: Time-Critical Care
Ischemic vs. hemorrhagic, thrombolytics, and nursing priorities
Recognize: BE FAST
| Balance | Sudden loss of balance or coordination |
| Eyes | Sudden vision loss or double vision |
| Face | Facial droop |
| Arm | Arm (or leg) weakness |
| Speech | Slurred or confused speech |
| Time | Note last known well; call emergency services |
First steps
- ABCs; check blood glucose (hypoglycemia mimics stroke).
- Non-contrast CT immediately: rules out bleeding before any clot-busting drug.
- NIH Stroke Scale; time of last known well.
- NPO until a swallow screen is passed (aspiration risk), including oral meds.
Ischemic stroke: reperfusion
IV thrombolytic within 4.5 hours of last known well (the standard window ends at 4.5 h; it does not start at 3 h). 2026 AHA/ASA: selected patients up to 9 h, or wake-up stroke, if advanced imaging shows salvageable brain. Updated
- Alteplase 0.9 mg/kg (max 90 mg): 10% as a bolus over 1 min, rest over 60 min; or
- Tenecteplase 0.25 mg/kg (max 25 mg) single IV bolus. Updated
Streptokinase and reteplase are not used for stroke.
Mechanical thrombectomy for large-vessel occlusion: up to 24 h in selected patients.
BP before thrombolytic: <185/110. Keep ≤180/105 for 24 h after.
Exclusions (examples): any bleeding on CT, active internal bleeding, recent major surgery, head trauma or stroke, BP that can't be lowered below 185/110, low platelets or anticoagulation (check labs/history).
After: neuro checks and VS every 15 min × 2 h, every 30 min × 6 h, hourly × 16 h; no antithrombotics for 24 h; avoid invasive procedures. New headache, worse neuro status, nausea/vomiting, or sudden BP rise → stop the infusion, call, urgent CT.
Hemorrhagic stroke
- Usually sudden severe headache ("worst of my life"), vomiting, ↓ LOC.
- Lower systolic BP (commonly to ~140); reverse anticoagulants.
- ICP care: HOB 30°, head midline, avoid straining, coughing and hip flexion; seizure precautions.
- No thrombolytics, antiplatelets or anticoagulants.
Right vs. left hemisphere
Right brain (left-side weakness)
- Impulsive, poor judgment, safety risk
- Left-sided neglect; spatial problems
- Denies deficits
Left brain (right-side weakness)
- Aphasia (speech, language)
- Slow, cautious, anxious
- Aware of deficits; may be depressed
Rehab nursing
- Homonymous hemianopia: place food and items in the intact visual field; teach head-turning to scan the blind side.
- Dysphagia: upright 90°, chin tuck, thickened liquids as ordered by IDDSI level.
- Approach and speak from the unaffected side early on; encourage use of the affected side over time.
Arterial Blood Gases
Interpret any ABG in four steps
Normal values
| pH | 7.35–7.45 | <7.35 acidosis · >7.45 alkalosis |
| PaCO₂ | 35–45 mmHg | Lungs. CO₂ acts as an acid |
| HCO₃⁻ | 22–26 mEq/L | Kidneys. Bicarbonate is a base |
| PaO₂ | 80–100 mmHg | <80 = hypoxemia |
| SaO₂ | 95–100% | Hemoglobin saturation |
Four steps
- pH: acidosis or alkalosis? (If normal, which side of 7.40 is it on?)
- PaCO₂: does it match the pH problem? If yes → respiratory.
- HCO₃⁻: does it match the pH problem? If yes → metabolic.
- Compensation: is the other value moving the opposite way?
| Uncompensated | pH abnormal; other value normal |
| Partially compensated | pH abnormal; both values abnormal |
| Fully compensated | pH normal (7.35–7.45); both values abnormal |
Causes and clues
| Imbalance | Common causes | Clues |
|---|---|---|
| Respiratory acidosis | Hypoventilation: COPD, opioid/sedative overdose, neuromuscular weakness, airway obstruction, severe asthma (tiring) | Drowsy, confused, headache; slow or shallow breathing |
| Respiratory alkalosis | Hyperventilation: anxiety, pain, fever, early sepsis, early PE, high altitude, ventilator rate too high | Light-headed, tingling around mouth and fingers |
| Metabolic acidosis | DKA, lactic acidosis (shock, sepsis), kidney failure, severe diarrhea, salicylate toxicity | Kussmaul breathing (deep, rapid), hyperkalemia |
| Metabolic alkalosis | Vomiting, NG suction, loop/thiazide diuretics, too much antacid or bicarbonate, hypokalemia | Slow shallow breathing, muscle twitching, hypokalemia |
Practice (cover the answers)
| pH 7.30 · CO₂ 55 · HCO₃ 24 | Uncompensated respiratory acidosis |
| pH 7.48 · CO₂ 30 · HCO₃ 23 | Uncompensated respiratory alkalosis |
| pH 7.28 · CO₂ 30 · HCO₃ 14 | Partially compensated metabolic acidosis |
| pH 7.37 · CO₂ 58 · HCO₃ 32 | Fully compensated respiratory acidosis |
| pH 7.52 · CO₂ 44 · HCO₃ 34 | Uncompensated metabolic alkalosis |
Oxygen targets
- Most acutely ill adults: SpO₂ 92–96%.
- At risk of CO₂ retention (COPD, obesity hypoventilation): 88–92%.
- Pulse oximeters can over-read in darker skin, and read falsely normal in carbon monoxide poisoning. Check an ABG when it matters.
- Anion gap = Na⁺ − (Cl⁻ + HCO₃⁻); normal ~8–12. High gap → DKA, lactate, kidney failure, toxins.
Oxygen Delivery and Airway Care
Devices, safety, and spotting hypoxia early
Oxygen devices
| Device | Flow | Approx. FiO₂ | Key points |
|---|---|---|---|
| Nasal cannula | 1–6 L/min | 24–44% | Each L/min adds ~4%. Check ears and nares for pressure injury. |
| Simple face mask | 5–10 L/min | 35–55% | Minimum 5 L/min to flush out exhaled CO₂. |
| Non-rebreather mask | 10–15 L/min | 60–80%+ | Reservoir bag must stay inflated; one-way valves. Short-term, high need. |
| Venturi mask | Per adaptor | 24–60% | Most precise FiO₂: useful in COPD. |
| High-flow nasal cannula | up to 60 L/min | 21–100% | Heated, humidified; reduces work of breathing. |
| CPAP / BiPAP | Pressure-set | Set | BiPAP for hypercapnic COPD exacerbation; CPAP for sleep apnea and pulmonary edema. Patient must be alert and able to protect the airway. |
Signs of hypoxia
Early
- Restlessness, anxiety
- Tachycardia, tachypnea
- Confusion, irritability
- Rising BP
Late
- Cyanosis
- Bradycardia, hypotension
- Dysrhythmias
- Lethargy, coma
A newly restless or confused patient: check oxygenation before giving a sedative.
Oxygen safety
- No smoking, candles, or open flames; post "oxygen in use".
- Secure cylinders upright in a stand or cart.
- Water-based lubricant only on lips and nares (no petroleum jelly).
- Avoid prolonged high FiO₂ (oxygen toxicity); give the lowest FiO₂ that meets the target.
Incentive spirometer
- Sit upright; exhale normally.
- Seal lips around the mouthpiece.
- Inhale slowly and deeply to raise the piston.
- Hold the breath 3–5 seconds, then exhale.
- Repeat 10 times every hour while awake; cough afterwards (splint incisions).
Suctioning (adult)
- Suction only when needed (secretions heard or seen, ↓ SpO₂, ↑ airway pressure).
- Pre-oxygenate; sterile technique for artificial airways.
- Wall pressure ~100–150 mmHg; apply suction only while withdrawing.
- Each pass ≤10–15 seconds; limit passes; reoxygenate between.
- Stop for bradycardia, dysrhythmia or desaturation.
Tracheostomy
- Keep a spare trach (same size and one smaller) and obturator at the bedside.
- Humidify; trach care and dressing changes per policy; clean inner cannula.
- Accidental dislodgement (fresh trach <7 days): call for help, oxygenate by face/stoma; don't blindly reinsert a fresh trach unless trained.
COPD
GOLD 2025: chronic airflow limitation that is not fully reversible
Two patterns
Emphysema
- Alveolar walls destroyed; air trapping
- Barrel chest, thin, pursed-lip breathing
- Hyperresonance; diminished breath sounds
Chronic bronchitis
- Productive cough ≥3 months for 2 years in a row
- Frequent infections, hypoxemia, edema
- Rhonchi, wheezes; possible cor pulmonale
Diagnosis: spirometry after bronchodilator: FEV₁/FVC <0.70. Main cause: smoking (also biomass smoke from cooking fuels, occupational dusts, alpha-1 antitrypsin deficiency).
Oxygen in COPD Updated
Target SpO₂ 88–92% in people at risk of CO₂ retention.
Why: too much oxygen worsens ventilation–perfusion mismatch and reduces hemoglobin's CO₂ carrying (Haldane effect), so CO₂ rises. The old "hypoxic drive" explanation is outdated.
Never withhold oxygen from a hypoxic patient. Titrate to the target and watch for drowsiness (rising CO₂).
Long-term home O₂ if resting PaO₂ ≤55 mmHg or SpO₂ ≤88%.
Medications
| Drug group | Examples | Role |
|---|---|---|
| LAMA + LABA | tiotropium, umeclidinium + salmeterol, formoterol, vilanterol | Mainstay maintenance for most patients |
| Inhaled corticosteroid (added) | fluticasone, budesonide | Only with long-acting bronchodilators, if exacerbations and blood eosinophils ≥300 (or ≥100 with frequent exacerbations). ↑ pneumonia risk. |
| SABA / SAMA | albuterol; ipratropium | Rescue for symptoms |
| Add-ons | Exacerbations: roflumilast; azithromycin (selected); dupilumab (eosinophils ≥300) or mepolizumab (≥150) despite triple therapy. Persistent symptoms: ensifentrine (nebulized) | Newer options New |
Acute exacerbation
- SABA ± ipratropium (nebulizer or MDI with spacer).
- Systemic corticosteroid (e.g., prednisone 40 mg daily for 5 days).
- Antibiotics if sputum becomes purulent or ventilation is needed.
- Controlled oxygen 88–92%; ABG.
- BiPAP for hypercapnic respiratory acidosis (pH ≤7.35, PaCO₂ >45).
Nursing and teaching
- Smoking cessation: the single most effective intervention.
- Pursed-lip breathing (in through nose, out slowly through pursed lips, exhale twice as long); huff coughing.
- Upright or tripod position; pace activities; pulmonary rehab.
- High-calorie, high-protein small frequent meals; rest before eating.
- Fluids ~2–3 L/day to thin secretions unless restricted (e.g., HF).
- Vaccines: influenza yearly, COVID-19, pneumococcal, RSV, Tdap, zoster.
Asthma
GINA 2025: chronic airway inflammation with variable, reversible obstruction
Recognize
- Wheeze, cough (often at night or early morning), chest tightness, dyspnea.
- Triggers: allergens, smoke, cold air, exercise, viral infections, aspirin/NSAIDs in some, beta blockers, stress.
Danger signs of a severe attack
- Can't speak in full sentences; accessory muscle use; SpO₂ <90%.
- "Silent chest": little air movement, so wheezing disappears.
- Drowsy or confused; normal or rising PaCO₂ = tiring out.
Peak flow zones
| Green ≥80% | of personal best: continue usual plan |
| Yellow 50–79% | use reliever; follow action plan; contact provider |
| Red <50% | use reliever now; seek emergency care |
Measure: stand, full breath, seal lips, blow hard and fast; best of 3.
Long-term treatment (adults and adolescents ≥12) Updated
Preferred (GINA Track 1): the reliever is low-dose ICS-formoterol (budesonide-formoterol) taken as needed.
- Mild asthma: as-needed ICS-formoterol only.
- Moderate to severe: maintenance-and-reliever therapy (MART): the same ICS-formoterol inhaler every day and as needed.
SABA alone (albuterol only) is no longer recommended: it treats symptoms but not inflammation and increases the risk of severe attacks and death.
If albuterol is the reliever (Track 2), take an inhaled corticosteroid too, every time or daily.
Add-ons: LAMA, montelukast (boxed warning: mood and behavior changes), biologics (omalizumab, mepolizumab, benralizumab, dupilumab, tezepelumab).
Acute exacerbation
- SABA (albuterol) repeated, e.g., every 20 min in the first hour; add ipratropium if severe.
- Systemic corticosteroid early (oral prednisone or IV).
- Oxygen to SpO₂ 93–95% adults (94–98% children).
- IV magnesium sulfate for severe attacks not responding.
- No sedatives. Prepare for intubation if tiring.
Inhaler technique
- MDI: shake; breathe out; seal lips (spacer preferred); press once and breathe in slowly over 3–5 s; hold ~10 s; wait 30–60 s between puffs.
- Dry powder inhaler: don't shake; don't breathe into it; breathe in fast and deep.
- Rinse mouth and spit after a steroid inhaler (prevents thrush).
- Two inhalers: bronchodilator first, then the steroid.
Pneumonia and Tuberculosis
Infection, precautions, and prevention
CAP
Community-acquired: starts outside hospital or within 48 h of admission.
HAP
Hospital-acquired: starts ≥48 h after admission.
VAP
Ventilator-associated: starts ≥48 h after intubation.
"HCAP" (healthcare-associated pneumonia) was dropped from US guidelines in 2019. Updated
Assessment
- Fever, chills, productive cough, pleuritic chest pain, dyspnea, tachypnea.
- Crackles; bronchial breath sounds, dullness and ↑ tactile fremitus over consolidation.
- Older adults: may present with confusion, falls, no fever.
- Chest X-ray; sputum and blood cultures before antibiotics (don't delay antibiotics in sepsis).
- CURB-65 severity: Confusion, Urea (BUN >19 mg/dL), RR ≥30, BP <90 systolic or ≤60 diastolic, age ≥65.
Care and prevention
- Antibiotics on time; oxygen to target; fluids unless restricted.
- HOB ≥30°; turn, cough, deep breathe; incentive spirometer; early mobility.
- Aspiration precautions: swallow screen, sit at 90° to eat, chin tuck, oral care.
- Vaccines: pneumococcal (PCV20 or PCV21, or PCV15 + PPSV23) for all adults ≥50 and younger adults with risk conditions; yearly influenza; COVID-19; RSV for older or high-risk adults. Updated
Tuberculosis (TB)
- S&S: cough >3 weeks, hemoptysis, night sweats, weight loss, low-grade afternoon fever, fatigue.
- Screening: TST (skin test) or IGRA blood test. Positive = infection, not proof of active disease. TST read in 48–72 h; ≥5, ≥10 or ≥15 mm is positive depending on risk group.
- Active disease: chest X-ray + 3 sputum samples for AFB smear, NAAT and culture (at least one early morning). Culture confirms.
- Airborne precautions: negative-pressure room, fit-tested N95; patient wears a surgical mask when outside the room.
- Standard treatment: RIPE (rifampin, isoniazid, pyrazinamide, ethambutol) for 2 months, then rifampin + isoniazid for 4 months (6 months total). A 4-month regimen is an option for some.
- Directly observed therapy (DOT) improves adherence.
- Usually non-infectious after ~2 weeks of effective treatment, clinical improvement, and negative sputum smears (per policy).
Mechanical Ventilation
Lung-protective settings, alarms, and preventing VAP
Settings to know Updated
- Tidal volume 6–8 mL/kg of predicted (ideal) body weight, calculated from height. ~6 mL/kg in ARDS. Old fixed volumes like "500–800 mL" over-stretch the lungs.
- Plateau pressure ≤30 cmH₂O.
- PEEP keeps alveoli open; can ↓ BP (less venous return).
- Lowest FiO₂ that meets the SpO₂ target.
- Modes: assist-control (full support), SIMV, pressure support (weaning).
Endotracheal tube
- Confirm placement: waveform capnography (most reliable) + bilateral breath sounds and chest rise + chest X-ray.
- Note the cm mark at the teeth or lips each shift.
- Cuff pressure 20–30 cmH₂O.
- Secure the tube; restraints only if needed and ordered.
Ventilator alarms
| Alarm | Common causes | Action |
|---|---|---|
| High pressure | Secretions, coughing, biting the tube, kinked tubing, water in tubing, bronchospasm, pneumothorax | Suction, bite block, straighten or drain tubing, assess breath sounds, notify |
| Low pressure / low volume | Disconnection (most common), cuff leak, tube displaced, circuit leak | Check connections from patient to vent; check cuff and tube position |
| Apnea | Patient not triggering breaths (over-sedation) | Assess; check mode and sedation |
If you can't find and fix the cause right away: disconnect and ventilate with a bag-valve device on 100% O₂, and call for help.
VAP prevention bundle
- HOB 30–45° unless contraindicated.
- Daily sedation interruption + spontaneous breathing trial.
- Oral care with toothbrushing. Updated Routine chlorhexidine mouthwash is no longer recommended (SHEA 2022).
- Subglottic suction tubes for longer ventilation; drain tubing condensate away from the patient.
- Early mobility; DVT and stress-ulcer prophylaxis as indicated.
Complications
- VAP; barotrauma or pneumothorax (sudden high pressures, absent breath sounds, ↓ SpO₂).
- Hypotension from positive pressure.
- Stress ulcers, DVT, muscle weakness, pressure injury at lips.
- Delirium: screen daily.
After extubation
High Fowler's, oxygen, cough and deep breathe; watch for stridor (airway edema: report now); swallow assessment before eating.
Chest Tubes and Pneumothorax
How the drainage system works and what to do when something goes wrong
Collection chamber
Holds drainage. Mark the level and time each shift (or as ordered).
Report >100 mL/hour (or per order) or bright red drainage.
Water seal
One-way valve (~2 cm water). Tidaling (rise and fall with breathing) is normal.
Continuous bubbling = air leak. Intermittent bubbling on exhale/cough can be expected with a pneumothorax.
Suction control
Wet: gentle continuous bubbling (vigorous bubbling only evaporates water). Dry: dial set (often −20 cmH₂O) with the indicator showing.
Do
- Keep the unit upright and below chest level.
- Keep tubing free of kinks and dependent loops.
- Check dressing, insertion site, crepitus (subcutaneous air), breath sounds, SpO₂.
- Keep at bedside: sterile water and an occlusive dressing (and clamps if policy).
- Encourage coughing, deep breathing, incentive spirometry, pain control.
Don't
- Don't clamp routinely (risk of tension pneumothorax): only briefly to find a leak, to change the unit, or if ordered.
- Don't strip or milk the tubing routinely.
- Don't lift the unit above the chest.
Tidaling stopped?
Either the lung has re-expanded (good: confirm with X-ray), or the tube is kinked, clotted or blocked (check).
Emergencies
| Problem | Action |
|---|---|
| Tubing disconnected from the unit | Put the tube end 2–4 cm under sterile water, then reconnect or replace the unit. |
| Tube pulled out of the chest | Cover the site with a sterile occlusive dressing (taped on 3 sides if there's an air leak, per policy); stay with the patient; notify; watch for tension pneumothorax. |
| Unit knocked over | Set it upright; check the water seal level; notify if drainage mixed between chambers. |
Pneumothorax types
- Spontaneous: tall thin young adults, smokers, lung disease.
- Open (sucking chest wound): cover with a vented or 3-sided occlusive dressing.
- Tension: air trapped with each breath → shift of the mediastinum. Tracheal deviation away from the affected side, absent breath sounds, JVD, hypotension, severe distress. Emergency: needle decompression, then chest tube.
- Hemothorax: blood in the pleural space.
Removal: patient holds breath or performs Valsalva as instructed; occlusive dressing; chest X-ray after.
Pulmonary Embolism and DVT
Venous thromboembolism: prevent it, recognize it, act fast
Virchow's triad
- Stasis: immobility, long travel, HF, A-fib.
- Vessel injury: surgery (especially hip/knee), trauma, central lines.
- Hypercoagulability: cancer, pregnancy and postpartum, estrogen (pills, HRT), smoking, obesity, inherited clotting disorders, previous VTE.
DVT signs
- One-sided calf or thigh swelling, pain, warmth, redness.
- Diagnose with compression ultrasound.
- Homans' sign is unreliable: don't rely on it.
- Never massage a leg with a suspected clot.
Pulmonary embolism
Signs
- Sudden dyspnea and tachypnea (most common).
- Pleuritic chest pain, tachycardia, anxiety or sense of doom.
- Cough, hemoptysis, hypoxemia, low-grade fever.
- Massive PE: hypotension, syncope, JVD, cardiac arrest (PEA).
Tests
- CT pulmonary angiography; V/Q scan if contrast can't be used.
- D-dimer: a normal result helps rule PE out when risk is low; a high result is non-specific.
- ABG: hypoxemia with respiratory alkalosis early. EKG: often sinus tachycardia.
Nursing actions if PE is suspected
- Stay with the patient; call for help (rapid response).
- Raise the head of bed; give oxygen.
- Vital signs, SpO₂, IV access; prepare for tests.
Treatment
- Anticoagulation: heparin or LMWH, or a DOAC (apixaban, rivaroxaban) from the start.
- Thrombolytic for massive PE with hypotension (if no contraindication).
- Catheter-directed treatment or surgical embolectomy in selected cases.
- IVC filter only if anticoagulation isn't possible.
Prevention
- Early ambulation; ankle pumps and leg exercises.
- Sequential compression devices (not on a leg with a known clot).
- Pharmacologic prophylaxis: enoxaparin or SC heparin as ordered.
- Hydration; avoid crossing legs, pillows under knees, tight garments.
Prenatal Care and Nutrition
Dating, visits, labs, supplements and warning signs
Dating the pregnancy
- Naegele's rule: first day of last menstrual period + 7 days − 3 months + 1 year.
- Early ultrasound (crown–rump length) is the most accurate dating.
- Fundal height: 12 wk at the symphysis; ~20 wk at the umbilicus; from 20–36 wk, height in cm ≈ weeks (±2 cm).
- Preterm <37 0/7 wk · early term 37 0/7–38 6/7 · full term 39 0/7–40 6/7 · late term 41 0/7–41 6/7 · post-term ≥42 0/7.
GTPAL
Gravida (pregnancies) · Term births · Preterm births · Abortions/miscarriages (<20 wk) · Living children. Twins count as one pregnancy and one birth.
Supplements and diet
| Folic acid | 400 mcg (0.4 mg) daily, starting ≥1 month before conception; 4 mg after a previous neural tube defect |
| Iron | 27 mg/day (prenatal vitamin); more if anemic |
| DHA (omega-3) | 200–300 mg/day (milligrams, not micrograms) or 2–3 servings of low-mercury fish/week |
| Calcium | 1,000 mg/day (1,300 mg for teens) |
| Calories | No extra in 1st trimester; ~+340/day 2nd; ~+450/day 3rd |
Avoid: alcohol (no safe amount), smoking, unpasteurized dairy and deli meats (Listeria), raw meat and cat litter (toxoplasmosis), high-mercury fish (shark, swordfish, king mackerel, tilefish, bigeye tuna, marlin); caffeine <200 mg/day.
Typical prenatal timeline
| When | What |
|---|---|
| First visit | Blood type, Rh and antibody screen, CBC, rubella and varicella immunity, HIV, syphilis, hepatitis B and C, urine culture, Pap/HPV if due; offer genetic screening |
| 10–14 weeks | Cell-free DNA (from 10 wk) and/or nuchal translucency screening (offered) |
| 15–22 weeks | Maternal serum AFP (neural tube defects); anatomy ultrasound ~18–22 wk |
| 24–28 weeks | Glucose screen for gestational diabetes; CBC; antibody screen if Rh-negative |
| 28 weeks | Rh immune globulin if Rh-negative and unsensitized |
| 27–36 weeks | Tdap every pregnancy (ideally early in this window); RSV vaccine at 32–36 wk during September–January (or infant antibody after birth) |
| 36 0/7–37 6/7 weeks | Group B strep vaginal–rectal culture |
Influenza and COVID-19 vaccines can be given in any trimester. Live vaccines (MMR, varicella) are not given in pregnancy. Visit frequency: every 4 weeks to 28 wk, every 2 weeks to 36 wk, then weekly.
Normal changes
- Blood volume ↑ 40–50% → physiologic anemia (Hgb <11 g/dL in 1st/3rd trimester or <10.5 in 2nd is anemia).
- HR ↑ 10–15/min; BP dips in 2nd trimester.
- Supine hypotension: uterus compresses the vena cava → place on her left side (or wedge under right hip).
- hCG maintains the corpus luteum (and progesterone) early in pregnancy. It's the hormone pregnancy tests detect. It does not feed the fetus.
Hypertensive Disorders of Pregnancy
Gestational hypertension, preeclampsia, eclampsia and HELLP
Definitions
| Chronic HTN | BP ≥140/90 before pregnancy or before 20 weeks |
| Gestational HTN | New BP ≥140/90 after 20 weeks, no proteinuria or severe features |
| Preeclampsia | New BP ≥140/90 after 20 wk (two readings ≥4 h apart) plus proteinuria (≥300 mg/24 h or protein/creatinine ≥0.3) or a severe feature |
| Eclampsia | New seizure in preeclampsia |
| HELLP | Hemolysis, Elevated Liver enzymes, Low Platelets |
Severe features
- BP ≥160 systolic or ≥110 diastolic
- Platelets <100,000/µL
- Liver enzymes ≥2× normal; severe RUQ or epigastric pain
- Creatinine >1.1 mg/dL or doubled
- Pulmonary edema
- New headache not relieved by medication; visual disturbances
Can start or worsen after birth (up to 6 weeks, mostly in the first week): teach warning signs at discharge.
Prevention: low-dose aspirin Must know
Aspirin 81 mg daily, started at 12–28 weeks (ideally before 16) and continued until delivery, for people at high risk:
- High risk (any one): previous preeclampsia, twins/multiples, chronic HTN, diabetes, kidney disease, lupus or antiphospholipid syndrome.
- Moderate risk (more than one): first pregnancy, BMI >30, family history, age ≥35, IVF, low income, Black race (reflecting racism-related risk), >10 years since last pregnancy.
Severe-range BP: treat within 30–60 min
If BP stays ≥160 systolic or ≥110 diastolic for 15 min:
- Labetalol IV (avoid in asthma, heart block)
- Hydralazine IV
- Nifedipine immediate-release oral
Goal: lower to ~140–150/90–100, not to normal (protect placental blood flow). Delivery is the cure; betamethasone if birth is likely before 34 weeks.
Magnesium sulfate: prevents seizures (it is not an antihypertensive)
- Loading 4–6 g IV over 15–30 min, then 1–2 g/hour by infusion pump on a secondary line.
- Usually continued 24 hours after birth.
- Therapeutic level ~4–7 mEq/L (4.8–8.4 mg/dL).
- Check hourly: deep tendon reflexes, respirations, urine output, LOC, SpO₂, lung sounds. Magnesium is cleared by the kidneys.
- Expected: flushing, warmth, drowsiness. It can also slow labor and cause newborn drowsiness and low tone.
Stop the infusion, call the provider, and give the antidote: calcium gluconate 1 g IV (10 mL of 10%) slowly over ~3 min.
Eclamptic seizure
- Call for help; stay; note the time.
- Turn on her side; protect from injury. Don't restrain; nothing in the mouth.
- After: airway, suction, oxygen; magnesium sulfate as ordered.
- Assess the fetus (expect bradycardia during the seizure) and watch for abruption.
HELLP
RUQ or epigastric pain, nausea, vomiting, malaise. It can occur with normal-looking BP. Labs: hemolysis (↑ LDH, ↑ bilirubin), ↑ AST/ALT, platelets <100,000. Risks: liver rupture, DIC, abruption. Treatment: stabilize, magnesium, deliver.
Labor and Birth
Stages, cervical change, induction, and labor emergencies
Stages of labor
| Stage | From → to | Key points |
|---|---|---|
| 1st: latent phase | Onset → 6 cm | Slower, irregular progress; rest, hydrate, walk |
| 1st: active phase | 6 cm → 10 cm | Faster dilation; stronger, regular contractions; transition (8–10 cm): nausea, shaking, urge to push |
| 2nd | 10 cm → birth of baby | Pushing; monitor FHR more often |
| 3rd | Birth → delivery of placenta | Usually <30 min. Separation signs: gush of blood, cord lengthens, uterus rises and becomes globular |
| 4th | First 1–2 h after placenta | Recovery: VS and fundus every 15 min in the first hour; highest risk of hemorrhage |
Cervix and fetal position
- Dilation 0–10 cm; effacement 0–100% (thinning).
- Station: −5 to +5; 0 = at the ischial spines (engaged).
- Most common position: LOA (left occiput anterior). Posterior (OP) → back labor.
- Contraction frequency = start of one to start of the next; duration = start to end of one.
- Tachysystole: >5 contractions in 10 min, averaged over 30 min.
True vs. false labor
| True | False |
|---|---|
| Regular, closer together, stronger | Irregular, no pattern |
| Continues with walking or rest | Eases with rest, fluids, position change |
| Back pain moving to the front | Felt in front/abdomen |
| Cervix changes | No cervical change |
Rupture of membranes
- Check the FHR right away after rupture (cord prolapse risk).
- Note fluid COAT: Color (clear normal; green = meconium), Odor (foul = infection), Amount, Time.
- Nitrazine paper turns blue (alkaline amniotic fluid); ferning under the microscope.
- Rupture >18 h → infection risk: monitor temperature.
Induction and augmentation
- Bishop score ≥8 = favorable cervix. Lower → cervical ripening first.
- Misoprostol (PGE1) or dinoprostone (PGE2), or a balloon catheter. No misoprostol with a previous cesarean or uterine scar (rupture risk). Start oxytocin ≥4 h after the last misoprostol dose.
- Oxytocin (high-alert): infusion pump, piggybacked into the main line at the port closest to the patient. Titrate per protocol. Stop it for tachysystole with an abnormal FHR or a Category III tracing. Watch for water intoxication (headache, confusion, ↓ urine).
Preterm labor (<37 weeks)
- Tocolytics delay birth ~48 h to allow steroids and transfer: nifedipine; indomethacin (<32 wk, ≤48 h); terbutaline (short-term only: boxed warning against prolonged or oral use).
- Betamethasone 12 mg IM × 2 doses 24 h apart (24 0/7–33 6/7 wk; considered from 22 wk and in selected late-preterm cases) for fetal lung maturity.
- Magnesium sulfate before 32 wk for fetal neuroprotection.
Shoulder dystocia: McRoberts (thighs to abdomen) + suprapubic pressure. Never fundal pressure.
Epidural hypotension: side-lying, IV fluid bolus, vasopressor as ordered; check the bladder.
Fetal Heart Rate Monitoring
NICHD definitions, categories and intrauterine resuscitation
Baseline and variability
| Baseline | 110–160 bpm (average over 10 min) |
| Tachycardia | >160 for ≥10 min: maternal fever or infection, maternal tachycardia, terbutaline, fetal hypoxia, anemia |
| Bradycardia | <110 for ≥10 min: hypoxia, cord prolapse, maternal hypotension, uterine rupture, beta blockers |
| Variability | Absent (undetectable) · minimal (≤5) · moderate (6–25) = reassuring · marked (>25) |
Minimal variability can be fetal sleep (up to ~40 min), opioids or magnesium, or hypoxia.
Accelerations
A good sign: the fetus is well-oxygenated (not acidotic).
- ≥32 weeks: rise ≥15 bpm lasting ≥15 sec.
- <32 weeks: rise ≥10 bpm lasting ≥10 sec.
Sinusoidal pattern
Smooth, wave-like, no variability: severe fetal anemia (e.g., Rh disease, fetal bleeding). Category III.
Decelerations
| Type | Looks like | Cause | Action |
|---|---|---|---|
| Early | Gradual; mirrors the contraction (lowest point at the peak) | Head compression | None: normal |
| Variable | Abrupt drop and return; V, U or W shape; any timing | Cord compression | Reposition; if recurrent: stop oxytocin, check for prolapse, amnioinfusion if ordered |
| Late | Gradual; the lowest point comes after the peak of the contraction, and it recovers after the contraction ends | Uteroplacental insufficiency | Intrauterine resuscitation (below); notify |
| Prolonged | Drop ≥15 bpm lasting 2–10 min | Many (cord, hypotension, tachysystole) | Resuscitation; notify; prepare for birth |
| Variable | Cord compression |
| Early | Head compression |
| Accelerations | OK (oxygenated) |
| Late | Placental insufficiency |
Three categories
- Category I (normal): baseline 110–160, moderate variability, no late or variable decels (early decels and accels may be present).
- Category II (indeterminate): everything that is not I or III. Evaluate, resuscitate, re-evaluate.
- Category III (abnormal): absent variability with recurrent lates, recurrent variables, or bradycardia; or sinusoidal. Prepare for rapid delivery.
Intrauterine resuscitation (late decels, recurrent variables, Category II–III)
- Stop oxytocin.
- Reposition (left or right lateral, hands-and-knees).
- IV fluid bolus; correct maternal hypotension (epidural).
- Treat tachysystole (terbutaline if ordered).
- Vaginal exam if cord prolapse possible.
- Notify the provider; document actions and response.
- Prepare for expedited birth if it doesn't resolve.
- Oxygen: give for maternal hypoxia. Updated Routine high-flow O₂ by non-rebreather for fetal benefit is not supported by current evidence.
Postpartum Hemorrhage
The leading preventable cause of maternal death worldwide
Definition (ACOG)
Cumulative blood loss ≥1,000 mL, or blood loss with signs of hypovolemia, within 24 h of birth, by any route of delivery.
- Primary: first 24 h. Secondary: 24 h to 12 weeks.
- Measure, don't guess: quantitative blood loss (weigh pads: 1 g ≈ 1 mL).
- Vital signs change late in young healthy patients. A shock index (HR ÷ systolic BP) >0.9 is an early warning.
Causes: the 4 Ts
| Tone | Uterine atony (most common): overdistended uterus (twins, big baby, polyhydramnios), long labor, oxytocin, infection, magnesium |
| Trauma | Lacerations, hematoma, uterine inversion or rupture. Bleeding with a firm uterus → think trauma |
| Tissue | Retained placenta or clots; placenta accreta |
| Thrombin | Clotting disorders, DIC (abruption, preeclampsia/HELLP, sepsis) |
First actions
- Fundal massage (support the lower uterus above the pubic bone with the other hand).
- Call for help; activate the hemorrhage protocol.
- Empty the bladder (a full bladder pushes the uterus up and to the right).
- Two large-bore IVs; fluids; oxygen; legs raised.
- Labs: CBC, type and crossmatch, coagulation, fibrinogen.
- Uterotonics and TXA as ordered; keep counting blood loss.
Tranexamic acid (TXA) Must know
1 g IV over 10 min, as soon as possible and within 3 hours of birth, given alongside uterotonics. A second 1 g dose if bleeding continues after 30 min or restarts within 24 h.
Reduces death from bleeding (WOMAN trial; endorsed by ACOG). Less effective the later it's given.
Uterotonic drugs
| Drug | Usual dose | Watch for / avoid |
|---|---|---|
| Oxytocin | IV infusion (10–40 units in 500–1,000 mL) or 10 units IM | First-line. Never undiluted IV push (hypotension) |
| Methylergonovine | 0.2 mg IM every 2–4 h | Avoid in hypertension or preeclampsia (vasoconstriction). Refrigerate |
| Carboprost | 250 mcg IM every 15–90 min (max 8 doses) | Avoid in asthma (bronchospasm). Diarrhea, fever. Refrigerate |
| Misoprostol | 600–1,000 mcg oral, sublingual or rectal | Fever, shivering; diarrhea |
If bleeding continues
Uterine balloon tamponade, uterine artery embolization, compression sutures, hysterectomy. Massive transfusion protocol (red cells, plasma, platelets, fibrinogen/cryo).
Hematoma
Severe perineal or rectal pain and pressure, swelling, signs of blood loss with little visible bleeding.
Saturating a pad in ≤1 hour, or clots larger than an egg, is excessive bleeding.
Postpartum Care
Assessment, breastfeeding, mastitis and mood
Systematic check: BUBBLE-LE
| Breasts | Soft, filling, engorged; nipple trauma |
| Uterus | Firm, midline; height vs. umbilicus |
| Bladder | Voiding; distension; displaced fundus |
| Bowel | Bowel sounds, flatus, constipation |
| Lochia | Color, amount, clots, odor |
| Episiotomy/incision | REEDA: redness, edema, ecchymosis, discharge, approximation |
| Legs | Calf pain, swelling (VTE) |
| Emotions | Bonding, mood, support |
Uterus and lochia
- Rises to about the umbilicus within 12 h, then descends ~1 cm (1 fingerbreadth) per day; not palpable abdominally by ~2 weeks.
- Boggy → massage. Up and to the right → full bladder: help her void.
| Rubra | Days 1–3 | Dark red, small clots |
| Serosa | Days 4–10 | Pink-brown |
| Alba | Day 10 to ~6 wk | Yellow-white |
Foul odor → infection. Temp up to 100.4°F (38°C) in the first 24 h is often dehydration; above that after 24 h → look for infection.
Breastfeeding
- Feed on demand, 8–12 times in 24 h.
- Good latch: wide open mouth, lips flanged out, much of the areola in the mouth, audible swallowing, no ongoing pain.
- Enough milk: by day 5+, ≥6 wet diapers and 3–4 yellow stools a day; weight regained by 10–14 days.
- Engorgement: feed often, cold packs after feeds, supportive bra.
Mastitis (ABM 2022) Updated
- Keep feeding normally on demand. It's safe for the baby to feed from the affected breast.
- Don't over-pump to "empty" the breast: that increases milk production and swelling.
- Ice or cold packs, ibuprofen and/or acetaminophen; supportive bra.
- Avoid heat and deep massage; very gentle lymphatic drainage strokes only.
- Antibiotics (e.g., cephalexin or dicloxacillin) if not improving in 12–24 h or systemically unwell; a lump that doesn't resolve → ultrasound for abscess.
Mood after birth
| Baby blues | Up to ~80%. Tearful, mood swings in the first days; gone by ~2 weeks. Reassure, rest, support. |
| Postpartum depression | Lasts >2 weeks and affects functioning. Screen (e.g., Edinburgh scale). Therapy; SSRIs (sertraline is compatible with breastfeeding); zuranolone (oral, 14 days). New |
| Postpartum psychosis | Emergency. Hallucinations, delusions, confusion, risk to self or baby. Don't leave her alone with the baby. |
Before discharge
- Rh immune globulin within 72 h if she is Rh-negative and the baby is Rh-positive.
- MMR if not rubella-immune (avoid pregnancy for 1 month; breastfeeding is fine); Tdap if not given.
- Contraception: progestin-only methods can start anytime; combined estrogen methods not before 3 weeks (later if breastfeeding or VTE risk).
- Warning signs: chest pain or SOB, seizure, thoughts of harming self or baby, soaking a pad in an hour, red swollen leg, temp ≥100.4°F (38°C), severe headache or vision change.
Gestational Diabetes and Pregnancy Bleeding
Screening and management; bleeding in the first and second half
Gestational diabetes: screening at 24–28 weeks
Earlier testing if high risk. Two accepted approaches:
| One-step | 75 g 2-hour OGTT (fasting). Positive if any: fasting ≥92, 1 h ≥180, 2 h ≥153 mg/dL |
| Two-step | 50 g 1-hour screen (no fasting); if ≥130–140 → 100 g 3-hour OGTT. Diagnosis needs ≥2 abnormal values |
An abnormal 1-hour screen is not a diagnosis: it leads to the 3-hour test.
Management
- Targets: fasting <95; 1 h after meals <140; 2 h <120 mg/dL.
- Nutrition therapy, carbohydrate spread across meals and snacks, regular activity.
- Insulin is the preferred drug (doesn't cross the placenta). Metformin and glyburide cross the placenta: second-line.
- Risks: big baby, shoulder dystocia, preeclampsia, newborn hypoglycemia, stillbirth.
- 75 g OGTT 4–12 weeks postpartum; lifelong type 2 diabetes risk, so screen every 1–3 years.
Bleeding in early pregnancy
| Condition | Clues | Care |
|---|---|---|
| Miscarriage | Cramping, bleeding; threatened (closed cervix) → inevitable/incomplete (open) | Support; monitor bleeding; Rh immune globulin per protocol |
| Ectopic pregnancy | One-sided pelvic pain, spotting; shoulder pain, dizziness, hypotension = rupture | Stable and unruptured: methotrexate (no alcohol, folic acid or NSAIDs; follow hCG). Ruptured: emergency surgery |
| Molar pregnancy | Very high hCG, uterus larger than dates, severe vomiting, early preeclampsia, dark brown bleeding | Evacuation; follow hCG to zero; reliable contraception during follow-up |
Bleeding in later pregnancy
| Placenta previa | Placental abruption | |
|---|---|---|
| What | Placenta over or near the cervix | Placenta separates early from the uterine wall |
| Pain | Painless | Painful, tender |
| Blood | Bright red | Dark; may be hidden (concealed) |
| Uterus | Soft, relaxed | Rigid, board-like |
| Risks | Previous cesarean, multiparity, multiples | Hypertension, cocaine, smoking, trauma |
| Nursing | No vaginal exams until previa is ruled out by ultrasound; cesarean birth | Emergency: fetal distress, shock, DIC |
DIC labs
↓ platelets, ↓ fibrinogen, prolonged PT/aPTT, ↑ D-dimer. Bleeding from IV sites, gums, petechiae. Treat the cause; blood products.
Newborn Care
The first hours and days
APGAR (1 and 5 minutes)
| Sign | 0 | 1 | 2 |
|---|---|---|---|
| Heart rate | Absent | <100 | ≥100 |
| Resp. effort | Absent | Weak, irregular | Good cry |
| Muscle tone | Limp | Some flexion | Active motion |
| Reflex irritability | None | Grimace | Cry, cough, sneeze |
| Color | Blue/pale | Blue hands and feet | Pink all over |
7–10 normal · 4–6 moderate · 0–3 severe. Resuscitation never waits for the APGAR.
Normal values
| Heart rate | ~100–160/min (lower asleep, higher crying) |
| Respirations | 30–60/min; brief pauses <20 s normal |
| Temperature | 97.7–99.5°F (36.5–37.5°C) axillary |
| Weight loss | Up to ~7–10% in the first days; regained by 10–14 days |
Normal findings: acrocyanosis, molding, milia, erythema toxicum, Epstein pearls, small vaginal discharge or bleeding (maternal hormones). Caput crosses suture lines; cephalohematoma doesn't (and raises jaundice risk).
Routine newborn medications and screening
| Vitamin K | Single IM dose (0.5–1 mg) into the vastus lateralis within ~6 h: prevents vitamin K deficiency bleeding |
| Eye prophylaxis | Erythromycin 0.5% ophthalmic ointment within 1–2 h of birth (required by law in many states) |
| Hepatitis B | Birth dose within 24 h for medically stable newborns ≥2,000 g (AAP; what NCLEX tests). Mother HBsAg-positive: vaccine + HBIG within 12 h; status unknown: vaccine within 12 h. A Dec 2025 ACIP change (shared decision-making if the mother is HBsAg-negative) was blocked by a federal court in March 2026; check the current CDC schedule. Updated |
| RSV protection | Nirsevimab (or clesrovimab) IM for infants entering their first RSV season, unless the mother had the RSV vaccine ≥14 days before birth New |
| Screening | Newborn blood spot after 24 h of feeding; hearing; critical congenital heart disease pulse oximetry at ≥24 h (right hand and a foot) |
Hypoglycemia
At risk: infant of diabetic mother, small or large for dates, preterm, cold stress. Signs: jitteriness, poor feeding, floppy, apnea, high-pitched cry, temperature instability, seizures (or none). Check glucose early per protocol; feed; 40% dextrose gel to the cheek; IV dextrose if severe or persistent.
Jaundice
Within the first 24 h = pathologic: report now. Physiologic jaundice appears after 24 h and peaks day 3–5. Phototherapy: eye shields, maximum skin exposure, turn, feed often, monitor temperature and hydration. Treat by hour-specific bilirubin thresholds (AAP 2022).
Keeping baby warm and safe
- Dry immediately; skin-to-skin; hat; warm room. Heat loss: evaporation, conduction, convection, radiation.
- Safe sleep: on the back, firm flat surface, own sleep space in the parents' room, nothing soft in the crib, no smoking, avoid overheating.
- Cord: dry cord care: keep clean and dry, fold the diaper below the stump; falls off in ~10–14 days. Report redness, odor or drainage.
- Rear-facing car seat required for discharge; back seat, harness snug at the armpits.
Newborn reflexes
Moro (startle; gone by ~4–6 months) · rooting and sucking (~4 months) · palmar grasp (~3–4 months) · plantar grasp (~8–10 months) · tonic neck ("fencing", ~4–6 months) · stepping (~2 months) · Babinski (toes fan out: normal until ~1–2 years). An absent or one-sided Moro may mean injury (clavicle fracture, brachial plexus).
Pediatric Vital Signs and Safety
Normal ranges, pain scales and safe medication dosing
Approximate normal vital signs (awake, at rest)
| Age | Heart rate | Respirations | Hypotension if systolic BP below |
|---|---|---|---|
| Newborn (0–28 days) | 100–160 | 30–60 | 60 |
| Infant (1–12 months) | 100–160 | 30–50 | 70 |
| Toddler (1–2 yr) | 90–150 | 24–40 | 70 + (2 × age in years) |
| Preschool (3–5 yr) | 80–140 | 22–34 | 70 + (2 × age in years) |
| School age (6–12 yr) | 70–120 | 18–30 | 70 + (2 × age) up to 10 yr; then 90 |
| Adolescent (13–18 yr) | 60–100 | 12–20 | 90 |
Ranges vary between references; know your facility's chart. Count infant respirations and apical pulse for a full minute. Children compensate well, then crash: hypotension is a late sign of shock; tachycardia and delayed capillary refill come first.
Pain assessment
| FLACC | Pre-verbal or non-verbal (2 months–7 yr): Face, Legs, Activity, Cry, Consolability |
| Wong-Baker FACES | ~3 years and older |
| Numeric 0–10 | ~8 years and older (who understand numbers) |
| Neonates | NIPS, PIPP, or similar |
Non-drug comfort: breastfeeding or sucrose for infants during procedures, skin-to-skin, distraction, topical anesthetic before needles.
Safe dosing
- Doses are weight-based (mg/kg): weigh in kilograms and record kg only.
- Calculate the safe dose range and compare it with the order before giving.
- Never exceed the adult maximum dose.
- Oral liquids: use an oral syringe or the device supplied, never a kitchen spoon. Check the concentration.
Example: 22 lb child → 10 kg. Acetaminophen 15 mg/kg = 150 mg. Liquid 160 mg/5 mL → 150 ÷ 160 × 5 = 4.7 mL.
Development: the nursing angle
| Infant | Trust; stranger anxiety from ~6–8 months: keep parent present |
| Toddler | Autonomy; separation anxiety; simple choices; rituals |
| Preschool | Magical thinking (may see illness as punishment); use dolls to explain |
| School age | Industry; explain with simple science; involve in care |
| Adolescent | Identity; privacy; interview alone for part of the visit; body image |
Congenital Heart Defects
Acyanotic vs. cyanotic, and what the nurse watches for
Acyanotic (left-to-right shunt or obstruction)
| VSD | Most common CHD. Loud holosystolic murmur; may close on its own; large ones cause HF |
| ASD | Often silent in childhood; soft murmur |
| PDA | "Machinery" murmur, bounding pulses; common in preterm infants |
| Coarctation of aorta | High BP and bounding pulses in the arms; weak or absent femoral pulses; low BP in the legs |
| Aortic / pulmonary stenosis | Murmur; exercise intolerance; HF if severe |
ASD, VSD and PDA are acyanotic: extra blood goes to the lungs (risk of heart failure), not blue blood to the body.
Cyanotic (deoxygenated blood reaches the body)
| Tetralogy of Fallot | Pulmonary stenosis, VSD, overriding aorta, right ventricular hypertrophy. "Tet spells" |
| Transposition of great arteries | Severe cyanosis at birth; needs a mixing site (PDA/ASD); arterial switch surgery |
| Tricuspid atresia | Cyanosis; staged surgery |
| Truncus arteriosus | Single great vessel; cyanosis and HF |
| Hypoplastic left heart | Underdeveloped left side; duct-dependent; staged surgery (Norwood, Glenn, Fontan) |
Tet spell (hypercyanotic episode)
- Knee-chest position (older children squat): ↑ systemic resistance, more blood to the lungs.
- Keep calm; parent holds the child.
- Oxygen.
- Morphine, IV fluids, and other drugs as ordered.
Duct medicines
- To close a PDA (preterm): indomethacin, ibuprofen, or acetaminophen.
- To keep it open in duct-dependent defects: prostaglandin E1 (alprostadil) infusion. Watch for apnea, fever, flushing, low BP.
Heart failure in infants
- Tachypnea and sweating during feeds, poor feeding, poor weight gain, tachycardia, hepatomegaly, irritability. (Peripheral edema is less common than in adults.)
- Small frequent feeds; higher-calorie formula or fortified breast milk; tube feeds if tiring; rest; daily weight.
- Digoxin: count the apical pulse for 1 full minute; hold and notify per parameters (commonly infant <90–110, child <70); vomiting or poor feeding can be early toxicity. Furosemide: watch K⁺.
Kawasaki disease (acquired)
- Fever ≥5 days + features: red eyes without discharge, red cracked lips and "strawberry tongue", rash, swollen hands and feet then peeling, a large neck lymph node.
- Danger: coronary artery aneurysms (echocardiograms).
- Treatment: IVIG + aspirin (one of the few times aspirin is used in children).
- Delay live vaccines (MMR, varicella) ~11 months after IVIG. Report flu or chickenpox exposure while on aspirin (Reye's syndrome).
Pediatric CPR and Choking
2025 AHA Pediatric Basic Life Support
Who counts as what
- Infant: under 1 year (excluding newborns at birth).
- Child: 1 year to puberty (breast development in girls, underarm hair in boys).
- Adolescents after puberty: use adult BLS.
Check
- Pulse: brachial (infant), carotid or femoral (child), up to 10 sec.
- Start compressions if no pulse, or HR <60 with poor perfusion despite good ventilation.
Compressions
| Rate | 100–120/min, full recoil |
| Depth | At least ⅓ of chest depth: ~1.5 in (4 cm) infant, ~2 in (5 cm) child |
| Ratio | 30:2 one rescuer · 15:2 two rescuers |
| Infant hands Updated | Two-thumb encircling hands, or the heel of one hand. The two-finger technique is no longer recommended (2025) |
| Child hands | One or two hands, lower half of sternum |
Breathing
- Pulse present but not breathing well: 1 breath every 2–3 sec (20–30/min).
- With an advanced airway during CPR: 1 breath every 2–3 sec, compressions continuous.
- Just enough to make the chest rise. Over-ventilation is harmful.
Calling for help and the AED
- Alone, unwitnessed arrest: give 2 min of CPR first, then call and get the AED (likely respiratory cause).
- Sudden witnessed collapse: call and get the AED first (likely cardiac).
- AED: pediatric pads or dose attenuator for children <8 years if available; otherwise use adult pads (front and back if they would touch).
Choking (foreign-body airway obstruction)
Infant, responsive
- 5 back blows (face-down along your forearm, head lower than chest) then 5 chest thrusts; repeat.
- No abdominal thrusts in infants.
Child, responsive
- Back blows and abdominal thrusts: alternate cycles of 5 and 5 (2025 AHA) until the object comes out or the child becomes unresponsive.
If they become unresponsive
- Lower to the floor, call for help, start CPR (compressions).
- Before each set of breaths, look in the mouth: remove an object only if you can see it.
- No blind finger sweeps.
A child who can cough forcefully or cry: let them keep coughing and stay with them.
PALS doses to recognize
| Epinephrine | 0.01 mg/kg IV/IO (0.1 mL/kg of 0.1 mg/mL) every 3–5 min |
| Amiodarone | 5 mg/kg (VF/pulseless VT) |
| Defibrillation | 2 J/kg, then 4 J/kg (max 10 J/kg or adult dose) |
| Fluid bolus | 10–20 mL/kg isotonic crystalloid; reassess after each |
Pediatric Respiratory Illness
Bronchiolitis, croup, epiglottitis and foreign bodies
Bronchiolitis (usually RSV, under 2 years)
- Starts like a cold, then cough, wheeze, crackles, tachypnea, retractions, nasal flaring, poor feeding.
- Apnea can be the first sign in young or preterm infants.
- Worst around days 3–5.
Care is supportive
- Nasal suctioning (saline + bulb) before feeds and sleep.
- Hydration: small frequent feeds; NG or IV fluids if needed.
- Oxygen if SpO₂ stays <90%; high-flow nasal cannula for more severe cases.
- Contact precautions; hand hygiene; cluster care.
Prevention New
RSV vaccine in pregnancy (32–36 wk) or a long-acting antibody for the baby (nirsevimab or clesrovimab) before or during the first RSV season.
Croup (laryngotracheobronchitis)
- Usually parainfluenza virus; 6 months–3 years.
- Barking, seal-like cough, hoarse voice, inspiratory stridor; worse at night.
- Dexamethasone single dose (oral or IM) for all severities.
- Nebulized epinephrine for stridor at rest; observe 2–4 h after (symptoms can return).
- Keep the child calm, on the parent's lap. Mist therapy isn't proven.
Epiglottitis: airway emergency
- Sudden high fever, toxic look; the 4 Ds: drooling, dysphagia, dysphonia (muffled voice), distress; tripod position.
- Do not put anything in the mouth or examine the throat (no tongue blade, no throat swab): it can cause complete obstruction.
- Keep upright and calm; emergency airway equipment at the bedside; intubation in a controlled setting; IV antibiotics.
- Rare now thanks to the Hib vaccine.
Foreign-body aspiration
Sudden cough, choking or wheeze in a toddler, often one-sided decreased breath sounds. Prevent: no nuts, whole grapes, hard candy, popcorn or small toys for under 4s; cut food small.
Fever, Dehydration and Fluids
Comfort, safe antipyretic use, and rehydration
Fever
- Fever = ≥100.4°F (38.0°C).
- Infant <28 days with fever: full sepsis work-up. Up to 60–90 days: urgent evaluation.
- Treat the child's discomfort, not the number. Fever itself isn't harmful in most children.
- Light clothing, fluids, rest.
Antipyretics
| Acetaminophen | 10–15 mg/kg every 4–6 h; max 5 doses in 24 h (≤75 mg/kg/day, never more than 4 g) |
| Ibuprofen | 5–10 mg/kg every 6–8 h; max 40 mg/kg/day. Only from 6 months; give with food; avoid if dehydrated |
| Aspirin | Never for fever in children and teens (Reye's syndrome) |
Febrile seizure
6 months–5 years; brief, generalized. Side-lying, protect the head, nothing in the mouth, time it; call for help if >5 min. Antipyretics don't prevent them.
How dehydrated?
| Mild (3–5%) | Moderate (6–9%) | Severe (≥10%) | |
|---|---|---|---|
| Behavior | Alert | Irritable, thirsty | Lethargic |
| Mucous membranes | Slightly dry | Dry; ↓ tears | Parched; no tears |
| Eyes / fontanel | Normal | Sunken | Very sunken |
| Capillary refill | <2 s | 2–3 s | >3 s; cool, mottled skin |
| Heart rate / BP | Normal | Tachycardia | Tachycardia; low BP (late) |
| Urine output | Slightly ↓ | ↓ | Minimal or none |
Oral rehydration (mild–moderate)
- ORS 50 mL/kg (mild) or 100 mL/kg (moderate) over 3–4 h, in small frequent sips (5 mL every 1–2 min by spoon or syringe).
- Replace ongoing losses (~10 mL/kg per loose stool).
- Continue breastfeeding and normal diet once rehydrated.
- Avoid juice, soda and sports drinks (too much sugar).
IV fluids
- Severe dehydration or shock: 10–20 mL/kg isotonic bolus (normal saline or lactated Ringer's); reassess and repeat.
- Maintenance (Holliday-Segar): 100 mL/kg/day for the first 10 kg + 50 mL/kg/day for the next 10 kg + 20 mL/kg/day for each kg above 20.
- Example, 25 kg: 1,000 + 500 + 100 = 1,600 mL/day (~65 mL/h).
- Isotonic maintenance fluids are now preferred (lower risk of hyponatremia). Updated
- Add potassium only after the child voids.
Cystic Fibrosis
A genetic disease of thick secretions, now transformed by CFTR modulators
The basics
- Autosomal recessive (CFTR gene). Two carrier parents: 25% chance each pregnancy.
- Thick, sticky secretions block the lungs, pancreas, intestines, liver and reproductive tract.
Signs
- Meconium ileus at birth (often the first sign).
- Salty-tasting skin.
- Poor growth despite a big appetite; bulky, greasy, foul-smelling stools (steatorrhea).
- Chronic cough, repeated lung infections (Staph aureus, Pseudomonas), clubbing, nasal polyps.
- Most males are infertile (absent vas deferens).
Diagnosis
- Newborn screening (IRT blood test) → sweat chloride test.
- Sweat chloride ≥60 mmol/L = CF; 30–59 = intermediate (needs more testing).
- Genetic testing confirms the mutations.
CFTR modulators New
Fix the faulty protein for most mutations: elexacaftor/tezacaftor/ivacaftor (Trikafta) from age 2, and vanzacaftor/tezacaftor/deutivacaftor (Alyftrek) from age 6. Big gains in lung function, weight and survival. Monitor liver tests and eye exams (cataracts in children).
Lungs: airway clearance every day
- Chest physiotherapy, oscillating vest or PEP device, huff coughing, exercise: usually 1–2+ times a day.
- Usual order: bronchodilator → hypertonic saline → dornase alfa → airway clearance → inhaled antibiotic (e.g., tobramycin) → inhaled steroid if used.
- Airway clearance before meals (or 1 h after) to avoid vomiting.
- Infection control: people with CF keep ≥6 ft (2 m) apart from each other (cross-infection); contact precautions in hospital.
Pancreas and nutrition
- Pancreatic enzymes (pancrelipase) with every meal and snack, at the start of eating.
- Swallow capsules whole, or open and sprinkle beads on a small amount of acidic soft food (applesauce). Don't crush or chew the beads; don't mix with milk.
- Adjust dose to stools (fewer greasy stools = right dose).
- High-calorie, high-protein, high-fat (unrestricted fat) diet, individualized (some people on modulators now gain too much weight); extra salt in hot weather, fever or exercise.
- CF-specific fat-soluble vitamins A, D, E, K.
Complications
CF-related diabetes (yearly screening from age 10) · distal intestinal obstruction · liver disease · low bone density · pneumothorax · hemoptysis · depression and anxiety (screen).
Immunization Principles
Principles and the US routine childhood schedule (CDC/AAP)
Live vaccines
MMR, varicella, rotavirus (oral), live nasal influenza (LAIV), yellow fever, oral typhoid. (BCG and oral polio are not used routinely in the US.)
- Not in pregnancy or severe immunosuppression (e.g., chemotherapy, high-dose steroids).
- Two live injected vaccines: same day or ≥28 days apart.
- After blood products or IVIG: live vaccines may need to be delayed (months).
Contraindications vs. not
True contraindication: severe allergic reaction (anaphylaxis) to a previous dose or a vaccine component.
Precaution: moderate or severe acute illness (delay).
Not reasons to delay: mild illness or low fever, taking antibiotics, breastfeeding, prematurity (vaccinate by chronological age), egg allergy (any flu vaccine can be given).
Giving the injection
| Who | IM site | Needle (typical) |
|---|---|---|
| Newborns and infants | Vastus lateralis (anterolateral thigh) | ⅝–1 in, 22–25 G |
| Toddlers 1–2 yr | Vastus lateralis (preferred) or deltoid if enough muscle | ⅝–1¼ in |
| 3 years and older | Deltoid (thigh if needed) | ⅝–1 in |
- Subcutaneous vaccines (MMR, varicella): fatty tissue of the thigh (infants) or upper outer arm.
- Rotavirus is oral: first dose by 14 weeks 6 days; last dose by 8 months.
- No need to aspirate. Give the most painful vaccine last. Comfort: breastfeeding, sucrose, holding, distraction.
- Observe 15 minutes (adolescents seated: fainting risk). Keep epinephrine available.
- Document vaccine, lot, site, date and the information given.
US routine childhood schedule (AAP / CDC)
| Age | Vaccines |
|---|---|
| Birth | Hep B #1 (within 24 h) · RSV antibody (nirsevimab or clesrovimab) Oct–Mar if mother not vaccinated |
| 1–2 months | Hep B #2 |
| 2 months | DTaP, Hib, IPV, PCV, rotavirus |
| 4 months | DTaP, Hib, IPV, PCV, rotavirus |
| 6 months | DTaP, PCV, Hib and rotavirus (brand-dependent) · Hep B #3 and IPV #3 (6–18 mo) · influenza yearly from 6 months (2 doses the first season if <9 yr) |
| 12–15 months | MMR #1, varicella #1, Hib and PCV boosters · Hep A (2 doses, 6 months apart, by 23 mo) |
| 15–18 months | DTaP #4 |
| 4–6 years | DTaP #5, IPV #4, MMR #2, varicella #2 |
| 11–12 years | Tdap, HPV (can start at 9), MenACWY #1 |
| 16 years | MenACWY booster · MenB (16–23 yr, shared decision) |
Also: Tdap in every pregnancy (27–36 wk); COVID-19 vaccination per current CDC/AAP guidance.
Antidotes and Drug Levels
Reversal agents and therapeutic ranges you're expected to know
Antidotes and reversal agents
| Drug or poison | Antidote |
|---|---|
| Opioids | Naloxone (may need repeat doses: it wears off before many opioids) |
| Benzodiazepines | Flumazenil (can trigger seizures in long-term users) |
| Acetaminophen | Acetylcysteine (best within 8 h) |
| Heparin | Protamine sulfate (partial for enoxaparin) |
| Warfarin | Vitamin K; 4-factor PCC for serious bleeding |
| Dabigatran | Idarucizumab |
| Apixaban, rivaroxaban | 4-factor PCC (andexanet alfa was withdrawn from the US market in Dec 2025) |
| Digoxin | Digoxin immune fab |
| Beta blockers | Glucagon (also calcium, high-dose insulin) |
| Calcium channel blockers | Calcium, high-dose insulin, glucagon |
| Insulin, sulfonylureas | Glucose / glucagon; octreotide for sulfonylureas |
| Magnesium sulfate | Calcium gluconate |
| Drug or poison | Antidote |
|---|---|
| Anticholinergics | Physostigmine |
| Organophosphates, cholinergic crisis | Atropine + pralidoxime |
| Tricyclic antidepressants | Sodium bicarbonate (wide QRS) |
| Aspirin (salicylates) | Sodium bicarbonate; dialysis if severe |
| Iron | Deferoxamine |
| Lead | Succimer, edetate calcium disodium, dimercaprol |
| Cyanide (incl. nitroprusside) | Hydroxocobalamin |
| Methanol, ethylene glycol | Fomepizole |
| Methotrexate | Leucovorin |
| Isoniazid overdose | Pyridoxine (vitamin B6) |
| Local anesthetic toxicity | Lipid emulsion 20% |
| Malignant hyperthermia | Dantrolene |
| Serotonin syndrome | Cyproheptadine + supportive care |
Therapeutic drug levels
| Digoxin | 0.5–2.0 ng/mL (0.5–0.9 target in HF) |
| Lithium | 0.6–1.2 mEq/L; toxic >1.5 |
| Phenytoin | 10–20 mcg/mL |
| Valproic acid | 50–100 mcg/mL |
| Carbamazepine | 4–12 mcg/mL |
| Theophylline | 10–20 mcg/mL (many now aim 5–15) |
| Vancomycin | AUC 400–600 (trough-based dosing in some settings) |
| Gentamicin | Depends on regimen; low trough (<1–2 mcg/mL) |
Coagulation targets
| Heparin | aPTT ~1.5–2.5 × control, or anti-Xa 0.3–0.7 (per protocol) |
| Warfarin | INR 2–3; 2.5–3.5 for some mechanical valves (e.g., mitral) |
| Normal INR | ~0.8–1.1 (not on warfarin) |
Timing
- Trough: just before the next dose (lowest level).
- Peak: at a set time after the dose (e.g., 30 min after an IV infusion ends).
- High trough = toxicity risk; low peak = not effective.
Blood Pressure Medications
Classes, side effects, and what to teach
| Class | Examples | Key side effects and nursing points |
|---|---|---|
| ACE inhibitors (-pril) | lisinopril, enalapril, ramipril, captopril | Dry cough; angioedema (stop, protect airway; can happen any time); ↑ K⁺; first-dose hypotension; small creatinine rise is expected. Teratogenic. Avoid potassium supplements and salt substitutes. |
| ARBs (-sartan) | losartan, valsartan, olmesartan | Like ACE inhibitors but cough is rare. Never combine an ACE inhibitor + ARB. Teratogenic. |
| ARNI | sacubitril/valsartan | For HFrEF. 36-hour gap after stopping an ACE inhibitor. |
| Beta blockers (-olol) | Cardioselective (β1): metoprolol, atenolol, bisoprolol. Non-selective: propranolol, nadolol; carvedilol and labetalol also block α1 | Bradycardia, hypotension, fatigue; bronchospasm (non-selective, caution in asthma); masks hypoglycemia (tachycardia, tremor; sweating still occurs). Don't stop abruptly (rebound tachycardia, angina). Hold per parameters (often HR <60, SBP <90–100). |
| Dihydropyridine CCBs (-dipine) | amlodipine, nifedipine | Ankle edema, flushing, headache, reflex tachycardia, gum overgrowth. Immediate-release nifedipine is not for chronic BP control. |
| Non-dihydropyridine CCBs | diltiazem, verapamil | Slow the heart: bradycardia, heart block; constipation (verapamil). Avoid in HFrEF. Grapefruit interaction. |
| Thiazide diuretics | chlorthalidone, hydrochlorothiazide | ↓ K⁺, ↓ Na⁺, ↑ Ca²⁺, ↑ glucose, ↑ uric acid (gout); see Diuretics. |
| Alpha-1 blockers (-osin) | doxazosin, prazosin, terazosin | First-dose orthostatic hypotension: take at bedtime. Also used for BPH (tamsulosin). |
| Central alpha-2 agonists | clonidine, methyldopa | Drowsiness, dry mouth, bradycardia. Clonidine: severe rebound hypertension if stopped suddenly. Methyldopa is used in pregnancy. |
| Direct vasodilators | hydralazine, minoxidil, nitroprusside (IV) | Reflex tachycardia, fluid retention. Hydralazine: lupus-like syndrome. Nitroprusside: ICU only, protect from light, cyanide toxicity. |
Teaching for every BP drug
- Change position slowly; sit before standing; dangle legs.
- Don't stop suddenly (especially beta blockers, clonidine).
- Keep a home BP log; report dizziness or fainting.
- Avoid NSAIDs and decongestants (raise BP; NSAIDs harm kidneys with ACEi/ARB + diuretic).
- Limit alcohol and salt; take as prescribed even when feeling well.
Special situations
- Pregnancy: labetalol, extended-release nifedipine, methyldopa. No ACE inhibitors, ARBs, ARNI.
- Diabetes or CKD with protein in urine: ACE inhibitor or ARB preferred.
- Asthma: avoid non-selective beta blockers.
- Gout: thiazides can trigger attacks; losartan lowers uric acid.
- Angioedema history: no ACE inhibitors or ARNI.
Diuretics and Other Cardiac Drugs
Diuretics, antiarrhythmics, nitrates and vasoactive infusions
Diuretics
| Type | Examples | Key points |
|---|---|---|
| Loop | furosemide, bumetanide, torsemide | Act on the thick ascending loop of Henle; most potent. ↓ K⁺, ↓ Mg²⁺, ↓ Na⁺, dehydration, hypotension, ↑ glucose and uric acid. Ototoxicity with rapid IV push or high doses: give IV slowly. Low K⁺ raises digoxin toxicity. |
| Thiazide | hydrochlorothiazide, chlorthalidone, metolazone | Act on the distal convoluted tubule. ↓ K⁺, ↓ Na⁺, ↑ Ca²⁺, ↑ glucose, ↑ uric acid, photosensitivity. Raise lithium levels. |
| Potassium-sparing | spironolactone, eplerenone, amiloride, triamterene | ↑ K⁺: no potassium supplements or salt substitutes; caution with ACEi/ARB. Spironolactone: gynecomastia, menstrual changes. |
| Osmotic | mannitol | ↓ intracranial and intraocular pressure. Use an in-line filter (crystals). Watch for fluid overload and pulmonary edema, electrolytes, osmolality. |
| Carbonic anhydrase inhibitor | acetazolamide | Glaucoma, altitude sickness. Metabolic acidosis, low K⁺, tingling. |
All diuretics: give in the morning (avoid nocturia), daily weight, I&O, BP, electrolytes. Sulfa allergy is not a reliable reason to avoid loop or thiazide diuretics (cross-reactivity is not supported). Updated
Amiodarone
For VT/VF and atrial fibrillation. Long half-life (weeks to months).
- Lungs: pulmonary toxicity (cough, dyspnea): baseline chest X-ray and lung tests.
- Thyroid: hypo- or hyperthyroidism (it contains iodine): check TSH.
- Liver tests; eyes (corneal deposits, optic neuropathy); skin (photosensitivity, blue-gray color).
- Bradycardia, QT prolongation; IV can cause hypotension.
- Raises warfarin and digoxin levels: doses need lowering.
Nitrates
- Sublingual tablet or spray: 1 dose every 5 min, max 3; call emergency services if pain isn't better 5 min after the first dose.
- Store tablets in the original dark glass bottle.
- Patch/ointment: rotate sites, remove the old one, wear gloves; plan a nitrate-free period (usually 10–12 h overnight) to prevent tolerance.
- Headache (expected; acetaminophen), hypotension, dizziness.
- Never with PDE-5 inhibitors (sildenafil, vardenafil within 24 h; tadalafil within 48 h).
Vasoactive infusions (ICU)
| Norepinephrine | First-line in septic shock. Vasoconstrictor. Extravasation → tissue necrosis: stop, leave the catheter, give phentolamine per protocol |
| Epinephrine | Anaphylaxis (IM 0.3–0.5 mg of 1 mg/mL in adults), cardiac arrest, shock |
| Vasopressin | Added to norepinephrine in septic shock |
| Dobutamine | Inotrope (↑ contractility) for cardiogenic shock and HF; can cause tachycardia, dysrhythmias |
| Dopamine | Bradycardia or shock (second-line); dose-dependent effects |
Use a central line when possible, an infusion pump, and frequent BP (often an arterial line). Typical target: MAP ≥65 mmHg.
Anticoagulants, Antiplatelets and Thrombolytics
Prevent clots, stop clot growth, or dissolve clots
Anticoagulants
| Drug | Route / monitoring | Key points |
|---|---|---|
| Heparin (unfractionated) | IV infusion or SC; aPTT or anti-Xa; platelets | Fast onset; protocol-based dosing. HIT: platelets fall >50% (usually day 5–10) or new clots → stop all heparin (including flushes), use argatroban or bivalirudin. Safe in pregnancy. Antidote: protamine. |
| Enoxaparin (LMWH) | SC; usually no routine labs (anti-Xa in kidney disease, obesity, pregnancy) | Abdomen ≥2 in (5 cm) from the umbilicus; don't expel the air bubble in the prefilled syringe; don't rub. Lower dose if CrCl <30. Spinal/epidural hematoma risk around neuraxial anesthesia. |
| Warfarin | Oral; PT/INR | Blocks vitamin K–dependent factors (II, VII, IX, X). Takes days to work: overlap with heparin/LMWH until INR is therapeutic. Teratogenic (OK in breastfeeding). Keep vitamin K intake consistent (don't avoid greens, just keep them steady). Many interactions: antibiotics, amiodarone, NSAIDs, alcohol, herbals. |
| DOACs: apixaban, rivaroxaban, edoxaban, dabigatran | Oral; no routine INR | Fewer interactions and fewer brain bleeds than warfarin (GI bleeding can be higher with some). Not for mechanical heart valves or pregnancy. Rivaroxaban 15/20 mg with food. Dabigatran: keep in the original bottle, don't open capsules. Doses adjusted for kidney function. |
Antiplatelets
| Aspirin | Irreversible; effect lasts the platelet's life (7–10 days) |
| Clopidogrel | Prodrug; omeprazole/esomeprazole reduce its effect (pantoprazole preferred) |
| Prasugrel | Not with prior stroke/TIA; caution age ≥75 or weight <60 kg |
| Ticagrelor | Twice daily; shortness of breath; keep aspirin ≤100 mg |
| Cilostazol | Leg claudication; contraindicated in HF |
After a coronary stent: never stop antiplatelets without the cardiologist (stent thrombosis).
Thrombolytics
Alteplase (stroke, STEMI, massive PE); tenecteplase (stroke, STEMI); reteplase (STEMI only). Dissolve existing clots.
Contraindications (examples): active bleeding, any prior brain hemorrhage, recent stroke, surgery or trauma, brain tumor, severe uncontrolled BP, bleeding disorder.
Nursing: place IV lines before; avoid IM injections and new punctures; neuro checks; watch for bleeding (gums, IV sites, urine, stool, neuro change). Stroke timing: within 4.5 h of last known well.
Bleeding precautions (teach)
- Soft toothbrush; electric razor; gentle flossing with waxed floss.
- Avoid contact sports and fall hazards.
- No NSAIDs or aspirin unless prescribed; check with the pharmacist before herbal products.
- Report: black or bloody stools, blood in urine, coffee-ground vomit, nosebleeds that won't stop, unusual bruising, severe headache.
- Wear medical ID; tell all providers and the dentist.
Warfarin needs Waiting (slow onset); Heparin Happens fast.
Insulin
Types, mixing, injecting, and handling hypoglycemia
Insulin types (approximate times)
| Type | Examples | Onset | Peak | Duration | Notes |
|---|---|---|---|---|---|
| Rapid-acting | lispro, aspart, glulisine | ~15 min | 1–2 h | 3–5 h | Give within 15 min of a meal; food must be ready |
| Short-acting | regular | 30–60 min | 2–4 h | 5–8 h | 30 min before meals. Used in IV infusions (DKA) |
| Intermediate | NPH | 1–2 h | 4–12 h | 12–18 h | Cloudy: roll gently to mix; peak = hypoglycemia risk |
| Long-acting | glargine, degludec (detemir discontinued in the US) | 1–2 h | No real peak | ~24 h (degludec up to 42 h) | Basal dose. Never mix with other insulins |
Mixing NPH and regular in one syringe
- Inject air into NPH (cloudy). Don't draw up.
- Inject air into regular (clear) and draw up the regular dose.
- Then draw up the NPH dose.
Giving insulin
- Subcutaneous: abdomen (fastest, ≥2 in from the umbilicus), back of arms, thighs, buttocks.
- Rotate sites within an area (lumps of fat called lipohypertrophy cause erratic absorption).
- Pens: prime 2 units; hold the needle in for ~10 sec.
- High-alert: independent double check per policy; always use "units", never "U".
- Storage: unopened in the fridge (don't freeze); in-use pen or vial at room temperature for the time on the label (often 28 days).
Hypoglycemia (<70 mg/dL)
Signs: shaky, sweaty, fast heartbeat, anxious, hungry, headache, confused, irritable → seizures, coma. Beta blockers can hide the warning signs.
- Awake and can swallow: 15 g fast carbohydrate (4 oz/120 mL juice or regular soda, glucose tablets).
- Recheck in 15 min; repeat if still <70.
- Once normal: a snack or meal with protein and carbohydrate.
- Can't swallow or unconscious: glucagon (IM, SC or nasal) or IV dextrose; turn on the side.
In the hospital
- Typical target for most inpatients: 140–180 mg/dL.
- Basal + mealtime + correction insulin is preferred over sliding-scale insulin alone. Updated
- NPO: basal insulin is usually continued (often at a reduced dose): clarify with the prescriber; hold mealtime insulin.
- DKA drip: regular insulin IV; check K⁺ first (don't start if K⁺ <3.3: replace K⁺ first). Give SC basal insulin 1–2 h before stopping the drip.
Sick-day rules (type 1 and insulin users)
Keep taking basal insulin even if not eating; check glucose every 2–4 h and ketones if >240 mg/dL; drink fluids; call if vomiting, unable to keep fluids down, moderate/large ketones, or glucose staying high.
Morning highs
Dawn phenomenon: early-morning hormone surge raises glucose (2–3 AM glucose normal or high). Somogyi effect: night-time low followed by a rebound high (2–3 AM glucose low). Check a 2–3 AM glucose to tell them apart.
Non-Insulin Diabetes Medications
ADA Standards of Care 2025
| Class | Examples | Key points |
|---|---|---|
| Biguanide | metformin | First-line for many. ↓ liver glucose output. No hypoglycemia alone. GI upset (take with meals; ER form helps); B12 deficiency. Not if eGFR <30. Hold around iodinated contrast in kidney impairment or unstable patients; restart after 48 h if kidney function is stable. Rare lactic acidosis. |
| SGLT2 inhibitors (-gliflozin) | empagliflozin, dapagliflozin, canagliflozin | Glucose leaves in urine. Protect heart and kidneys. Genital yeast infections, UTIs, dehydration, low BP, euglycemic DKA (DKA with near-normal glucose). Hold ~3 days before surgery and when acutely ill or not eating. |
| GLP-1 receptor agonists | semaglutide (injection or tablet), dulaglutide, liraglutide; tirzepatide (GIP/GLP-1) | Weekly or daily injection. Weight loss; heart benefit. Nausea, vomiting, diarrhea; pancreatitis (severe abdominal pain → stop, report); gallbladder disease. Slow stomach emptying: tell the anesthesia team (aspiration risk). Not with personal or family history of medullary thyroid cancer or MEN2. Oral semaglutide: empty stomach, ≤4 oz water, wait 30 min. |
| DPP-4 inhibitors (-gliptin) | sitagliptin, linagliptin | Modest effect; weight-neutral; low hypoglycemia. Joint pain, pancreatitis. Don't combine with a GLP-1 RA. |
| Sulfonylureas | glipizide, glimepiride, glyburide | Force insulin release: hypoglycemia (especially older adults: avoid glyburide), weight gain. Take with breakfast; don't skip meals. |
| Thiazolidinediones (-glitazone) | pioglitazone | Fluid retention, heart failure (avoid in HF), weight gain, fractures. Monitor liver tests. |
| Alpha-glucosidase inhibitors | acarbose | Take with the first bite; gas, bloating. Treat lows with glucose (table sugar won't be absorbed well). |
Targets (individualized)
| A1C | <7% for many adults (less strict, e.g. <8%, for frail or older adults) |
| Before meals | 80–130 mg/dL |
| 1–2 h after meals | <180 mg/dL |
| Hypoglycemia | Level 1 <70 · Level 2 <54 · Level 3: needs help from another person |
Nursing points
- Before contrast scans: check metformin and kidney function.
- Before surgery: ask about SGLT2 inhibitors and GLP-1 RAs (both may need holding per protocol).
- Teach foot care, eye exams yearly, kidney checks (urine albumin), BP and cholesterol control.
- Watch for hypoglycemia when combining sulfonylureas or insulin with other agents.
Antibiotics I
Beta-lactams, vancomycin, aminoglycosides and fluoroquinolones
Rules for every antibiotic
- Ask about allergies and what the reaction was. Most people labelled "penicillin-allergic" can actually tolerate it when tested.
- Cultures before the first dose, but never delay antibiotics in sepsis.
- Take exactly as prescribed for the full prescribed course.
- Report ≥3 watery stools in 24 h (C. diff): contact precautions, soap and water hand hygiene (alcohol gel doesn't kill spores).
- Superinfection: thrush, vaginal yeast infection.
Birth control and antibiotics Updated
Most antibiotics (including penicillins, cephalosporins and tetracyclines) do not reduce hormonal contraceptive effectiveness (CDC). The important exception is rifampin/rifabutin: use a backup method. Vomiting or severe diarrhea can still reduce pill absorption.
| Class | Examples | Key points |
|---|---|---|
| Penicillins | amoxicillin, amoxicillin-clavulanate, ampicillin, penicillin G, piperacillin-tazobactam | Rash, anaphylaxis, diarrhea. Observe after first dose. Penicillin G benzathine is IM only: never IV (can cause cardiac arrest). |
| Cephalosporins | cefazolin, cephalexin, ceftriaxone, cefepime | Cross-reaction with penicillin allergy is low (~1–2%); follow policy if the penicillin reaction was severe. Ceftriaxone: don't mix with calcium IV solutions (precipitates; especially newborns). Cefepime: confusion and seizures in kidney impairment. |
| Carbapenems | meropenem, imipenem, ertapenem | Broad spectrum. Seizure risk (imipenem). Lowers valproic acid levels: avoid together. |
| Vancomycin | IV; oral (for C. diff only) | MRSA, serious gram-positive infections. Infuse over ≥60 min (longer for bigger doses). Vancomycin infusion reaction (formerly "red man syndrome"): flushing, itching, rash of face/neck/upper body, low BP → slow or pause the infusion; antihistamine. Not a true allergy. Nephrotoxicity (worse with piperacillin-tazobactam), ototoxicity. Oral vancomycin isn't absorbed: it treats C. diff in the gut. |
| Aminoglycosides | gentamicin, tobramycin, amikacin; neomycin (oral) | Nephrotoxicity (creatinine, urine output) and ototoxicity (tinnitus, hearing loss, vertigo: may be permanent). Peak and trough levels. Can worsen myasthenia gravis. Neomycin isn't absorbed (bowel prep). |
| Fluoroquinolones (-floxacin) | ciprofloxacin, levofloxacin, moxifloxacin | Boxed warnings: tendon rupture (age >60, steroids, transplant), peripheral neuropathy, confusion and other CNS effects, worsening myasthenia gravis. Also aortic aneurysm, blood sugar swings, QT prolongation, photosensitivity. Separate from antacids, calcium, iron, zinc (2 h before or 6 h after). Avoid for simple UTI, sinusitis or bronchitis when other options exist. |
Vancomycin monitoring Updated
For serious MRSA infections, current guidelines (2020) recommend dosing by AUC (area under the curve) 400–600, not trough levels alone. If your facility uses troughs, draw the trough just before the next dose.
Antidepressants
SSRIs, SNRIs, bupropion, TCAs and MAOIs
| Class | Examples | Key points |
|---|---|---|
| SSRIs | sertraline, escitalopram, citalopram, fluoxetine, paroxetine | First-line for depression and anxiety. Nausea, sexual dysfunction, insomnia or sleepiness, low sodium (older adults), bleeding risk with NSAIDs/anticoagulants. Citalopram: QT (dose limits). Fluoxetine's long half-life means less withdrawal. |
| SNRIs | venlafaxine, duloxetine, desvenlafaxine | Depression, anxiety, nerve pain, fibromyalgia (duloxetine). Can raise BP; sweating; nausea. Bad withdrawal if stopped suddenly (venlafaxine). |
| NDRI | bupropion | Depression, smoking cessation. No sexual side effects or weight gain. Lowers seizure threshold: contraindicated in seizure disorders and in bulimia or anorexia (higher seizure risk). |
| Others | mirtazapine; trazodone | Mirtazapine: sedation, weight gain, take at bedtime. Trazodone: sedation (used for sleep), orthostasis, priapism (emergency). |
| Tricyclics (TCAs) | amitriptyline, nortriptyline, imipramine, clomipramine | Uses: depression, nerve pain, migraine prevention, bedwetting (imipramine), OCD (clomipramine). Anticholinergic effects, orthostasis, sedation. Deadly in overdose (wide QRS, dysrhythmias, seizures): give small supplies. Antidote: sodium bicarbonate. |
| MAOIs | phenelzine, tranylcypromine, isocarboxazid; selegiline patch | Used for treatment-resistant (and atypical) depression. Tyramine → hypertensive crisis. Many drug interactions. |
Teach for all antidepressants
- Full effect takes 4–6 weeks (some improvement may come in 1–2 weeks).
- Don't stop suddenly (discontinuation symptoms): taper.
- Boxed warning: increased suicidal thoughts in people under 25, especially early on or after dose changes. As energy returns before mood lifts, a person may act on a plan: monitor closely.
- Avoid alcohol; no St. John's wort.
MAOI diet and drug rules
Avoid tyramine: aged cheese, cured, smoked or fermented meats (salami, pepperoni), tap or draft beer, soy sauce, sauerkraut, kimchi, fava beans, overripe or spoiled food, yeast extracts.
Hypertensive crisis: severe occipital headache, stiff neck, chest pain, palpitations, sweating.
Never combine with SSRIs, SNRIs, TCAs, meperidine, tramadol, dextromethorphan, linezolid, St. John's wort. Wait 14 days after stopping an MAOI (and 5 weeks after fluoxetine before starting one).
Serotonin syndrome
Antipsychotics, Mood Stabilizers and Anxiolytics
Including ADHD medications
First-generation (typical)
haloperidol, chlorpromazine, fluphenazine. Block dopamine (D2) receptors. Best for positive symptoms (hallucinations, delusions).
- Higher risk of extrapyramidal symptoms (EPS), tardive dyskinesia, NMS.
- Haloperidol: QT prolongation. Long-acting depot injections (decanoate) are given IM only.
Second-generation (atypical)
risperidone, olanzapine, quetiapine, aripiprazole, ziprasidone, lurasidone, clozapine. Block dopamine and serotonin receptors; treat positive and some negative symptoms.
- Metabolic syndrome: weight gain, high glucose and lipids. Check weight, glucose, lipids at baseline and regularly.
- Clozapine: severe neutropenia (monitor ANC), myocarditis (first weeks), seizures, severe constipation, drooling.
- Ziprasidone and lurasidone: take with food.
- New: xanomeline-trospium (2024) works without blocking dopamine. New
Movement and serious reactions
| Acute dystonia | Hours–days: neck, eye (oculogyric crisis) or tongue spasm → benztropine or diphenhydramine IM/IV |
| Akathisia | Restlessness, can't sit still → lower dose, propranolol, benzodiazepine |
| Parkinsonism | Tremor, rigidity, shuffling → benztropine, amantadine |
| Tardive dyskinesia | Months–years: lip smacking, tongue movements, grimacing; may be permanent. Screen with AIMS. Treat with valbenazine or deutetrabenazine |
| Neuroleptic malignant syndrome | Emergency: high fever, "lead-pipe" rigidity, altered mental status, unstable BP and HR, ↑ CK. Stop the drug, cool, fluids, dantrolene or bromocriptine |
Lithium
- Level 0.6–1.2 mEq/L; toxic >1.5. Draw ~12 h after the last dose.
- Keep sodium intake and fluids normal and steady (2–3 L/day). Low sodium or dehydration (vomiting, sweating, heat) → toxicity.
- Raise levels: NSAIDs, ACE inhibitors/ARBs, thiazides.
- Expected: fine tremor, thirst, frequent urination, weight gain. Long-term: hypothyroidism, kidney effects.
- Toxicity: vomiting, diarrhea, coarse tremor, confusion, ataxia, seizures.
- Teratogenic (heart defect): plan pregnancy with the prescriber.
Other mood stabilizers
- Valproate: liver toxicity, pancreatitis, low platelets, weight gain; major birth defects (avoid in pregnancy).
- Carbamazepine: SJS (HLA-B*1502 testing in Asian ancestry), low blood counts, low sodium; weakens birth control pills.
- Lamotrigine: rash → SJS: must be increased slowly; report any rash.
Anxiolytics
- Benzodiazepines (lorazepam, diazepam, alprazolam, chlordiazepoxide): sedation, falls (avoid in older adults where possible), dependence, withdrawal seizures if stopped suddenly. Boxed warning: with opioids → respiratory depression and death. Antidote: flumazenil. Used for alcohol withdrawal.
- Buspirone: no dependence; takes 2–4 weeks; not for "as needed" use.
ADHD medications
- Stimulants (methylphenidate, amphetamines): appetite and weight loss, insomnia (give early in the day), ↑ HR and BP, growth monitoring, misuse risk (controlled drug).
- Non-stimulants: atomoxetine (suicidal thoughts warning), viloxazine, guanfacine, clonidine (sedation, low BP).
Pain Medications
Acetaminophen, NSAIDs, aspirin and opioids
Compare
| Acetaminophen | NSAIDs | Aspirin | Opioids | |
|---|---|---|---|---|
| Pain | ✓ | ✓ | ✓ | ✓ (moderate–severe) |
| Fever | ✓ | ✓ | ✓ | – |
| Inflammation | – (none) | ✓ | ✓ | – |
| Antiplatelet | – | Temporary | ✓ (irreversible) | – |
| Main danger | Liver | GI bleed, kidneys, heart | Bleeding; Reye's in children | Respiratory depression |
Acetaminophen
- Max 4 g/day in healthy adults (some labels and older adults: 3 g); ≤2 g/day with liver disease or regular alcohol use. It's the preferred pain reliever in cirrhosis at these lower doses.
- Hidden acetaminophen in combination products (cold remedies, hydrocodone/APAP): add them up.
- Overdose may look fine at first; liver failure in 2–3 days. Antidote: acetylcysteine.
NSAIDs (ibuprofen, naproxen, ketorolac, celecoxib)
- Take with food; GI bleeding (black stools, coffee-ground vomit); a PPI may be added.
- Kidney injury (especially with dehydration, ACEi/ARB + diuretic); ↑ BP; ↑ heart attack and stroke risk.
- Ketorolac: max 5 days. Avoid NSAIDs from ~20 weeks of pregnancy unless prescribed.
- Some people with asthma react (aspirin-exacerbated respiratory disease).
Opioids
- morphine, hydromorphone, oxycodone, hydrocodone, fentanyl, methadone, tramadol.
- Assess sedation before respirations: increasing sleepiness comes before respiratory depression (use a sedation scale such as POSS).
- Naloxone: dilute and titrate IV in small doses (e.g., 0.04–0.4 mg) for over-sedation; 4 mg nasal in the community. Watch for return of sedation and for withdrawal and pain.
- Constipation doesn't go away: start a stimulant laxative (senna) with the opioid; softener alone isn't enough.
- Nausea, itching, urinary retention, orthostasis, confusion in older adults.
- Morphine: active metabolites build up in kidney failure (hydromorphone or fentanyl preferred). Avoid meperidine (seizures).
- Tramadol: seizures, serotonin syndrome.
Fentanyl patch
- Only for opioid-tolerant patients with chronic pain. Not for acute pain.
- Change every 72 h; remove the old patch; fold sticky sides together and dispose safely.
- Heat increases absorption (fever, heating pads, hot tubs, saunas): overdose risk.
- Keep away from children and pets (accidental exposure can kill).
New non-opioid option New
Suzetrigine (approved 2025) blocks pain signals in peripheral nerves (NaV1.8) for moderate-to-severe acute pain, without opioid sedation or addiction risk. Many interactions (CYP3A); avoid grapefruit.
Multimodal analgesia
Combine acetaminophen + NSAID + regional techniques + non-drug methods to reduce opioid needs.
Respiratory Medications
Inhalers, biologics, and cold and cough products
| Class | Examples | Key points |
|---|---|---|
| SABA (short-acting β2 agonist) | albuterol, levalbuterol | Quick relief. Tachycardia, tremor, nervousness, low K⁺. Needing it often = poor control. |
| LABA (long-acting) | salmeterol, formoterol, vilanterol | Never alone in asthma: always with an inhaled steroid. Formoterol works quickly, so ICS-formoterol can be used as a reliever. |
| Antimuscarinics | ipratropium (short); tiotropium, umeclidinium (long) | Dry mouth; caution in narrow-angle glaucoma and urinary retention (BPH). Keep spray out of eyes. |
| Inhaled corticosteroids | budesonide, fluticasone, beclomethasone | Control inflammation; not for quick relief. Thrush and hoarseness: spacer, rinse and spit. |
| ICS-formoterol | budesonide-formoterol | Preferred asthma reliever and maintenance-and-reliever therapy (GINA). Updated |
| Leukotriene modifier | montelukast | Oral, evening. Boxed warning: mood changes, agitation, nightmares, suicidal thoughts. |
| Biologics | omalizumab, mepolizumab, benralizumab, dupilumab, tezepelumab | Injections for severe asthma (some for COPD). Watch for anaphylaxis after doses (especially omalizumab). |
| Methylxanthine | theophylline | Narrow range; toxicity: tachycardia, vomiting, seizures. Caffeine adds to effects; many interactions. |
Cold, allergy and cough products
- First-generation antihistamines (diphenhydramine, chlorpheniramine): sedation, anticholinergic effects; avoid in older adults. Second-generation (loratadine, cetirizine) cause less drowsiness.
- Decongestants (pseudoephedrine): raise BP and HR; avoid in uncontrolled hypertension. Nasal sprays (oxymetazoline): max ~3 days (rebound congestion). Oral phenylephrine is ineffective as a decongestant (FDA advisory committee 2023; FDA proposed removing it in 2024).
- Dextromethorphan: serotonin syndrome with SSRIs/MAOIs.
- Benzonatate: swallow whole (chewing numbs the throat; dangerous for young children).
- No OTC cough and cold medicines for children under 4 (US labeling).
Systemic corticosteroids (short-term)
- Prednisone, methylprednisolone for exacerbations.
- Take in the morning with food.
- High glucose (check in diabetes), insomnia, mood changes, fluid retention, increased appetite.
- Longer courses: taper (see Endocrine).
Inhaler order
Bronchodilator first, then the steroid. Same medicine: wait 30–60 sec between puffs.
GI Medications
Acid, nausea, motility, bowels and the liver
| Drug | Key points |
|---|---|
| Antacids | Calcium carbonate (Tums): constipation. Magnesium hydroxide: diarrhea; avoid in kidney failure. Aluminum hydroxide: constipation. Take 1–3 h after meals and at bedtime; separate from other drugs by 1–2 h (they bind many drugs). |
| H2 blockers (-tidine) | famotidine. Before meals or at bedtime. Confusion in older adults (cimetidine has many interactions). |
| PPIs (-prazole) | omeprazole, pantoprazole. 30–60 min before breakfast. Long-term: C. diff, pneumonia, fractures, low Mg²⁺, low B12. Use the lowest dose for the shortest time needed. |
| Sucralfate | Coats ulcers. Empty stomach 1 h before meals; separate other meds by 2 h; constipation. |
| Misoprostol | Protects the stomach during NSAID use. Causes miscarriage: not in pregnancy (unless used obstetrically); reliable contraception. |
| Ondansetron | Antiemetic. QT prolongation, headache, constipation. |
| Metoclopramide | Dopamine blocker that speeds stomach emptying (prokinetic) and stops nausea. Boxed warning: tardive dyskinesia: avoid use >12 weeks. EPS, drowsiness. Avoid in Parkinson's and bowel obstruction. |
| Promethazine | Sedation, respiratory depression in children <2 (contraindicated). IV: severe tissue injury: deep IM preferred. |
| Lactulose | Hepatic encephalopathy: pulls ammonia into the gut. Goal 2–3 soft stools a day; watch K⁺ and fluid. Often combined with rifaximin. |
| Loperamide | Not for bloody diarrhea, fever, or C. diff. High doses → dangerous heart rhythms. |
Laxatives
| Bulk-forming (psyllium) | With a full glass of water; 1–3 days |
| Osmotic (polyethylene glycol, lactulose) | 1–3 days; bowel prep (large-volume PEG) |
| Stimulant (senna, bisacodyl) | 6–12 h; for opioid constipation. Don't crush bisacodyl or take with milk/antacids |
| Softener (docusate) | Weak on its own |
H. pylori
Combination therapy for 14 days: a PPI + antibiotics (often bismuth quadruple therapy: PPI, bismuth, tetracycline, metronidazole). Bismuth turns stools and tongue black (harmless). Test for cure afterwards.
IBD
Aminosalicylates (mesalamine), steroids, immunomodulators, and biologics (infliximab, adalimumab, vedolizumab, ustekinumab): screen for TB and hepatitis B before biologics; no live vaccines.
Endocrine and Musculoskeletal Drugs
Thyroid, corticosteroids, gout and bone
Levothyroxine
- Same time daily on an empty stomach, 30–60 min before breakfast, with water.
- Separate from calcium, iron, antacids and binders by 4 h. Long-term PPIs can lower absorption (check TSH).
- TSH is rechecked after 6–8 weeks; dose changes take that long to show.
- Too much = hyperthyroid signs: palpitations, tachycardia, insomnia, weight loss, heat intolerance.
- Older adults and heart disease: start low, go slow. Dose usually increases in pregnancy. Lifelong.
Antithyroid drugs
- Methimazole is first-line for hyperthyroidism.
- PTU is used in the first trimester of pregnancy and in thyroid storm. It carries a boxed warning for severe liver injury.
- Both cross the placenta. PTU is preferred in the first trimester because methimazole can cause birth defects then; switching to methimazole afterwards may be considered (PTU liver risk).
- Both: agranulocytosis: report sore throat and fever immediately (check WBC).
- Others: beta blockers for symptoms; iodine before surgery; radioactive iodine (not in pregnancy or breastfeeding; distance and hygiene precautions).
Long-term corticosteroids (prednisone, hydrocortisone, dexamethasone)
- ↑ glucose, ↑ BP, fluid retention, weight gain, moon face
- Infection risk and masked signs of infection
- Osteoporosis (calcium, vitamin D, bone density), cataracts, glaucoma
- Stomach irritation (take with food), thin skin, poor wound healing
- Mood changes, insomnia
- Never stop suddenly after more than ~2–3 weeks: taper (risk of adrenal crisis).
- Extra "stress dosing" may be needed during illness or surgery: per prescriber.
- Take in the morning (mimics the body's rhythm).
- Avoid live vaccines on high doses.
Gout
- Acute flare: NSAIDs, colchicine (diarrhea is a toxicity sign; lower doses now used), or steroids.
- Prevention (lower uric acid): allopurinol (first-line), febuxostat. Allopurinol can be started during a flare with anti-inflammatory cover. Stop and report any rash (SJS); HLA-B*5801 testing for some ancestries.
- Fluids 2–3 L/day; limit alcohol (especially beer), organ meats, shellfish, sugary drinks.
Osteoporosis
- Bisphosphonates (alendronate, risedronate): first thing in the morning with a full glass of plain water, empty stomach, stay upright 30 min before food or other drugs (esophagitis). Rare jaw osteonecrosis (dental check) and thigh fractures.
- Denosumab: injection every 6 months; low calcium; don't stop without a plan (rebound spine fractures).
- Anabolic: teriparatide, abaloparatide, romosozumab (heart risk).
- Calcium + vitamin D; weight-bearing exercise; fall prevention.
Neurologic Medications
Seizures, Parkinson's, myasthenia gravis and dementia
Antiseizure medications
| Phenytoin | Level 10–20 mcg/mL. Gum overgrowth (oral hygiene), ataxia, nystagmus (toxicity), rash. IV: saline only, max 50 mg/min, in-line filter; extravasation injury. Many interactions. Fosphenytoin is safer IV |
| Levetiracetam | Few interactions; mood changes, irritability |
| Valproate | Liver, pancreas, platelets; birth defects |
| Carbamazepine | Low sodium, low blood counts, SJS; induces enzymes (weakens birth control) |
| Lamotrigine | Rash/SJS: slow dose increases |
Teach: don't stop suddenly (seizures); medical ID; no driving until cleared; folic acid before pregnancy. Status epilepticus: IV lorazepam (or IM midazolam) first, then a second-line IV drug (levetiracetam, fosphenytoin, valproate).
Parkinson's disease
- Carbidopa-levodopa: most effective. Nausea, orthostatic hypotension, dyskinesias, "wearing-off". High-protein meals reduce absorption: spread protein through the day. Dark urine and sweat. Never stop suddenly (NMS-like reaction).
- Dopamine agonists (pramipexole, ropinirole): sleep attacks, impulse-control problems (gambling, shopping).
- MAO-B inhibitors (selegiline, rasagiline); amantadine; anticholinergics (avoid in older adults).
- Avoid: metoclopramide, haloperidol (worsen symptoms).
Myasthenia gravis
- Pyridostigmine: take on time, 30–60 min before meals (helps chewing and swallowing).
- Myasthenic crisis (too little drug or illness) vs. cholinergic crisis (too much: SLUDGE, bradycardia, small pupils). Both cause weakness and respiratory failure: airway first; atropine for cholinergic crisis.
- Newer: complement inhibitors and FcRn blockers (e.g., efgartigimod).
- Avoid drugs that worsen MG: aminoglycosides, fluoroquinolones, magnesium, some beta blockers.
Alzheimer's disease
- Cholinesterase inhibitors (donepezil, rivastigmine patch, galantamine): nausea, bradycardia, syncope; donepezil at bedtime (vivid dreams → morning).
- Memantine: moderate–severe disease; dizziness.
- Anti-amyloid antibodies for early disease: donanemab (IV every 4 weeks), lecanemab (IV, or weekly subcutaneous autoinjector). MRI monitoring for ARIA (brain swelling or bleeding): headache, confusion, vision change. APOE ε4 carriers are at higher risk. New
High-Alert Medications, Electrolytes and Blood
Where small mistakes cause big harm
High-alert medications (ISMP)
Insulin · heparin and other anticoagulants · opioids · IV potassium chloride concentrate · magnesium sulfate · neuromuscular blockers · chemotherapy · hypertonic saline · sedation agents · oxytocin · TPN.
- Independent double checks per policy; smart pumps with dose limits.
- Avoid error-prone abbreviations: write "units" (not U or IU), "daily" (not QD), "every other day" (not QOD), "discharge" or "discontinue" (not D/C), "at bedtime" (not HS). No trailing zero (1 mg, not 1.0 mg); always a leading zero (0.5 mg, not .5 mg).
IV potassium: rules
- Never IV push or IM. Always diluted, on a pump.
- Usual max rate 10 mEq/h peripherally (higher only via central line with cardiac monitoring, per policy).
- Check urine output (≥30 mL/h) and kidney function first.
- Burns at the IV site: check for infiltration.
- Oral K⁺: with food and a full glass of water.
Electrolyte quick reference
| Electrolyte | Normal | Too low | Too high |
|---|---|---|---|
| Potassium | 3.5–5.0 mEq/L | Weakness, cramps, flat T waves, U waves, dysrhythmias | Peaked T waves, weakness, dysrhythmias → calcium gluconate, insulin + dextrose, albuterol, binders, dialysis |
| Sodium | 135–145 mEq/L | Confusion, headache, seizures | Thirst, confusion, seizures |
| Calcium | 8.5–10.5 mg/dL | Trousseau's and Chvostek's signs, tetany, long QT | Weakness, constipation, kidney stones, confusion |
| Magnesium | 1.5–2.5 mg/dL | Tremors, hyperreflexia, torsades | Loss of reflexes, respiratory depression |
| Phosphate | 2.5–4.5 mg/dL | Weakness (refeeding syndrome) | Itching; low calcium (kidney failure) |
Correct chronic low sodium slowly (generally ≤8–10 mEq/L in 24 h) to avoid osmotic demyelination. Ranges vary slightly by lab.
Blood transfusion
- Consent; two-person bedside check of patient ID and blood product.
- Baseline vital signs; normal saline only in the line; blood filter tubing. Adults: 18–20 G preferred (20–22 G acceptable for routine transfusion); 22–24 G for children.
- Stay with the patient for the first 15 min; go slowly at first.
- Finish each unit within 4 hours of leaving the blood bank.
1. Stop the transfusion. 2. Keep the IV open with normal saline through new tubing. 3. Vital signs; stay with the patient. 4. Notify provider and blood bank. 5. Send the bag and tubing back; collect blood and urine samples per policy.
Watch for fluid overload (TACO) in heart failure and older adults.
Infection Control and Isolation
CDC standard and transmission-based precautions
Standard precautions: every patient
- Hand hygiene: alcohol-based rub for most care; soap and water when hands are visibly soiled, and for C. diff or norovirus (alcohol doesn't kill spores).
- PPE based on expected exposure to blood or body fluids.
- Respiratory hygiene and cough etiquette; safe injection practices; never recap needles.
- Clean and disinfect equipment between patients.
PPE order
Put on (don)
- Gown
- Mask or respirator
- Goggles or face shield
- Gloves
Take off (doff)
- Gloves
- Goggles or face shield
- Gown
- Mask or respirator (outside the room for airborne)
- Hand hygiene
Gloves come off first because they're the most contaminated. Perform hand hygiene any time hands become contaminated during removal.
Transmission-based precautions
| Type | Examples | Room and PPE |
|---|---|---|
| Contact | MRSA, VRE, other multidrug-resistant organisms, RSV, scabies, lice, draining wounds, impetigo | Private room or cohort; gown and gloves; dedicated equipment (stethoscope, BP cuff) |
| Contact enteric ("contact plus") | C. difficile, norovirus, rotavirus, infectious diarrhea | Gown and gloves; soap and water hand hygiene; bleach-based (sporicidal) cleaning |
| Droplet | Influenza, pertussis, mumps, rubella, N. meningitidis and Hib (first 24 h of antibiotics), adenovirus, Mycoplasma pneumonia, group A strep pharyngitis/scarlet fever (first 24 h) | Private room (or ≥3 ft spacing + curtain); surgical mask on entering; patient wears a mask during transport |
| Airborne | TB, measles, chickenpox, shingles that is disseminated or in an immunocompromised patient (airborne + contact) | Negative-pressure room (AIIR), door closed; fit-tested N95 or higher; patient wears a surgical mask during transport |
COVID-19: CDC recommends an N95, eye protection, gown and gloves. Localized shingles in a patient with a normal immune system, fully covered: standard precautions. Staff who aren't immune to measles or chickenpox shouldn't care for those patients.
Neutropenic (protective) precautions
- ANC = WBC × (% neutrophils + % bands) ÷ 100. <500/mm³ = severe neutropenia.
- Private room; strict hand hygiene; no sick visitors; mask for the patient outside the room.
- No fresh flowers or standing water; safe food handling (well-cooked meat, washed produce).
- Avoid rectal temps, suppositories and enemas.
- Fever ≥100.4°F (38°C) = emergency: cultures and antibiotics within 1 hour.
Droplet: think of anything spread by a sneeze or cough at close range: flu, pertussis, mumps, rubella, meningococcal.
Contact: anything you could pick up by touch: resistant bacteria, diarrhea, skin infestations, wounds.
Sterile technique
A sterile field is only sterile if you can see it: keep it above waist level and in view; 1-inch border is non-sterile; don't reach across it; any doubt = contaminated; sterile touches sterile only; open the first flap of a package away from you.
Patient Safety
Falls, restraints, fire, seizures and medication safety
Fall prevention
- Screen on admission and every shift (e.g., Morse Fall Scale) and after any change.
- Bed in lowest position, wheels locked, call light and belongings within reach.
- Non-skid footwear; clear pathways; night light.
- Scheduled toileting (most falls happen on the way to the bathroom).
- Bed or chair alarms for high-risk patients; review sedating drugs.
- Side rails used to keep a patient from getting out of bed (e.g., all four up) count as a restraint and raise entrapment and fall-injury risk.
Restraints (CMS rules)
- Last resort, after less restrictive options fail; least restrictive type; never for staff convenience or discipline.
- Needs a prescriber's order, never "PRN".
- Violent or self-destructive behavior: order lasts up to 4 h (adults), 2 h (ages 9–17), 1 h (under 9); face-to-face evaluation within 1 hour.
- Non-violent (medical) restraints: renewed per hospital policy (commonly each calendar day).
- Monitor frequently per policy (often every 15 min); at least every 2 h: release, range of motion, skin, circulation, toileting, fluids.
- Tie to the bed frame (not the side rail) with a quick-release knot; two fingers fit under the restraint.
Fire
RACE
Rescue patients in danger · Alarm (pull it, call) · Confine (close doors) · Extinguish or Evacuate.
PASS (extinguisher)
Pull the pin · Aim at the base · Squeeze · Sweep side to side.
Evacuate horizontally first (to another unit on the same floor), then vertically. Ambulatory patients first, then wheelchair, then bed-bound (unless directed otherwise).
Seizure precautions
- Padded side rails, bed low, suction and oxygen at the bedside, IV access as ordered.
- During: stay, time it, turn on the side, protect the head, loosen clothing. Never restrain or put anything in the mouth.
- After: airway, suction, side-lying, neuro checks, reorient; document onset, duration, movements, aftermath.
- Seizure >5 min = status epilepticus: emergency.
Medication safety
Rights of medication administration
Right patient (2 identifiers: name + date of birth, not room number), drug, dose, route, time, documentation, plus right reason, response, and the patient's right to refuse.
Three checks
When pulling the drug, when preparing it, and at the bedside before giving it.
Don't
- Give a drug someone else prepared.
- Leave meds at the bedside.
- Crush extended-release (ER, XR, SR, LA), enteric-coated, or sublingual drugs.
- Use error-prone abbreviations (U, IU, QD, QOD, D/C, HS, trailing zeros).
If an error happens: assess the patient first, notify the prescriber, complete an incident report (not mentioned in the chart).
Older adults: Beers Criteria highlights
Avoid where possible: first-generation antihistamines (diphenhydramine), benzodiazepines and "Z-drugs" (zolpidem), anticholinergics, long-acting sulfonylureas (glyburide), muscle relaxants, routine NSAIDs, meperidine.
Vital Signs and Physical Assessment
Normal findings and what the abnormal ones mean
Adult vital signs
| Temperature | ~97.8–99.1°F (36.5–37.3°C) oral; fever ≥100.4°F (38°C) |
| Pulse | 60–100/min |
| Respirations | 12–20/min |
| Blood pressure | <120/<80 mmHg |
| SpO₂ | 95–100% (most adults) |
Pulse pressure = systolic − diastolic (normal ~40). MAP = (SBP + 2 × DBP) ÷ 3; ≥65 needed for organ perfusion. Count irregular pulses for a full minute; apical pulse at the 5th intercostal space, midclavicular line.
Grading scales
| Pulses | Pitting edema | ||
|---|---|---|---|
| 0 | Absent | 1+ | 2 mm, rebounds quickly |
| 1+ | Weak, thready | 2+ | 4 mm, ~10–15 sec |
| 2+ | Normal | 3+ | 6 mm, >1 min |
| 3+ | Bounding | 4+ | 8 mm, 2–5 min |
Capillary refill normal <2–3 sec. Skin turgor is unreliable in older adults (check the sternum or forehead, or rely on other signs).
Lung sounds
| Vesicular | Soft, low; most of the lungs; inspiration > expiration |
| Bronchial | Loud, high; over the trachea; expiration > inspiration. Abnormal over the lung fields → consolidation |
| Crackles | Popping (fine or coarse), usually inspiration: fluid in alveoli (HF, pneumonia, atelectasis) |
| Wheezes | Musical, high-pitched: narrowed airways (asthma, COPD) |
| Rhonchi | Low snoring sound: secretions in large airways; may clear with coughing |
| Stridor | High-pitched, inspiratory, upper-airway obstruction: emergency |
| Friction rub | Grating, with breathing: pleural inflammation |
Heart sounds
- S1 ("lub"): mitral and tricuspid valves close; loudest at the apex.
- S2 ("dub"): aortic and pulmonic valves close; loudest at the base.
- S3: after S2; volume overload, heart failure (can be normal in children, young athletes, pregnancy).
- S4: before S1; stiff ventricle (hypertension, MI).
- Murmurs graded 1–6 (4+ has a palpable thrill).
Listening points: "APE To Man"
Aortic: 2nd ICS right sternal border · Pulmonic: 2nd ICS left · Erb's point: 3rd ICS left · Tricuspid: 4th–5th ICS left lower sternal border · Mitral: 5th ICS midclavicular (apex).
Abdomen
Order: inspect, auscultate, percuss, palpate (palpating first changes bowel sounds). Normal bowel sounds ~5–30/min. Listen up to 5 min in each quadrant before calling them absent. Palpate tender areas last.
Pain assessment (OLDCARTS)
Onset · Location · Duration · Character · Aggravating factors · Relieving factors · Timing · Severity (0–10). Reassess after interventions (e.g., 30–60 min after oral, 15–30 min after IV). Pain is what the patient says it is.
Common Lab Values
Adult reference ranges (each lab's own ranges vary slightly: use yours)
Complete blood count
| WBC | 5,000–10,000/mm³ |
| RBC | Men 4.7–6.1 · Women 4.2–5.4 million/mm³ |
| Hemoglobin | Men 14–18 · Women 12–16 g/dL |
| Hematocrit | Men 42–52% · Women 37–47% |
| Platelets | 150,000–400,000/mm³ (bleeding risk <50,000; spontaneous bleeding <20,000) |
| ANC | >1,500 normal; <500 severe neutropenia |
Basic metabolic panel
| Sodium | 135–145 mEq/L |
| Potassium | 3.5–5.0 mEq/L |
| Chloride | 98–106 mEq/L |
| Bicarbonate (CO₂) | 22–26 mEq/L (some labs 23–29) |
| BUN | 10–20 mg/dL |
| Creatinine | ~0.6–1.2 mg/dL |
| Glucose (fasting) | 70–99 mg/dL |
| Calcium | 9.0–10.5 mg/dL (some labs 8.5–10.5) |
Other electrolytes and kidney
| Magnesium | 1.5–2.5 mg/dL (1.3–2.1 mEq/L) |
| Phosphorus | 2.5–4.5 mg/dL |
| eGFR | ≥90 mL/min/1.73 m² normal; <60 for 3 months = CKD |
| Serum osmolality | 275–295 mOsm/kg |
| Urine specific gravity | 1.005–1.030 (high = concentrated) |
| Uric acid | Men 4.0–8.5 · Women 2.7–7.3 mg/dL |
Coagulation
| PT | 11–12.5 sec |
| INR | 0.8–1.1 (warfarin goal usually 2–3) |
| aPTT | 30–40 sec |
| Fibrinogen | 200–400 mg/dL (low in DIC) |
| D-dimer | Below lab cut-off (high = clot breakdown; non-specific) |
Liver and pancreas
| ALT / AST | ~4–36 / 0–35 U/L (ranges vary) |
| Alkaline phosphatase | 30–120 U/L |
| Total bilirubin | 0.3–1.0 mg/dL |
| Albumin | 3.5–5.0 g/dL |
| Ammonia | Lab-specific (roughly 15–45 mcg/dL); high in hepatic encephalopathy |
| Lipase | Lab-specific; ≥3× upper limit supports pancreatitis |
Others
| Hemoglobin A1C | <5.7% normal · 5.7–6.4% prediabetes · ≥6.5% diabetes |
| TSH | ~0.4–4.0 mIU/L |
| Lactate | <2 mmol/L (≥4 in sepsis = shock risk) |
| BNP | <100 pg/mL |
| Troponin (high-sensitivity) | Below the lab's 99th percentile; rising = heart injury |
| CRP / ESR | Markers of inflammation |
IV Fluids and Vascular Access
Choosing fluids, spotting complications, and central-line care
IV fluid types
| Type | Examples | Use | Caution |
|---|---|---|---|
| Isotonic (stays in the vessels) | 0.9% NaCl, lactated Ringer's, Plasma-Lyte | Volume replacement, shock, blood transfusion (NS only), resuscitation | Fluid overload in HF and kidney failure |
| Hypotonic (moves into cells) | 0.45% NaCl; D5W once the sugar is used | Cellular dehydration, hypernatremia | Avoid in ↑ICP, burns, trauma (worsens swelling and third-spacing) |
| Hypertonic (pulls fluid out of cells) | 3% NaCl, D10W, D5NS, D5½NS, D5LR | Severe hyponatremia, cerebral edema (3% saline) | Fluid overload; 3% saline via pump with frequent Na⁺ checks |
D5W is not used for resuscitation or in brain injury. Hypertonic saline correction must be slow (generally ≤8–10 mEq/L in 24 h).
IV complications
| Problem | Signs | Action |
|---|---|---|
| Infiltration | Cool, pale, swollen, tight skin; slow flow | Stop, remove, elevate; warm or cold compress per fluid; restart elsewhere |
| Extravasation (vesicant) | As above + pain, blistering, tissue damage | Stop and disconnect; aspirate through the catheter; antidote per protocol (e.g., phentolamine for norepinephrine); then remove; elevate; notify |
| Phlebitis | Red, warm, tender, cord-like vein | Stop, remove, warm compress, restart in the other arm |
| Fluid overload | Crackles, dyspnea, JVD, ↑ BP, edema | Slow the IV, high Fowler's, oxygen, notify (diuretic) |
| Air embolism | Sudden dyspnea, chest pain, hypotension | Clamp the line; left side, head down (Trendelenburg); oxygen; call for help |
| Local infection | Redness, drainage at site, fever | Remove; culture per order |
Central lines (CLABSI prevention)
- Insertion: hand hygiene, maximal sterile barriers, chlorhexidine-alcohol skin prep; avoid the femoral site when possible.
- Scrub the hub 5–15 sec before every access; needleless connectors.
- Transparent dressing changed every 7 days (gauze every 2 days) or sooner if damp, loose or soiled.
- Flush with a 10 mL (or larger) syringe, push-pause technique.
- Review every day whether the line is still needed.
- Removal: patient flat or slightly head-down; Valsalva (or breath-hold) during removal; occlusive dressing.
- PICC: no BP or blood draws on that arm.
Parenteral nutrition (TPN)
- Central line (high dextrose); dedicated lumen; never add drugs.
- Filter per policy; change tubing every 24 h.
- Monitor glucose often (hyperglycemia); weigh daily; electrolytes.
- Don't stop suddenly: if the bag is late or runs out, hang D10W at the same rate (prevents rebound hypoglycemia).
- Refeeding syndrome in malnourished patients: low phosphate, K⁺ and Mg²⁺: start slowly.
Pressure Injuries and Wound Care
NPIAP staging, Braden scale, and wound healing
Pressure injury stages (NPIAP)
| Stage 1 | Intact skin with non-blanchable redness (may look different in darker skin: check warmth, firmness, pain) |
| Stage 2 | Partial-thickness loss with exposed dermis: shallow pink-red wound bed or intact/ruptured serum blister. No slough |
| Stage 3 | Full-thickness skin loss; fat may be visible; slough or eschar may be present; undermining or tunneling possible. No bone, tendon or muscle |
| Stage 4 | Full-thickness skin and tissue loss with exposed fascia, muscle, tendon, ligament, cartilage or bone |
| Unstageable | Base hidden by slough or eschar. Leave stable, dry eschar on heels in place |
| Deep tissue pressure injury | Intact or non-intact skin with persistent non-blanchable deep red, maroon or purple color, or a blood-filled blister |
Also: medical device–related injuries (staged) and mucosal membrane injuries (not staged). They're called "stages", not "types". Don't reverse-stage: a healing stage 3 stays "healing stage 3".
Braden scale
Six areas: sensory perception, moisture, activity, mobility, nutrition (each 1–4), friction and shear (1–3). Total 6–23; lower score = higher risk.
| 15–18 | Mild risk |
| 13–14 | Moderate risk |
| 10–12 | High risk |
| ≤9 | Very high risk |
Prevention
- Reposition regularly (commonly every 2 h in bed), 30° side-lying tilt.
- HOB ≤30° unless contraindicated (reduces shear); lift, don't drag.
- Float heels; pressure-redistributing mattress; no donut cushions.
- Keep skin clean and dry; barrier cream for incontinence.
- Don't massage red bony areas.
- Protein and calories (dietitian); hydration.
Wound basics
- Healing: primary intention (edges closed), secondary (left open, granulates), tertiary (delayed closure).
- Drainage: serous (clear), sanguineous (bloody), serosanguineous (pink), purulent (pus: infection).
- Infection: redness, warmth, swelling, pain, odor, purulent drainage, fever, usually days 3–7.
- Wound vac (negative pressure): keep the seal; don't leave it off for long periods (follow policy); stop and notify for bright red bleeding.
Stay with the patient; call for help; cover with sterile gauze moistened with sterile saline; low Fowler's with knees bent; nothing by mouth; monitor for shock.
Nutrition and Feeding
Diets, dysphagia, and enteral tube feeding
Texture diets
| Clear liquid | Water, clear broth, apple juice, gelatin, popsicles, tea or coffee without milk |
| Full liquid | Clear liquids + milk, pudding, yogurt, ice cream, cream soups, strained cereals |
| Pureed / mechanical soft | For chewing or swallowing problems |
IDDSI levels Updated
Drinks: 0 thin · 1 slightly thick · 2 mildly thick · 3 moderately thick. Foods: 3 liquidized · 4 pureed (also extremely thick drinks) · 5 minced and moist · 6 soft and bite-sized · 7 regular. These replace the old "nectar-thick" and "honey-thick" terms.
Therapeutic diets
| Cardiac | Low sodium, low saturated fat |
| Renal (CKD) | Limit sodium, potassium, phosphorus; protein as prescribed; fluid limit on dialysis |
| Diabetic | Consistent carbohydrate |
| Low residue | Flare of IBD, before colonoscopy |
| High fiber | Constipation, diverticulosis |
| Low purine | Gout: limit organ meats, shellfish, beer |
| Gluten-free | Celiac: no wheat, barley, rye ("BROW": also avoid oats unless certified gluten-free) |
Dysphagia and aspiration precautions
- Swallow screen before food, fluid or oral meds after stroke or extubation.
- Sit upright at 90°; stay up 30 min after meals.
- Chin tuck when swallowing; small bites; no rushing; check for pocketing.
- Thickened liquids at the ordered IDDSI level; straws only if allowed.
- Signs of aspiration: coughing, wet voice, drooling, ↓ SpO₂.
Enteral (tube) feeding
- X-ray confirms placement of a blindly placed tube before first use. Then mark the tube at the exit point and check length each time; aspirate pH ≤5 supports gastric placement. Auscultating air is not reliable.
- HOB ≥30–45° during feeding (always, for continuous feeds).
- Flush with water (often 30 mL) every 4 h and before and after each medication. Give meds separately; use liquids; never crush ER or enteric-coated drugs.
- Gastric residual checks are no longer routine in many ICUs: follow policy.
- Diarrhea, cramping: check rate, formula, medications (sorbitol), C. diff.
Nutrition markers
BMI = kg ÷ m². <18.5 underweight · 18.5–24.9 healthy · 25–29.9 overweight · ≥30 obesity. Albumin and prealbumin fall with inflammation, so they're poor nutrition markers on their own; use weight change and intake.
Elimination, Catheters and Ostomies
Urinary catheters, CAUTI prevention, enemas and ostomy care
Urinary catheter insertion
- Sterile technique; female: dorsal recumbent; male: hold penis upright at ~60–90°.
- Female: if the catheter enters the vagina, leave it as a landmark and insert a new sterile catheter into the urethra.
- Inflate the balloon only after urine returns (advance a little further first, to the hilt in males).
- Secure to the thigh (or abdomen for males) to prevent pulling.
- Bladder scanner: post-void residual >~150–200 mL suggests retention (follow protocol).
CAUTI prevention
- Insert only when truly needed (not for incontinence or convenience); remove as soon as possible (nurse-driven removal protocols).
- Closed drainage system; bag below the bladder and off the floor; no dependent loops.
- Daily perineal and meatal care with soap and water.
- Don't routinely irrigate or change the catheter; collect specimens from the sampling port with sterile technique.
- After removal: should void within ~6–8 h; measure the first voids.
Enemas and bowel care
- Left side-lying (Sims') position: follows the shape of the colon.
- Adult: insert the lubricated tip 3–4 in (7.5–10 cm); bag no higher than ~18 in above the anus.
- Cramping: lower the bag or pause; have the patient breathe slowly.
- "Enemas until clear": usually a maximum of 3 (follow orders).
- Digital removal of impaction can trigger a vagal response: watch for bradycardia.
Specimens
- Clean-catch midstream urine: clean front to back; start voiding, then collect midstream.
- 24-hour urine: discard the first void, then collect every void, ending with a final void at the same time the next day. Keep on ice or refrigerated as instructed. If a void is missed, restart.
- Stool for occult blood (FIT test is preferred: no diet restriction).
Ostomies
Stoma check
- Normal: moist, pink to beefy red, slightly raised. Swelling decreases over 6–8 weeks.
- Pale: anemia. Dusky, purple, brown or black: poor blood supply: report immediately.
- Mild bleeding on cleaning is normal (it's very vascular).
Pouching
- Cut the opening ~⅛ in (2–3 mm) larger than the stoma.
- Empty when ⅓–½ full; change the wafer every 3–7 days or if leaking.
- Skin barrier on clean, dry skin; check for irritation.
| Ileostomy | Colostomy (descending/sigmoid) | |
|---|---|---|
| Output | Liquid, continuous, enzyme-rich (skin damage) | Formed stool; may become regular |
| Risks | Dehydration, low Na⁺ and K⁺; food blockage | Constipation |
| Teach | Fluids 2–3 L/day; chew well; limit high-fiber foods that can block (nuts, popcorn, corn); ER tablets may pass whole | Odor control; some can irrigate to regulate |
Body image: encourage looking at and touching the stoma; ostomy nurse (WOC nurse) referral; support groups.
Perioperative Care
Before, during and after surgery
Before surgery
- Informed consent: the surgeon explains risks, benefits and alternatives; the nurse witnesses the signature and confirms the patient understands. Get it before sedating medications. Use a qualified interpreter if needed.
- Fasting (ASA): clear liquids up to 2 h before; breast milk 4 h; light meal, formula or non-human milk 6 h; fatty or fried food, meat ≥8 h.
- Remove jewelry, dentures, nail polish as policy requires; void.
- Check labs, allergies, H&P, pregnancy test as indicated, site marking by the surgeon.
Medications to ask about
- Anticoagulants and antiplatelets: hold per the surgeon's plan (e.g., warfarin ~5 days; DOACs 1–3+ days depending on drug and kidney function). Never stop after a recent stent without the cardiologist.
- SGLT2 inhibitors: hold ~3 days (ertugliflozin 4).
- GLP-1 receptor agonists: most patients continue them (2024 multisociety guidance); higher-risk patients (dose recently increased, nausea, vomiting, bloating) may need a 24-h clear-liquid diet before surgery. Tell the anesthesia team (aspiration risk).
- Insulin: basal dose usually reduced, not skipped; glucose checks.
- Herbal supplements (garlic, ginkgo, ginseng, St. John's wort): stop ~1–2 weeks before.
- Beta blockers usually continue; ACE inhibitors/ARBs often held the morning of surgery.
In the operating room
- Universal Protocol: pre-procedure verification, site marking, and a time-out with the whole team before the incision.
- Counts of sponges, sharps and instruments.
- Positioning: pad pressure points; avoid nerve injury.
- Circulating nurse (non-sterile) vs scrub nurse (sterile).
Malignant hyperthermia
Triggered by volatile anesthetic gases and succinylcholine. Earliest sign: unexplained rise in end-tidal CO₂, then tachycardia, muscle (jaw) rigidity, hyperkalemia; high fever is a late sign. Stop triggers, dantrolene IV, cool, treat high K⁺.
After surgery (PACU and unit)
- Airway first (jaw thrust if obstructed), breathing, circulation; vital signs often every 15 min at first.
- Pain and nausea control; level of consciousness; dressing and drains.
- Should void within ~6–8 h; bladder scan if not.
- Turn, cough, deep breathe; incentive spirometer 10 times/hour while awake.
- Early ambulation; SCDs and anticoagulant prophylaxis as ordered.
- Diet advanced as bowel function returns (flatus, bowel sounds).
Post-op complications: typical timing
| When | Complication | Clues |
|---|---|---|
| First hours | Hemorrhage, hypovolemic shock | Tachycardia, ↓ BP, restlessness, saturated dressing, bleeding under the patient |
| Days 1–2 | Atelectasis, pneumonia | ↓ breath sounds, crackles, fever, ↓ SpO₂ |
| Days 1–5 | Paralytic ileus, urinary retention, UTI | Distension, no bowel sounds or flatus; not voiding; burning |
| Days 3–7 | Wound infection | Red, warm, swollen, drainage, fever |
| Days 5–8 | Dehiscence / evisceration | "Something gave way"; serosanguineous drainage gush |
| Any time (often day 5+) | DVT / PE | Calf swelling; sudden dyspnea and chest pain |
Prioritization and Delegation
Who to see first, and who can do what
Who do I see first?
- Airway, Breathing, Circulation (in cardiac arrest: compressions first, C-A-B).
- Acute and unexpected before chronic and expected.
- Unstable before stable; actual problems before potential ones.
- Maslow: physiological needs → safety → love and belonging → esteem → self-actualization.
- Nursing process: assess before acting (unless the situation clearly needs immediate action).
Ask: "What will kill or harm this patient soonest?" A change in level of consciousness, new chest pain, airway noise, or a sudden drop in BP or SpO₂ beats routine care, teaching and paperwork.
Five rights of delegation (NCSBN)
Right task · right circumstance · right person · right directions and communication · right supervision and evaluation. The RN stays accountable for the outcome.
The RN never delegates
Initial assessment, care planning, evaluation, initial teaching, care of unstable patients, nursing judgment. IV push medications, blood transfusion monitoring, and new admissions stay with the RN.
Who can do what (general guide; state rules and facility policy apply)
| Role | Appropriate | Not appropriate |
|---|---|---|
| RN | Assessment, teaching, care plans, unstable or complex patients, IV meds and blood, admissions and discharges | – |
| LPN/LVN | Stable patients with predictable outcomes; oral, SC, IM meds; dressing changes; tube feedings; data collection; reinforce teaching; urinary catheters | Initial assessment, care planning, new teaching, unstable patients (IV tasks vary by state) |
| Assistive personnel (UAP, CNA) | ADLs, bathing, feeding (no swallowing issues), ambulation, turning, vital signs on stable patients, I&O, weights, specimen collection, bed making, point-of-care glucose (per facility) | Assessment, teaching, medications, judging what a finding means, care of unstable patients |
Disaster triage (START)
| Red: immediate | Life-threatening but survivable with quick care (airway problem, shock, RR >30) |
| Yellow: delayed | Serious but can wait (fractures without shock) |
| Green: minor | "Walking wounded" |
| Black: expectant | Dead or not expected to survive with available resources |
To free beds in a disaster, discharge the most stable patients first.
Handoff: SBAR
Situation (what's happening now) · Background (history, relevant data) · Assessment (what you think the problem is) · Recommendation (what you need). Read back verbal and phone orders.
Legal and Ethical Practice
Principles, consent, privacy, documentation and reporting
Ethical principles
| Autonomy | Respecting the patient's right to decide (including refusal) |
| Beneficence | Doing good |
| Nonmaleficence | Doing no harm |
| Justice | Fair distribution of care |
| Fidelity | Keeping promises |
| Veracity | Telling the truth |
| Accountability | Taking responsibility for your actions |
Legal terms
| Negligence vs. malpractice | Failure to act as a reasonable person would; malpractice is professional negligence |
| Elements of malpractice | Duty, breach of duty, causation, damages (harm) |
| Assault / battery | Threat of touch / unwanted touch (e.g., treating without consent) |
| False imprisonment | Restraining or detaining without legal cause or order |
| Defamation | Slander (spoken) / libel (written) |
Consent and advance directives
- Valid consent: competent adult, informed, voluntary. Minors need a parent or guardian, except emancipated minors and situations allowed by state law (e.g., STI, contraception, pregnancy care).
- In a true emergency, implied consent applies.
- Advance directives: living will (wishes) and durable power of attorney for health care (decision-maker). Ask about them on admission (Patient Self-Determination Act).
- DNR means no CPR, not "no care". POLST: portable medical orders for seriously ill patients.
- Leaving against medical advice: explain risks, notify the provider, have them sign the AMA form if willing, document.
Privacy (HIPAA)
- Share only the minimum necessary, only with people involved in care or authorized by the patient.
- No details by phone unless the caller is verified (e.g., a code or password).
- Never post anything about patients on social media, even without names.
- Patients can see and request copies of their records.
- Log off; don't look up records you don't need (including your own family's).
Documentation
- Facts, objective, timely; quote the patient where useful.
- Errors: follow the electronic correction process (paper: single line, "error", initials). Never delete, erase or use correction fluid.
- Late entries labeled as late.
- Incident reports are for quality improvement: don't mention them in the chart; document only the event and care given.
Mandatory reporting
- Suspected child abuse or neglect, elder or dependent-adult abuse (proof isn't required).
- Certain communicable diseases (to the health department).
- Some injuries (e.g., gunshot wounds), per state law.
- Impaired or unsafe practice by a colleague: report through the chain of command.
Good Samaritan laws protect emergency care given in good faith, within your training, off duty and without payment.
Acute Kidney Injury and Chronic Kidney Disease
KDIGO definitions, causes and nursing care
Acute kidney injury (AKI)
KDIGO: creatinine rises ≥0.3 mg/dL within 48 h, or to ≥1.5× baseline within 7 days, or urine output <0.5 mL/kg/h for 6 h.
| Prerenal | ↓ blood flow: dehydration, bleeding, HF, shock. BUN:creatinine often >20:1 |
| Intrarenal | Kidney tissue damage: acute tubular necrosis (prolonged low flow, nephrotoxins: contrast, aminoglycosides, vancomycin, NSAIDs), glomerulonephritis |
| Postrenal | Obstruction: enlarged prostate, stones, tumors, blocked catheter |
Nursing care in AKI
- Strict I&O, daily weight, urine output hourly if critical.
- Watch for hyperkalemia (peaked T waves), fluid overload, metabolic acidosis.
- Avoid nephrotoxins; adjust drug doses to kidney function; check catheter patency first if urine stops.
- Phases: oliguric → diuretic (watch for dehydration, low K⁺ and Na⁺) → recovery.
Chronic kidney disease (CKD): stages by GFR
| Stage | eGFR (mL/min/1.73 m²) | Meaning |
|---|---|---|
| G1 | ≥90 | Normal GFR with kidney damage (e.g., protein in urine) |
| G2 | 60–89 | Mildly decreased |
| G3a / G3b | 45–59 / 30–44 | Moderately decreased |
| G4 | 15–29 | Severely decreased: prepare for dialysis or transplant |
| G5 | <15 | Kidney failure |
GFR is how much blood the glomeruli filter per minute (not total blood flow). Albuminuria is staged A1–A3 (urine albumin-to-creatinine ratio <30, 30–300, >300 mg/g). Leading causes: diabetes and hypertension.
What goes wrong in CKD
- Anemia (less erythropoietin) → ESAs + iron; hold ESA if Hgb is high (~>11); raises BP and clot risk.
- High phosphate, low calcium → bone disease: phosphate binders with meals, active vitamin D.
- High K⁺, metabolic acidosis, fluid overload, hypertension.
- Uremia: fatigue, nausea, itching, confusion.
Slowing CKD Updated
- BP control; ACE inhibitor or ARB if albuminuria.
- SGLT2 inhibitor (with or without diabetes) for most with eGFR ≥20.
- In type 2 diabetes: finerenone; semaglutide (GLP-1 RA) also protects kidneys.
- Avoid: NSAIDs, magnesium laxatives and antacids, phosphate enemas; caution with contrast and metformin.
- Diet: limit sodium; K⁺ and phosphorus as labs require; protein ~0.8 g/kg before dialysis (higher once on dialysis).
Dialysis and Kidney Transplant
Hemodialysis, peritoneal dialysis and transplant nursing
Hemodialysis access
- AV fistula (preferred: lowest infection risk; takes weeks to months to mature), AV graft, or central catheter.
- Check every shift: feel the thrill (vibration), listen for the bruit (whoosh). Absent → clot: report now.
- No BP, IVs, blood draws, tight sleeves, jewelry or sleeping on the access arm.
- Watch for bleeding after needle removal; signs of infection.
Around hemodialysis
- Weigh before and after; vital signs; labs.
- Hold antihypertensives and dialyzable drugs before dialysis as ordered; give after.
- Hypotension and muscle cramps during treatment (fluid removed too quickly).
- Dialysis disequilibrium syndrome (early sessions): headache, nausea, restlessness, confusion, seizures.
- Bleeding risk (heparin used during dialysis).
Peritoneal dialysis (PD)
- Fluid (dialysate) runs into the abdomen, dwells, then drains out: inflow → dwell → outflow.
- Warm the dialysate (dry heat, never a microwave): reduces cramping.
- Strict aseptic technique with exchanges and catheter care.
- Outflow should be clear, pale yellow, and about equal to or more than inflow.
- Cloudy outflow + abdominal pain + fever = peritonitis: report, send a sample.
- Poor outflow: check for kinks, reposition the patient, check for constipation (full bowel blocks drainage).
- Shortness of breath during dwell: raise the head of bed.
- Dextrose in dialysate → weight gain, high glucose; protein loss → higher-protein diet.
Dialysis diet
- Higher protein (lost in dialysis).
- Limit sodium, potassium, phosphorus; fluid limit (often urine output + ~500–1,000 mL/day on hemodialysis).
- Thirst tips: ice chips (count as fluid), sugar-free hard candy, small cups.
- High-K⁺ foods: bananas, oranges, potatoes, tomatoes, avocados, dried fruit, salt substitutes.
Kidney transplant
- Rejection: fever, ↓ urine output, rising creatinine, weight gain, tenderness over the graft, ↑ BP.
- Lifelong immunosuppressants (tacrolimus, mycophenolate, steroids): take on schedule; drug levels; no grapefruit with tacrolimus/cyclosporine.
- Infection risk: hand hygiene, avoid sick contacts, no live vaccines; skin cancer screening.
- Large urine volumes early: watch fluids and electrolytes.
UTI, Kidney Stones and BPH
Common urinary problems
Urinary tract infection
- Cystitis: burning, frequency, urgency, suprapubic pain, cloudy or foul urine. Older adults: may show only new confusion or falls.
- Pyelonephritis: fever, chills, flank pain, costovertebral angle tenderness, nausea.
- Urinalysis (nitrites, leukocyte esterase) and urine culture before antibiotics.
- Treat: nitrofurantoin, TMP-SMX or fosfomycin for simple cystitis; phenazopyridine for burning (orange urine, ≤2 days).
- Prevent: fluids, void after intercourse, wipe front to back, don't hold urine. Don't treat bacteria in urine without symptoms (except pregnancy and before urologic procedures).
Kidney stones
- Sudden, severe flank pain radiating to the groin, nausea, hematuria. Non-contrast CT.
- Pain control first (NSAIDs such as ketorolac; opioids as needed); tamsulosin helps some ureteral stones pass.
- Strain all urine; send the stone for analysis.
- Fluids so urine output is >2–2.5 L/day.
- Fever with an obstructing stone = emergency (infected, blocked kidney).
- Procedures: lithotripsy (shock waves: bruising, blood in urine), ureteroscopy.
Preventing stones by type
| Stone | Prevention |
|---|---|
| Calcium oxalate (most common) | Keep normal dietary calcium (1,000–1,200 mg/day: low calcium diets make stones more likely). Limit sodium, animal protein and high-oxalate foods (spinach, rhubarb, nuts, chocolate, beets, tea). Thiazides and citrate may be prescribed |
| Uric acid | Limit purines (organ meats, shellfish, red meat, beer); allopurinol; potassium citrate to make urine less acidic |
| Struvite | Linked to UTIs: treat infection |
Benign prostatic hyperplasia (BPH)
- Frequency, nocturia, weak stream, hesitancy, dribbling, retention.
- Alpha-1 blockers (tamsulosin): dizziness, orthostatic hypotension; tell the eye surgeon before cataract surgery.
- 5-alpha reductase inhibitors (finasteride): take 6–12 months to work; pregnant people shouldn't handle crushed or broken tablets.
- Avoid decongestants and anticholinergics (cause retention).
- Prostate cancer screening (PSA) for ages 55–69 is an individual decision.
After TURP: continuous bladder irrigation
- Purpose: flushes clots out of the bladder.
- Titrate the irrigation to keep urine light pink to clear. Bright red with clots → increase flow and notify.
- True urine output = total drainage − irrigant used.
- Bladder spasms are common (antispasmodics); check for clots blocking the catheter.
- Watch for hyponatremia from absorbed irrigation (confusion, nausea, slow pulse).
- After discharge: avoid straining and heavy lifting; fluids; some dribbling is temporary.
Upper GI: GERD, Ulcers and GI Bleeding
Reflux, peptic ulcer disease, bleeding and dumping syndrome
GERD and hiatal hernia
- Heartburn, regurgitation, worse after meals and lying down; chronic cough, hoarseness.
- Lifestyle: raise the head of the bed 6–8 in; small meals; nothing for 2–3 h before bed; lose weight; stop smoking; limit fatty foods, chocolate, peppermint, caffeine, alcohol, spicy or acidic foods if they trigger symptoms.
- PPIs or H2 blockers.
- Long-term: Barrett's esophagus (cancer risk): surveillance endoscopy.
Peptic ulcer disease
- Main causes: H. pylori and NSAIDs.
- Gastric ulcer: pain soon after eating; weight loss. Duodenal ulcer: pain 2–3 h after meals and at night, relieved by food.
- Treat H. pylori (PPI + antibiotics, retest for cure); stop NSAIDs; PPI.
- Perforation: sudden severe pain, rigid board-like abdomen, rebound tenderness, shock → surgical emergency.
GI bleeding
| Hematemesis | Bright red or coffee-ground vomit (upper GI) |
| Melena | Black, tarry stool (upper GI; iron and bismuth also darken stool) |
| Hematochezia | Bright red rectal blood (lower GI, or a massive upper bleed) |
- Two large-bore IVs, fluids, type and crossmatch; transfuse usually if Hgb <7 (higher in heart disease).
- IV PPI; NPO; endoscopy (usually within 24 h).
- Variceal bleeding (cirrhosis): octreotide, antibiotics, endoscopic banding.
- Watch for shock: tachycardia, ↓ BP, restlessness, cool skin, ↓ urine.
- BUN may rise (blood digested in the gut).
Dumping syndrome (after gastric surgery)
- Early (10–30 min after eating): cramping, diarrhea, dizziness, tachycardia, sweating.
- Late (1–3 h): hypoglycemia.
- Prevent: small frequent meals; higher protein and fat, low simple sugars; no fluids with meals (drink 30 min before or after); lie down after eating.
NG tubes
- Measure nose → earlobe → xiphoid; confirm placement by X-ray before first use for feeding or meds.
- Decompression: low intermittent suction; check output color and amount; irrigate per order.
- Watch for fluid and electrolyte loss (metabolic alkalosis, low K⁺).
- Oral care and nares care; keep head up.
Lower GI Disorders
IBD, diverticulitis, appendicitis, bowel obstruction and colorectal screening
Crohn's disease vs. ulcerative colitis
| Crohn's disease | Ulcerative colitis | |
|---|---|---|
| Where | Anywhere mouth to anus (often terminal ileum); skip lesions; full wall thickness | Colon and rectum only; continuous; inner lining |
| Stools | Diarrhea, often not bloody; fatty stools | Bloody diarrhea, many times a day; urgency |
| Complications | Fistulas, strictures, obstruction, malabsorption (B12, iron) | Toxic megacolon, perforation, hemorrhage, colon cancer |
| Surgery | Not curative: disease can recur elsewhere | Removing the colon and rectum is curative |
Treatment: aminosalicylates (mesalamine, mainly UC), steroids for flares only, immunomodulators, biologics (infliximab, adalimumab, vedolizumab, ustekinumab, risankizumab), JAK inhibitors. Screen for TB and hepatitis B before biologics. During flares: low-residue diet, small meals, fluids, avoid trigger foods; TPN if severe.
Diverticulitis
- LLQ pain, fever, change in bowel habits.
- Mild, uncomplicated cases may not need antibiotics; clear liquids → advance as tolerated.
- Prevention: high-fiber diet, fluids, activity. Updated No need to avoid nuts, seeds or popcorn.
- Perforation, abscess → surgery; possible colostomy.
Appendicitis
- Pain starts around the navel, moves to the RLQ (McBurney's point); rebound tenderness, low fever, nausea, loss of appetite.
- No heat to the abdomen and no laxatives or enemas (risk of rupture).
- Sudden relief of pain may mean rupture → peritonitis (rigid abdomen, fever, shock).
- Appendectomy; antibiotics.
Bowel obstruction
- Small bowel: early, frequent vomiting (may smell feculent), cramping, distension.
- Large bowel: marked distension, constipation, late vomiting.
- Bowel sounds high-pitched early, then absent.
- NPO, NG tube to suction, IV fluids, electrolytes; surgery if strangulated (fever, constant pain, tachycardia).
Colorectal cancer screening (USPSTF)
Average risk: ages 45–75. Options: colonoscopy every 10 years · FIT (stool) every year · stool DNA-FIT every 1–3 years · CT colonography or flexible sigmoidoscopy every 5 years. A positive stool test needs a follow-up colonoscopy. Earlier screening for family history or IBD.
Colonoscopy prep: clear liquids the day before; bowel prep until output is clear yellow; avoid red/purple liquids.
Cirrhosis and Hepatitis
Complications of liver disease and the hepatitis viruses
Cirrhosis
Causes: alcohol, MASLD (metabolic dysfunction-associated steatotic liver disease, the 2023 name for NAFLD) Updated, hepatitis B and C.
| Portal hypertension → varices | Can bleed massively. Beta blocker (propranolol, carvedilol) to prevent; banding; avoid straining |
| Ascites | Sodium limit (~2 g/day), spironolactone + furosemide, paracentesis (void first; watch BP; albumin after large volumes); measure girth and weight |
| Hepatic encephalopathy | ↑ ammonia: confusion, asterixis (flapping tremor), sleepiness. Lactulose (2–3 soft stools/day) + rifaximin. Don't restrict protein |
| Bleeding | Low clotting factors and platelets: bleeding precautions |
| Others | Jaundice, itching, spontaneous bacterial peritonitis, kidney failure (hepatorenal) |
Cirrhosis: drugs and diet
- Acetaminophen up to 2 g/day is the preferred pain reliever. Avoid NSAIDs (bleeding, kidney failure).
- Avoid or minimize sedatives (benzodiazepines, opioids): they trigger encephalopathy.
- No alcohol.
- Adequate protein (1.2–1.5 g/kg/day), small frequent meals and a late-evening snack.
- Vaccinate against hepatitis A and B if not immune.
Viral hepatitis
| Virus | Spread | Key points |
|---|---|---|
| A | Fecal-oral (food, water) | Short illness, no chronic form. Vaccine. Hand hygiene; contact precautions if incontinent |
| B | Blood, sex, birth | Can become chronic (liver cancer, cirrhosis). Vaccine. Antivirals (tenofovir, entecavir) for chronic infection |
| C | Blood (injection drug use, past transfusions) | Often silent and chronic. No vaccine, but curable (>95%) with 8–12 weeks of direct-acting antiviral pills. Updated Screen all adults at least once |
| D | Blood | Only with hepatitis B |
| E | Fecal-oral | Dangerous in pregnancy |
Signs of acute hepatitis: fatigue, nausea, RUQ discomfort, dark urine, clay-colored stools, jaundice. Rest; avoid alcohol and liver-toxic drugs.
Pancreatitis and Gallbladder Disease
Acute and chronic pancreatitis, cholecystitis
Acute pancreatitis
- Causes: gallstones, alcohol, very high triglycerides, after ERCP, some drugs.
- Severe epigastric or LUQ pain radiating to the back, worse lying flat; better sitting up and leaning forward.
- Nausea, vomiting, fever, tachycardia.
- Cullen's sign (bruising around the navel), Grey Turner's sign (flank bruising): bleeding, severe disease.
- Labs: lipase ≥3× upper limit; high glucose; low calcium (check Chvostek's and Trousseau's signs).
Treatment Updated
- IV fluids (lactated Ringer's), moderate and goal-directed: too much fluid causes harm.
- Pain control, including opioids.
- Early oral feeding (within 24–72 h, low-fat) once pain and nausea allow. Prolonged NPO to "rest the pancreas" is outdated.
- If unable to eat: tube feeding is preferred over TPN.
- NG tube only for vomiting or ileus. No routine antibiotics.
- Gallstone pancreatitis: cholecystectomy during the same admission.
Chronic pancreatitis
- Ongoing pain, weight loss, fatty stools (steatorrhea), diabetes.
- Pancreatic enzymes with meals and snacks; insulin; stop alcohol and smoking.
- Small, low-fat meals.
Cholecystitis and gallstones
- RUQ pain after fatty meals, radiating to the right shoulder or scapula; Murphy's sign; nausea, fever.
- Blocked bile duct: jaundice, dark urine, clay-colored stools, itching.
- Ultrasound; laparoscopic cholecystectomy; ERCP for duct stones.
- After laparoscopic surgery: shoulder pain from CO₂ gas: walk, warm packs per order.
- Low-fat diet if symptoms persist.
DKA, HHS and Diabetes Care
Hyperglycemic crises (2024 ADA/EASD consensus) and long-term care
DKA vs. HHS
| Diabetic ketoacidosis (DKA) | Hyperosmolar hyperglycemic state (HHS) | |
|---|---|---|
| Who | Mostly type 1; any age; onset hours | Mostly type 2, older adults; onset over days |
| Glucose | ≥200 mg/dL (or known diabetes; can be near-normal with SGLT2 inhibitors) | ≥600 mg/dL |
| Acid–base | pH <7.3 and/or HCO₃⁻ <18 | pH ≥7.3, HCO₃⁻ ≥15 |
| Ketones | High (β-hydroxybutyrate ≥3.0 mmol/L) | Minimal |
| Signs | Kussmaul breathing, fruity breath, abdominal pain, vomiting, dehydration | Severe dehydration, osmolality >300, confusion, seizures, coma |
In DKA, glucose is stuck in the blood: cells can't use it without insulin, so the body burns fat and makes ketones. Common triggers: infection, missed insulin, new diagnosis.
Treatment order
- Fluids first: isotonic (0.9% saline or balanced crystalloid), about 500–1,000 mL/h for the first 2–4 h (smaller boluses in older adults or heart or kidney failure), then adjust.
- Check potassium before insulin. K⁺ <3.5 → replace K⁺ before starting insulin. 3.5–5.0 → add K⁺ to fluids. >5.0 → no K⁺, recheck often.
- Insulin: IV regular insulin infusion (or SC rapid-acting in mild–moderate DKA).
- Add dextrose (5–10%) when glucose falls below ~250 mg/dL, and keep insulin running until the crisis resolves.
- Bicarbonate only if pH <7.0.
- Resolved (DKA): pH ≥7.3, HCO₃⁻ ≥18, ketones low. Give SC basal insulin 1–2 h before stopping the drip.
Monitor
- Glucose every hour; K⁺, Na⁺, phosphate every 2–4 h.
- Cardiac monitor (K⁺ shifts into cells with insulin → hypokalemia).
- Urine output, mental status. Children: cerebral edema (headache, falling LOC): correct slowly.
Long-term diabetes care
- A1C every 3–6 months; dilated eye exam yearly; urine albumin and eGFR yearly; BP and lipids.
- Foot care: inspect daily (mirror), wash and dry well (especially between the toes), moisturize but not between the toes, well-fitting shoes, never barefoot, no heating pads or hot soaks, podiatry for nails if neuropathy.
- Exercise: check glucose first; carry fast carbs; delay exercise if glucose >250 with ketones.
- Continuous glucose monitors are widely used: know how to read trend arrows.
Thyroid and Parathyroid Disorders
Hypo- and hyperthyroidism, crises, and thyroid surgery
| Hypothyroidism (e.g., Hashimoto's) | Hyperthyroidism (e.g., Graves') | |
|---|---|---|
| Signs | Fatigue, cold intolerance, weight gain, constipation, dry skin, hair loss, bradycardia, slow thinking, depression, heavy periods | Anxiety, heat intolerance, weight loss, diarrhea, tachycardia/A-fib, tremor, insomnia, goiter; Graves': bulging eyes (exophthalmos) |
| Labs (primary disease) | TSH high, free T4 low | TSH low, free T4/T3 high |
| Treatment | Levothyroxine (empty stomach, lifelong; start low in older and cardiac patients) | Methimazole (PTU in 1st trimester), beta blockers, radioactive iodine, surgery |
| Crisis | Myxedema coma: hypothermia, bradycardia, hypotension, hypoventilation, low Na⁺ and glucose, coma → IV levothyroxine, steroids, ventilation, passive warming; avoid sedatives | Thyroid storm: high fever, severe tachycardia, delirium, vomiting → beta blocker, PTU or methimazole, then iodine, steroids, cooling with acetaminophen (not aspirin) |
After thyroidectomy
- Airway: semi-Fowler's, support the neck; tracheostomy kit, suction and oxygen at the bedside.
- Bleeding: check the dressing and the back of the neck; a tight feeling or swelling = hematoma (airway risk).
- Hypocalcemia (parathyroid injury): tingling around the mouth and fingers, Chvostek's and Trousseau's signs, laryngospasm → IV calcium gluconate at the bedside.
- Voice: ask the patient to speak every few hours. Hoarseness = laryngeal nerve injury.
- Lifelong levothyroxine after total thyroidectomy.
Parathyroid
- Hyperparathyroidism → high calcium: "stones, bones, groans, moans": kidney stones, bone pain and fractures, abdominal pain and constipation, fatigue, depression, confusion. Fluids, avoid thiazides, cinacalcet, surgery.
- Hypoparathyroidism → low calcium: tingling, muscle cramps, tetany, seizures, long QT. Calcium and active vitamin D; IV calcium gluconate for severe symptoms.
Radioactive iodine (for hyperthyroidism)
Not in pregnancy or breastfeeding. For several days: distance from others (especially children and pregnant people), sleep alone, flush twice, separate laundry and utensils, as instructed. Hypothyroidism often follows: lifelong levothyroxine.
Eye care in Graves'
Raise the head of the bed, artificial tears, sunglasses, tape lids if they don't close at night, stop smoking (worsens eye disease).
Adrenal and Pituitary Disorders
Addison's, Cushing's, pheochromocytoma, SIADH and diabetes insipidus
| Addison's disease (too little cortisol and aldosterone) | Cushing's syndrome (too much cortisol) | |
|---|---|---|
| Signs | Fatigue, weight loss, hypotension, bronze hyperpigmentation, salt craving, nausea | Moon face, buffalo hump, central obesity, thin arms and legs, purple striae, bruising, weakness, mood changes, poor wound healing |
| Labs | ↓ Na⁺, ↑ K⁺, ↓ glucose | ↑ glucose, ↓ K⁺, ↑ Na⁺; hypertension |
| Treatment | Hydrocortisone (larger morning dose) + fludrocortisone; stress dosing during illness; emergency injection kit; medical ID | Most often from steroid medication: taper if possible; otherwise surgery (pituitary or adrenal) or medication |
| Nursing | Fluids, salt intake; never miss doses | Infection prevention, glucose checks, fall and fracture prevention, skin care |
→ IV hydrocortisone (e.g., 100 mg) immediately + IV fluids (saline with dextrose); treat the cause.
Pheochromocytoma
Adrenal tumor releasing adrenaline: episodes of severe hypertension, headache, sweating, palpitations. Don't palpate the abdomen (can trigger a surge). Before surgery: alpha blocker first, then beta blocker. Primary aldosteronism: hypertension + low K⁺; spironolactone or surgery.
SIADH vs. diabetes insipidus
| SIADH (too much ADH) | Diabetes insipidus (too little ADH effect) | |
|---|---|---|
| Water | Retained: weight gain without edema | Lost: huge volumes of urine (3–20 L/day), extreme thirst |
| Serum sodium | Low (dilutional) | High |
| Urine | Concentrated: high specific gravity | Dilute: specific gravity <1.005 |
| Causes | Small cell lung cancer, brain injury, pneumonia, drugs (SSRIs, carbamazepine) | Head injury, pituitary surgery (central); lithium (kidney type) |
| Treatment | Fluid restriction; hypertonic saline (slowly) if severe symptoms; vaptans; seizure precautions; daily weight | Central: desmopressin (watch for low Na⁺, weight gain). Kidney type: thiazide, stop lithium. Replace fluids |
New names (2022): central DI = arginine vasopressin deficiency (AVP-D); nephrogenic DI = AVP resistance (AVP-R). Updated
Addison's: add the hormones back. Cushing's: cushion of fat from too much cortisol.
Neuro Assessment and Increased ICP
Glasgow Coma Scale, pupils, and protecting the brain
Glasgow Coma Scale
| Eye opening | Verbal | Motor |
|---|---|---|
| 4 Spontaneous | 5 Oriented | 6 Obeys commands |
| 3 To voice | 4 Confused | 5 Localizes pain |
| 2 To pain | 3 Inappropriate words | 4 Withdraws from pain |
| 1 None | 2 Sounds only | 3 Abnormal flexion (decorticate) |
| 1 None | 2 Extension (decerebrate) | |
| 1 None |
Total 3–15. ≤8 = severe: protect the airway ("less than 8, intubate"). A drop of 2 or more points is significant.
Signs of increased ICP
- Earliest: change in level of consciousness (restless, confused, sleepy).
- Headache, vomiting (often without nausea), vision changes.
- Pupil changes: one pupil dilating and sluggish = pressure on cranial nerve III: emergency.
- Posturing: decorticate (arms flexed "to the core") → decerebrate (arms extended: worse).
- Late: Cushing's triad: rising systolic BP (wide pulse pressure), bradycardia, irregular breathing.
Normal ICP 5–15 mmHg. CPP = MAP − ICP (target ~60–70).
Lowering ICP: nursing care
- HOB 30°, head and neck midline; avoid neck and extreme hip flexion.
- Avoid Valsalva: stool softeners; no straining, coughing or isometric exercise.
- Cluster care with rest periods; quiet, dim room; limit visitors if stimulation raises ICP.
- Suction only when needed, ≤10 sec, pre-oxygenate.
- Normal temperature (treat fever), normal CO₂ (PaCO₂ 35–45; brief hyperventilation only for impending herniation), oxygenation, glucose control.
- Mannitol or hypertonic saline; sedation; seizure prevention; drain CSF if a ventricular drain is in place.
- Corticosteroids are not used for traumatic brain injury (they raise mortality). Updated Dexamethasone is used for swelling around brain tumors.
Head injury clues
- Epidural hematoma (artery): brief loss of consciousness, a lucid interval, then rapid decline: emergency surgery.
- Subdural hematoma (veins): slower; older adults and people on anticoagulants; can be chronic (weeks).
- Basilar skull fracture: raccoon eyes, Battle's sign (bruising behind the ear), clear fluid from nose or ear (CSF: "halo" on gauze, positive for glucose). No nasal suctioning or NG tube; don't blow the nose.
Pupils and cranial nerves
- PERRLA: pupils equal, round, reactive to light and accommodation.
- Pinpoint pupils: opioids, pontine lesion. Fixed dilated: herniation, anoxia, atropine.
- CN quick checks: gag and swallow (IX, X), facial symmetry (VII), tongue midline (XII), eye movements (III, IV, VI).
Seizures and Meningitis
Seizure types, status epilepticus, and CNS infection
Seizure types
| Focal aware | Patient stays conscious; twitching, odd sensations |
| Focal impaired awareness | Staring, lip smacking, picking at clothes; confused afterwards |
| Generalized tonic-clonic | Stiffening (tonic) then jerking (clonic); possible incontinence, tongue biting; postictal confusion and sleepiness |
| Absence | Brief staring spells (seconds), mostly children |
| Myoclonic / atonic | Sudden jerks / sudden loss of tone ("drop attacks": helmet) |
Triggers: missed medications, sleep loss, alcohol or withdrawal, fever, low glucose or sodium, flashing lights.
Status epilepticus (seizure ≥5 min, or repeated without recovery)
- Airway, oxygen, side-lying, suction; check glucose.
- Benzodiazepine first: IV lorazepam, or IM midazolam (or intranasal/rectal options) if no IV.
- Then a second-line IV drug: levetiracetam, fosphenytoin, or valproate.
- Still seizing: anesthesia and intubation.
Teaching
Take medications on time, never stop suddenly; medical ID; no driving until cleared under state law; don't swim or bathe alone; folic acid if planning pregnancy; seizure diary.
Bacterial meningitis
- Fever, severe headache, stiff neck, light sensitivity, confusion, vomiting.
- Kernig's sign: pain when straightening the knee with the hip flexed. Brudzinski's sign: bending the neck makes hips and knees flex.
- Petechial or purple rash → meningococcal: emergency.
- Lumbar puncture: bacterial = cloudy CSF, high protein, low glucose, high WBCs. Viral = clear, normal glucose.
- Antibiotics immediately after blood cultures: don't delay for imaging or LP. Dexamethasone with or just before the first dose (pneumococcal).
- Droplet precautions until 24 h of effective antibiotics (meningococcal).
- Close contacts get preventive antibiotics.
- Quiet, dark room; HOB 30°; seizure precautions; watch for ↑ICP, SIADH, septic shock, hearing loss.
- Prevention: MenACWY, MenB, pneumococcal and Hib vaccines.
After lumbar puncture
Position side-lying, knees to chest (or sitting leaning forward) during the procedure. Afterwards: encourage fluids; report a headache that's worse when upright (CSF leak). Bed rest afterward is a facility preference, not proven to prevent headache.
Spinal Cord Injury
Level of injury, shock, and autonomic dysreflexia
What the level means
| C1–C4 | Tetraplegia; often ventilator-dependent ("C3, 4, 5 keeps the diaphragm alive") |
| C5–C8 | Tetraplegia with some arm and hand function; weak cough |
| T1–L1 | Paraplegia; arms normal |
| Below L1 | Mixed leg weakness; bowel and bladder problems |
Complete injury = no function below the level. Incomplete = some preserved.
Acute care
- Spinal motion restriction; jaw thrust to open the airway; log-roll.
- Breathing first: watch vital capacity, cough, SpO₂ (especially cervical injuries).
- Spinal shock: temporary loss of all reflexes below the injury (flaccid).
- Neurogenic shock (injury at T6 or above): hypotension + bradycardia, warm dry skin → fluids, vasopressors, atropine.
- High-dose steroids are no longer routine. Updated
- DVT prevention, skin care, bowel and bladder programs, early rehab, emotional support.
Triggers: full bladder (most common: kinked catheter, retention), constipation or impaction, tight clothing, pressure injury, ingrown toenail, sexual activity.
- Sit the patient upright, legs down.
- Loosen tight clothing.
- Check the bladder: unkink or catheterize.
- Check bowel (use anesthetic gel).
- Check BP every 2–5 min; give antihypertensive as ordered if it stays high.
- Notify the provider; teach the patient and family.
Long-term issues
- Pressure injuries: turn often; teach weight shifts in the wheelchair.
- Bladder: intermittent catheterization; UTI risk.
- Bowel program at the same time each day.
- Spasticity (baclofen), orthostatic hypotension, depression, sexuality counseling.
Autonomic dysreflexia = high BP from a hidden trigger below the injury: find and fix it.
Degenerative Neurologic Disorders
MS, myasthenia gravis, Guillain-Barré, Parkinson's and ALS
| Disorder | What happens | Key signs | Treatment and nursing |
|---|---|---|---|
| Multiple sclerosis | Autoimmune loss of myelin in the brain and spinal cord; relapses and remissions | Vision problems (optic neuritis, double vision), numbness, weakness, spasticity, fatigue, bladder problems; worse with heat | Disease-modifying therapies (e.g., ocrelizumab); steroids for relapses; avoid overheating; energy conservation; fall prevention |
| Myasthenia gravis | Antibodies block acetylcholine receptors at the muscle | Weakness that worsens with activity and later in the day; drooping eyelids, double vision, trouble chewing and swallowing | Pyridostigmine (before meals), immunotherapy, thymectomy. Crisis → respiratory failure: airway first. Avoid aminoglycosides, fluoroquinolones, magnesium |
| Guillain-Barré syndrome | Autoimmune attack on peripheral nerves, often after an infection | Ascending weakness (legs → up), lost reflexes, autonomic instability (BP and HR swings) | IVIG or plasma exchange; monitor breathing (vital capacity, ability to cough); most recover over months |
| Parkinson's disease | Loss of dopamine-producing neurons | Resting "pill-rolling" tremor, rigidity, slow movement, shuffling gait, masked face, soft voice, postural instability | Carbidopa-levodopa; fall prevention; swallowing safety; time meds precisely; exercise and PT |
| ALS | Loss of upper and lower motor neurons | Progressive weakness, cramps, twitching, trouble speaking and swallowing; thinking usually intact | Riluzole, edaravone, tofersen (SOD1 type); breathing support; nutrition (feeding tube); advance care planning |
Myasthenic vs. cholinergic crisis
| Myasthenic | Not enough medication or illness/stress: weakness, respiratory failure; HR and BP may rise |
| Cholinergic | Too much pyridostigmine: weakness plus SLUDGE (salivation, tearing, urination, diarrhea, GI cramps, vomiting), bradycardia, small pupils → atropine |
Both can stop breathing: support ventilation first. (The old edrophonium test is no longer used.)
Parkinson's nursing
- Give doses on time (late doses → freezing, falls).
- High-protein meals reduce levodopa absorption: spread protein through the day.
- Upright for meals; thickened liquids if needed; small bites.
- Avoid haloperidol and metoclopramide (worsen symptoms).
- Watch for orthostatic hypotension, constipation, depression, hallucinations.
Guillain-Barré goes up like a "GB ladder" from the feet; watch the breathing as it climbs.
Fractures, Casts and Traction
Neurovascular checks and preventing complications
Fracture basics
- Types: open (skin broken: infection risk), closed, comminuted (fragments), greenstick (children), compression (spine), spiral (twisting: in a non-walking child, consider abuse).
- Signs: pain, deformity, swelling, shortening, crepitus, loss of function.
- First aid: immobilize (splint the joints above and below), don't straighten, cover an open wound with a sterile dressing, elevate if possible, ice.
- Hip fracture: leg shortened and externally rotated; surgery usually within 24–48 h.
Neurovascular checks
Compare with the other side: pain, pallor, pulses, paresthesia (numbness, tingling), paralysis (movement), poikilothermia (temperature), plus capillary refill and swelling. Check often in the first 24–48 h.
Earliest sign: pain out of proportion to the injury, worse with passive stretching, not relieved by opioids; then numbness and tingling, tense swelling. Pallor and pulselessness are late.
Act: notify immediately; loosen dressings or have the cast split; keep the limb at heart level (not elevated, which reduces blood flow); no ice. Treatment: fasciotomy within hours.
Cast care
- Plaster takes 24–72 h to dry: handle with palms, not fingertips; leave uncovered while drying. Fiberglass sets in minutes.
- Elevate above heart level for the first 24–48 h and apply ice (unless compartment syndrome is suspected).
- Keep dry; never push objects inside to scratch (use cool air from a hair dryer).
- Report: increasing pain, numbness, cold or blue fingers or toes, hot spots, drainage, foul smell (infection or pressure injury).
Traction
- Skin traction (e.g., Buck's): short-term; check skin.
- Skeletal traction: pins in bone; pin care per policy (often chlorhexidine); watch for infection.
- Weights hang freely: off the floor and bed; never remove or lift them without an order.
- Keep body alignment; ropes on pulleys; knots away from pulleys.
Fat embolism syndrome
After long-bone or pelvic fractures, usually 24–72 h: sudden shortness of breath and hypoxemia, confusion, and a petechial rash on the chest, armpits, or conjunctiva. Oxygen, supportive care; early fracture fixation helps prevent it.
Other complications
DVT/PE (prophylaxis, early mobility) · osteomyelitis (bone infection: long antibiotic course) · infection of pins and open fractures · delayed healing (smoking, diabetes, poor nutrition).
Arthritis, Joint Replacement and Mobility Aids
OA vs. RA, hip and knee replacement, canes, crutches and walkers
| Osteoarthritis (OA) | Rheumatoid arthritis (RA) | |
|---|---|---|
| Cause | Cartilage wear | Autoimmune inflammation of the joint lining |
| Joints | Weight-bearing joints (hips, knees, spine), often one side | Small joints, symmetric (hands, wrists, feet) |
| Stiffness | Morning stiffness <30 min; pain worse with use | Morning stiffness >1 hour; better with movement |
| Other signs | Bony nodes: Heberden's (end finger joints), Bouchard's (middle joints) | Fatigue, fever, nodules, swan-neck and ulnar deviation deformities; RF and anti-CCP positive |
| Treatment | Exercise, weight loss, acetaminophen, topical or oral NSAIDs, injections, joint replacement | DMARDs early: methotrexate (folic acid, no alcohol, liver and blood tests, birth defects), biologics (TNF inhibitors: TB screening, no live vaccines), JAK inhibitors; short-term steroids |
Total hip replacement
- Follow the surgeon's precautions: they depend on the approach.
- Posterior approach (classic): no hip flexion >90°, no crossing legs (adduction), no turning the leg inward; abduction pillow; raised toilet seat; chair with arms.
- Anterior approach: fewer restrictions (avoid extending and turning the leg out).
- Dislocation: sudden severe pain, shortened or rotated leg, can't move it → notify.
- DVT prophylaxis, early walking, infection signs.
Total knee replacement
- Early physical therapy and walking; work toward full extension and flexion.
- Pain control before PT sessions; ice.
- Don't put a pillow under the knee (causes contracture).
- DVT prophylaxis; watch the incision; neurovascular checks.
Mobility aids
Cane
Held on the strong side (opposite the weak leg). Move the cane and weak leg together. Top at hip level; elbow bent ~15–30°.
Crutches
Top 2–3 finger widths (1–2 in) below the armpit; weight on the hands, not the armpits; elbows bent 20–30°. Gaits: 3-point (non-weight-bearing), 2-point, 4-point, swing-through.
Walker
Lift (or roll) it forward ~6–10 in, step into it with the weak leg first, then the strong leg. Don't use it on stairs.
Osteoporosis
DEXA scan: T-score ≤ −2.5 = osteoporosis (−1 to −2.5 = low bone mass). Calcium and vitamin D, weight-bearing and resistance exercise, fall prevention, no smoking, limit alcohol; medications (see Part 1, Pharmacology).
Anemia and Sickle Cell Disease
Types of anemia, and managing sickle cell crises
| Anemia | Clues | Treatment and teaching |
|---|---|---|
| Iron deficiency | Small, pale cells (microcytic); fatigue, pallor, spoon-shaped nails, pica (craving ice or dirt); often from blood loss or pregnancy | Oral iron on an empty stomach if tolerated, with vitamin C; not with milk, antacids or tea; every-other-day dosing may absorb better. Dark stools and constipation are expected. Liquid iron through a straw (stains teeth). IV iron for intolerance |
| Vitamin B12 (including pernicious anemia) | Large cells (macrocytic); numbness, tingling, poor balance, memory problems, smooth red tongue | B12 injections or high-dose oral B12; lifelong in pernicious anemia (missing intrinsic factor) |
| Folate deficiency | Large cells without nerve symptoms; alcohol use, pregnancy, poor diet | Folic acid; leafy greens, legumes, fortified grains |
| Anemia of CKD | Low erythropoietin | Iron + erythropoiesis-stimulating agents; don't push Hgb too high (stroke, clots) |
| Aplastic anemia | Bone marrow failure: low red cells, white cells and platelets | Infection and bleeding precautions; transfusions; stem cell transplant |
Most stable patients are transfused when Hgb <7 g/dL (often <8 with heart disease or surgery).
Sickle cell disease
Inherited (autosomal recessive). Red cells sickle when stressed → block small vessels and break down early.
Crisis triggers
Dehydration, infection, cold, low oxygen (high altitude), stress, overexertion.
Vaso-occlusive pain crisis
- Treat pain fast (aim within 1 hour of arrival): IV opioids, often by PCA; scheduled, not just "as needed".
- Hydration (oral and IV).
- Oxygen only if SpO₂ is low.
- Warmth: no cold packs (cold causes vessel narrowing).
- Incentive spirometry to prevent acute chest syndrome.
Emergencies
- Acute chest syndrome: chest pain, fever, cough, low SpO₂, new lung infiltrate: leading cause of death.
- Stroke (children: yearly transcranial Doppler screening).
- Splenic sequestration (young children): sudden big spleen, pallor, shock.
- Fever ≥101.3°F (38.5°C), or per protocol: urgent evaluation (no working spleen → sepsis risk).
Long-term Updated
- Hydroxyurea (raises fetal hemoglobin; check blood counts; avoid in pregnancy), L-glutamine, crizanlizumab.
- Voxelotor was withdrawn from the market in 2024.
- Gene therapies (exa-cel, lovo-cel) approved in 2023 for ages ≥12.
- Children: daily penicillin until age 5; pneumococcal and meningococcal vaccines.
Blood Cancers and Bleeding Disorders
Leukemia, lymphoma, myeloma, hemophilia and platelet disorders
Leukemia
- Bone marrow fills with abnormal white cells → infection (few working WBCs), bleeding (low platelets), anemia (fatigue).
- ALL is the most common childhood cancer; AML, CLL and CML mostly in adults.
- Diagnosis: blood counts and bone marrow biopsy (posterior iliac crest; pressure afterward).
- Chemotherapy, targeted drugs, stem cell transplant (watch for graft-vs-host disease: rash, diarrhea, liver changes), CAR-T cell therapy (watch for cytokine release syndrome: fever, low BP; and neurotoxicity).
Lymphoma and myeloma
- Hodgkin lymphoma: painless enlarged lymph node (often neck), Reed-Sternberg cells; good cure rates.
- Non-Hodgkin lymphoma: more common, many types.
- "B symptoms": fever, drenching night sweats, weight loss.
- Multiple myeloma (plasma cells): "CRAB": high Calcium, Renal failure, Anemia, Bone pain and fractures. Fluids, fall precautions, careful moving.
Bleeding disorders
| Condition | Key points |
|---|---|
| Hemophilia A / B | Missing factor VIII (A) or IX (B); X-linked, mostly males. Bleeding into joints (hemarthrosis): factor replacement first, then rest, ice, elevation. Emicizumab prevents bleeds in hemophilia A. No IM injections, aspirin or NSAIDs; soft toothbrush; medical ID |
| Von Willebrand disease | Most common inherited bleeding disorder: nosebleeds, heavy periods. Desmopressin or factor concentrates |
| Immune thrombocytopenia (ITP) | Antibodies destroy platelets: petechiae, bruising. Steroids, IVIG, other drugs |
| Heparin-induced thrombocytopenia (HIT) | Platelets drop >50% 5–10 days after heparin; clots, not bleeding, are the danger. Stop all heparin (including flushes); use argatroban or bivalirudin |
| DIC | Widespread clotting uses up clotting factors → bleeding: ↓ platelets and fibrinogen, ↑ PT/aPTT and D-dimer. Treat the cause; blood products |
Bleeding precautions (low platelets)
Soft toothbrush; electric razor; no IM injections, rectal temperatures or enemas; gentle nose blowing; avoid aspirin and NSAIDs; apply pressure longer after needle sticks; fall prevention; watch urine, stool, gums, skin, and neuro status. Spontaneous bleeding risk rises sharply below ~20,000/mm³.
Oncology Nursing
Chemotherapy and radiation safety, side effects, emergencies and screening
Handling chemotherapy safely
- Two pairs of chemo-tested gloves, impermeable gown, eye and face protection if splashing is possible.
- Closed-system transfer devices; spill kit available; dispose in hazardous waste.
- Body fluids may contain drug for ~48 h: gloves for handling them.
- Extravasation of a vesicant: stop the infusion, leave the catheter in, aspirate, follow the antidote protocol (e.g., dexrazoxane for anthracyclines; warm vs. cold packs depend on the drug), notify.
Side effects and care
- Neutropenia: blood counts lowest (nadir) ~7–14 days after chemo. Fever ≥100.4°F (38°C) = emergency: cultures and antibiotics within 1 hour.
- Low platelets: bleeding precautions.
- Nausea: give antiemetics before chemo (ondansetron, NK1 blockers, dexamethasone, olanzapine).
- Mouth sores: soft brush, saline or baking soda rinses, no alcohol mouthwash, soft bland foods.
- Fatigue (gentle exercise helps), hair loss, taste changes, neuropathy.
- Immunotherapy (checkpoint inhibitors): immune side effects (colitis, pneumonitis, hepatitis, thyroid problems): report diarrhea or cough early.
Radiation therapy
External beam
Patient is not radioactive. Skin: mild soap, lukewarm water, pat dry; don't wash off markings; no lotions, powders or deodorant on the area before treatment unless approved; avoid sun and heat.
Sealed implant (brachytherapy)
Patient emits radiation while it's in place: private room; limit time, keep distance (≥6 ft when possible), use shielding; no pregnant visitors or children. A dislodged implant: long-handled forceps into a lead container: never by hand.
Unsealed (e.g., radioactive iodine)
Body fluids are radioactive for days: flush twice, separate utensils and laundry, distance from others, as instructed.
Oncologic emergencies
| Tumor lysis syndrome | ↑ K⁺, ↑ uric acid, ↑ phosphate, ↓ calcium after treatment starts → hydration, allopurinol or rasburicase, cardiac monitoring |
| Hypercalcemia | Confusion, constipation, thirst → IV fluids, zoledronic acid or denosumab, calcitonin |
| Spinal cord compression | New back pain → weakness, bowel or bladder changes → steroids, imaging, radiation: emergency |
| Superior vena cava syndrome | Swelling of face, neck and arms, distended neck veins, dyspnea → raise HOB |
| Cardiac tamponade, SIADH, sepsis | See relevant pages |
Screening (USPSTF)
| Breast | Mammogram every 2 years, ages 40–74 (2024) |
| Cervical | 21–29: Pap every 3 yr. 30–65: HPV test every 5 yr, co-test every 5 yr, or Pap every 3 yr |
| Colorectal | Ages 45–75 |
| Lung | Yearly low-dose CT, ages 50–80, ≥20 pack-years, smoking now or quit within 15 years |
| Prostate | PSA: individual decision, ages 55–69 |
Immune Disorders
HIV, lupus, anaphylaxis and transplant rejection
HIV
- Spread by blood, sex, and from parent to baby (pregnancy, birth, breastfeeding). Standard precautions are enough in care.
- Testing: 4th-generation antigen/antibody test; viral load; CD4 count.
- AIDS (stage 3): CD4 <200 cells/mm³ or an AIDS-defining infection or cancer.
- Antiretroviral therapy for everyone with HIV, started as soon as possible; daily adherence prevents resistance.
- Undetectable = untransmittable (U=U) by sex.
- PrEP (prevention before exposure): daily pills, or long-acting injections (cabotegravir every 2 months; lenacapavir twice a year, approved 2025). New
- PEP after exposure: start within 72 hours (sooner is better), take for 28 days.
- Needlestick: wash with soap and water, report immediately, get evaluated for PEP.
- Opportunistic infection prevention (e.g., TMP-SMX when CD4 <200); vaccines (no live vaccines if CD4 is low).
- Pregnancy: ART throughout + infant prophylaxis prevents most transmission.
Systemic lupus erythematosus (SLE)
- Autoimmune disease of many organs; mostly women of childbearing age.
- Butterfly rash, sun sensitivity, joint pain, fatigue, fever, mouth sores, kidney disease (lupus nephritis), pleurisy or pericarditis.
- Positive ANA (and more specific antibodies).
- Hydroxychloroquine for nearly everyone (yearly eye exams), steroids for flares, immunosuppressants, belimumab, anifrolumab.
- Sun protection; infection prevention; plan pregnancy when disease is quiet.
Anaphylaxis
- Hives, swelling, wheeze, stridor, low BP, vomiting, sense of doom, within minutes of exposure.
- Epinephrine IM first: 0.3–0.5 mg (1 mg/mL) in adults into the outer thigh; repeat every 5–15 min as needed.
- Lay flat with legs up (sit up if struggling to breathe); oxygen; IV fluids; call for help.
- Antihistamines and steroids are add-ons, not first-line.
- Observe for a second (biphasic) reaction. Teach auto-injector use; nasal epinephrine spray is also available.
- Latex allergy: cross-reacts with banana, avocado, kiwi, chestnut.
Transplant rejection
| Hyperacute | Minutes to hours; graft removed |
| Acute | Days to months: fever, tenderness, falling organ function; treat with more immunosuppression |
| Chronic | Months to years: gradual loss of function |
Lifelong immunosuppression (tacrolimus: drug levels, kidney toxicity, tremor; mycophenolate: birth defects, GI upset; steroids). Infection precautions, no live vaccines, sun protection and skin checks, no grapefruit with tacrolimus or cyclosporine.
Burns
Depth, size, fluid resuscitation and the phases of burn care
Burn depth
| Superficial | Epidermis only; red, painful, no blisters (sunburn); heals in ~1 week |
| Superficial partial-thickness | Into the upper dermis; blisters, moist, pink, very painful; heals in 2–3 weeks |
| Deep partial-thickness | Deeper dermis; mottled red and white, less pain, may need grafting |
| Full-thickness | Whole dermis; white, brown or leathery, painless (nerves destroyed); needs grafting |
Burn size: rule of nines (adult)
| Head and neck | 9% | Each arm | 9% |
| Front of trunk | 18% | Back of trunk | 18% |
| Each leg | 18% | Perineum | 1% |
Children have bigger heads and smaller legs: use the Lund-Browder chart. The patient's own palm (with fingers) ≈ 1% of body surface. Don't count superficial burns in the total.
Emergent phase (first ~24–48 h)
- Airway first: inhalation injury signs: burns to face or neck, singed nasal hair, soot in mouth or sputum, hoarseness, stridor → early intubation.
- Carbon monoxide: pulse oximetry reads falsely normal: check carboxyhemoglobin; give 100% oxygen.
- Capillary leak → fluid shifts out of vessels → hypovolemia, high K⁺ (cell damage), high hematocrit.
- IV opioids for pain (not IM); tetanus; stress-ulcer prophylaxis; NG tube for large burns (ileus).
Adjust to urine output 0.5 mL/kg/h in adults (~30–50 mL/h), 1 mL/kg/h in children <30 kg.
Burn centers now often start lower (2 mL × kg × %TBSA in adults) to avoid over-resuscitation. Know Parkland for exams.
Example: 80 kg, 40% TBSA → 4 × 80 × 40 = 12,800 mL. First 8 h: 6,400 mL (800 mL/h).
Acute and rehab phases
- Fluid moves back (~48–72 h): diuresis, low K⁺.
- Infection is the main threat: strict asepsis; no plants or flowers.
- Wound care, debridement, grafts (keep graft immobile).
- High-calorie, high-protein diet; premedicate before dressing changes.
- Prevent contractures: positioning, splints, range of motion; pressure garments (~23 h/day) for scars; psychosocial support.
Special burns
- Electrical: damage is deeper than it looks: cardiac monitoring (dysrhythmias), muscle breakdown (dark urine: keep urine output higher), compartment syndrome.
- Chemical: brush off dry chemicals, then flush with large amounts of water.
- Circumferential burns: watch circulation and breathing (escharotomy).
- First aid: cool running water (not ice) ~20 min; remove jewelry and clothing; cover with clean dry cloth.
Common Skin Conditions
Infections, infestations, chronic skin disease and skin cancer
| Condition | Key signs | Care |
|---|---|---|
| Cellulitis | Spreading red, warm, tender skin; fever | Mark the border with a pen to track spread; elevate; antibiotics |
| Herpes zoster (shingles) | Painful blisters in a band on one side of the body (one dermatome) | Antivirals within 72 h; pain control. Contagious to people without chickenpox immunity until crusted. Localized, normal immune system, fully covered: standard precautions. Disseminated, or any shingles in an immunocompromised patient: airborne + contact. Shingrix: 2 doses for adults ≥50 (≥19 if immunocompromised) |
| Impetigo | Honey-colored crusts (children) | Topical or oral antibiotics; contact precautions; keep nails short |
| Scabies | Intense itching, worse at night; burrows between fingers and wrists | Permethrin neck down, left on 8–14 h, repeat in 1 week; treat all close contacts at once; wash linens hot or bag for 3+ days. Itching can last weeks |
| Head lice | Itching; nits on hair shafts near the scalp | Pediculicide; nit comb; wash bedding hot; bag items 2 weeks |
| Psoriasis | Thick red plaques with silvery scale (elbows, knees, scalp) | Topical steroids, vitamin D creams, phototherapy, biologics; not contagious |
| Atopic dermatitis (eczema) | Dry, itchy patches; flexures in older children | Moisturize right after bathing; avoid triggers; topical steroids |
Skin cancer
- Basal cell: most common; pearly bump; rarely spreads.
- Squamous cell: scaly, crusted lesion; can spread.
- Melanoma: most deadly. Check moles with ABCDE: Asymmetry, Border irregular, Color varied, Diameter >6 mm, Evolving.
Sun safety
- Broad-spectrum sunscreen SPF 30+; reapply every 2 h and after swimming.
- Shade, hats, sunglasses; avoid midday sun.
- No tanning beds.
- Monthly skin self-checks; extra care with photosensitizing drugs.
Eye and Ear Disorders
Cataracts, glaucoma, retinal problems, hearing and balance
| Condition | Signs | Care |
|---|---|---|
| Cataract | Gradual, painless blurred or cloudy vision; glare; halos | Surgery (lens replacement). After: eye shield at night; avoid bending, heavy lifting, straining and rubbing the eye; eye drops; report sudden pain or vision loss |
| Open-angle glaucoma | Painless, gradual loss of side vision ("tunnel vision") | Lifelong drops: latanoprost (can darken iris), timolol (can slow HR, cause bronchospasm), others. Press the inner corner of the eye 1–2 min after drops |
| Angle-closure glaucoma | Sudden severe eye pain, headache, nausea, red eye, halos, fixed mid-dilated pupil | Emergency: drops and IV meds to lower pressure, then laser surgery. Avoid anticholinergics (atropine, diphenhydramine) in at-risk patients |
| Macular degeneration | Loss of central vision | Dry: AREDS2 vitamins; Wet: anti-VEGF eye injections. Home Amsler grid checks |
| Retinal detachment | Flashes, floaters, a curtain or shadow over vision | Emergency surgery. Afterwards, position as the surgeon orders (e.g., face-down with a gas bubble); no flying or high altitude while gas is present |
Eye emergencies and drops
- Chemical splash: flush immediately with water or saline for at least 15 min, before anything else.
- Penetrating object: don't remove it; protect with a rigid shield (no pressure); keep the patient still.
- Giving drops: pull down the lower lid, drop into the pocket, don't touch the eye; wait ~5 min between different drops; drops before ointments.
Ears and balance
- Hearing loss: conductive (outer/middle ear) vs. sensorineural (inner ear, nerve). Face the person, speak clearly in a lower pitch; don't shout.
- Ear irrigation: body-temperature fluid; adults: pull the outer ear up and back; children <3: down and back. Not if the eardrum may be perforated.
- Ménière's disease: attacks of vertigo, ringing (tinnitus), fullness, hearing loss. Low-sodium diet, limit caffeine and alcohol, meclizine; lie still during attacks; fall precautions.
- Ototoxic drugs: aminoglycosides, loop diuretics (fast IV), cisplatin, high-dose aspirin, vancomycin.
Shock and Sepsis
Types of shock and the Surviving Sepsis Campaign hour-1 bundle
Types of shock
| Type | Cause | Clues | Main treatment |
|---|---|---|---|
| Hypovolemic | Bleeding, dehydration, burns | Tachycardia, cool clammy skin, flat neck veins, ↓ urine | Stop the bleeding; fluids, blood |
| Cardiogenic | Pump failure (MI, HF) | Crackles, JVD, ↓ BP, cool skin | Inotropes, revascularization; careful fluids |
| Septic (distributive) | Infection → vasodilation | Fever or low temp, warm or mottled skin, ↑ lactate | Antibiotics, fluids, norepinephrine |
| Anaphylactic (distributive) | Allergic reaction | Hives, wheeze, swelling | IM epinephrine, fluids |
| Neurogenic (distributive) | Spinal cord injury T6 or above | ↓ BP with bradycardia, warm dry skin | Fluids, vasopressors, atropine |
| Obstructive | Tension pneumothorax, tamponade, massive PE | JVD, ↓ BP; tracheal shift or muffled heart sounds | Relieve the obstruction |
Early shock: restlessness, tachycardia, fast breathing, ↓ urine output, cool skin; BP may still be normal. Hypotension is a late sign.
Sepsis
Sepsis = life-threatening organ dysfunction caused by the body's response to infection. Septic shock = needs vasopressors to keep MAP ≥65 and lactate >2 despite fluids.
Look for: fever or hypothermia, tachycardia, tachypnea, confusion, low BP, mottled skin, low urine output. Older adults may only seem confused or weak.
qSOFA should not be used alone to screen for sepsis. Updated
Hour-1 bundle (Surviving Sepsis Campaign)
- Measure lactate; remeasure if >2 mmol/L.
- Blood cultures before antibiotics (without delaying them).
- Broad-spectrum antibiotics: within 1 hour for septic shock or probable sepsis.
- 30 mL/kg crystalloid (balanced solutions such as LR preferred) for hypotension or lactate ≥4.
- Norepinephrine if MAP stays <65 during or after fluids.
Then: source control, urine output ≥0.5 mL/kg/h, glucose 140–180, reassess fluid status often.
Therapeutic Communication
What helps, what blocks, and defense mechanisms
Therapeutic techniques
| Open-ended questions | "What has been on your mind today?" |
| Broad openings | "Where would you like to start?" |
| Restating / reflecting | "You feel angry that no one visits." |
| Clarifying | "I'm not sure I follow. Can you tell me more?" |
| Focusing | "Let's talk more about the argument." |
| Offering self | "I'll sit with you for a while." |
| Silence | Gives time to think and feel |
| Presenting reality | "I don't hear voices, but I can see you're frightened." |
| Summarizing | "Today we talked about…" |
Communication blocks (avoid)
| False reassurance | "Don't worry, everything will be fine." |
| Asking "why" | "Why did you do that?" (sounds judgmental) |
| Giving advice | "If I were you, I'd…" |
| Approval / disapproval | "That's good." / "You shouldn't feel that way." |
| Changing the subject | Moving away from the patient's feelings |
| Minimizing | "Everyone feels that way sometimes." |
| Defending | "The doctor is very good; she wouldn't do that." |
| Closed or yes/no questions | Use only when you need specific facts (e.g., suicide risk) |
On exams, the best answer usually acknowledges feelings and invites the patient to say more.
The nurse–patient relationship (Peplau)
- Orientation: build trust, set the contract (time, purpose), explain confidentiality and its limits (danger to self or others), plan for the ending.
- Working: explore problems, practice coping skills.
- Termination: review progress, discuss feelings about ending. Begin preparing from day one.
- Boundaries: no personal relationships, gifts, or sharing personal problems; therapeutic self-disclosure only if it helps the patient.
Defense mechanisms
| Denial | Refusing to accept reality |
| Projection | Blaming others for your own feelings |
| Displacement | Taking feelings out on a safer target |
| Rationalization | Giving acceptable excuses |
| Regression | Returning to earlier behavior |
| Repression / suppression | Unconscious / conscious pushing away of thoughts |
| Reaction formation | Acting the opposite of what you feel |
| Sublimation | Channeling impulses into acceptable activity (healthy) |
| Intellectualization | Focusing on facts to avoid feelings |
Anxiety, OCD and Trauma Disorders
Levels of anxiety and nursing care
Levels of anxiety
| Level | What you see | Nursing approach |
|---|---|---|
| Mild | Alert, sharper focus; learning is easy | Teach, problem-solve |
| Moderate | Narrower focus; can learn with direction; some physical symptoms | Guide; help focus |
| Severe | Very narrow focus; can't learn or solve problems; headache, nausea, trembling | Calm, simple directions; reduce stimuli |
| Panic | Can't think or communicate clearly; may be a danger to self | Stay with the patient, short simple sentences, quiet room, safety, PRN medication. Teach later |
Anxiety disorders
- Generalized anxiety disorder: excessive worry on most days for ≥6 months. CBT; SSRIs/SNRIs; buspirone.
- Panic disorder: sudden attacks peaking within minutes (chest pain, pounding heart, fear of dying) + worry about future attacks. Rule out medical causes first. CBT, SSRIs; benzodiazepines short-term only.
- Phobias and social anxiety: gradual exposure therapy.
- Coping: slow breathing, grounding, muscle relaxation, exercise, limiting caffeine.
Obsessive-compulsive disorder
- Obsessions (intrusive thoughts) → compulsions (rituals) that reduce anxiety for a while.
- Don't stop rituals abruptly at first (anxiety will spike): allow time, build a schedule, then gradually limit.
- Exposure and response prevention (therapy); SSRIs (often higher doses), clomipramine.
- Watch skin (handwashing), nutrition, sleep.
PTSD
- After trauma, lasting >1 month: intrusions (flashbacks, nightmares), avoidance, negative mood and thoughts, hyperarousal (startle, irritability, poor sleep). (3 days–1 month = acute stress disorder.)
- Trauma-focused therapy (prolonged exposure, cognitive processing, EMDR); SSRIs (sertraline, paroxetine) or venlafaxine.
- Screen for substance use and suicide risk.
Trauma-informed care
Assume anyone may have trauma history: explain before touching, offer choices and control, provide privacy, avoid re-traumatizing procedures and restraints, stay calm and predictable.
Somatic and functional disorders
Somatic symptom disorder: real distress focused on physical symptoms. Functional neurological disorder (formerly "conversion disorder"): genuine neurologic symptoms (weakness, seizures) without structural disease. The patient isn't faking: acknowledge symptoms, focus on function, avoid unneeded tests.
Depression and Suicide Prevention
Recognizing depression, treatment options, and assessing suicide risk
Major depressive disorder
≥5 symptoms for ≥2 weeks, including depressed mood or loss of interest:
Screen with PHQ-9. Rule out thyroid disease, anemia, medications, substance use. Older adults may show memory problems or physical complaints.
Treatment
- Psychotherapy (CBT and others) + antidepressants (4–6 weeks for full effect).
- ECT: severe, psychotic or treatment-resistant depression, or high suicide risk. Consent; NPO; anesthesia and a muscle relaxant. Afterwards: brief confusion, headache, short-term memory loss; reorient, safety.
- Esketamine nasal spray (treatment-resistant): observe ≥2 h in a certified setting (dissociation, sedation, ↑ BP); no driving that day.
- Transcranial magnetic stimulation; bright light therapy (seasonal pattern).
- Postpartum depression: zuranolone (oral, 14 days). Brexanolone IV was withdrawn from the US market in 2025. Updated
Suicide risk
Ask directly
"Are you thinking about killing yourself?" Asking does not put the idea in someone's head. Then: plan? method? access (especially firearms)? timing? intent? Use a tool such as the Columbia scale (C-SSRS).
Risk factors
Previous attempt (strongest), a specific plan with access to means, depression, substance use, men, older adults, LGBTQ+ youth, chronic pain or illness, recent loss, isolation, recent psychiatric discharge.
Warning signs
Giving away possessions, saying goodbye, writing a will, sudden calm or improvement after severe depression (may have decided on a plan, or now has energy to act).
Nursing actions
- High risk: 1:1 continuous observation, within arm's reach as ordered.
- Remove dangerous items (belts, cords, sharps, plastic bags, glass); search belongings per policy.
- Check that oral medications are swallowed (no "cheeking").
- Safety plan together: warning signs, coping steps, people to contact, removing access to means. No-suicide contracts are not effective: don't rely on them. Updated
- Crisis line: call or text 988 (Suicide & Crisis Lifeline).
Bipolar Disorder
Mania, hypomania and depression
Types
| Bipolar I | At least one manic episode (≥7 days, or any length if hospitalized); depression common |
| Bipolar II | Hypomania (≥4 days, no psychosis, no hospitalization) + major depression |
| Cyclothymia | Milder ups and downs for ≥2 years |
Signs of mania
Elevated or irritable mood, grandiosity, little need for sleep, pressured speech, flight of ideas, distractibility, hyperactivity, risky behavior (spending, sex, driving), possible psychosis.
Nursing care in mania
- Safety first (exhaustion, injury, aggression).
- Low-stimulation environment: quiet room, few visitors, avoid group and competitive activities.
- Calm, firm, consistent limits; short, simple statements; don't argue or debate.
- High-calorie finger foods and fluids they can eat while moving (sandwiches, shakes).
- Channel energy into solitary physical activity (walking, writing).
- Promote rest and sleep; monitor weight, intake, hydration.
Medications
- Lithium (level 0.6–1.2 mEq/L; see Part 1 for toxicity and teaching).
- Valproate, carbamazepine; lamotrigine (prevents depressive episodes).
- Second-generation antipsychotics (quetiapine, olanzapine, aripiprazole, lurasidone, cariprazine).
- Antidepressants alone can trigger mania: used only with a mood stabilizer, if at all.
Teaching
- Take medication even when feeling well (stopping is the top cause of relapse).
- Regular sleep schedule: sleep loss can trigger mania.
- Learn early warning signs (less sleep, racing thoughts, spending).
- Avoid alcohol and drugs; family education; support groups.
Schizophrenia and Psychosis
Symptoms, responding to hallucinations and delusions, and treatment
Symptoms
- Positive (added): hallucinations (usually voices), delusions, disorganized speech and behavior.
- Negative (taken away): flat affect, little speech (alogia), low motivation (avolition), no pleasure (anhedonia), social withdrawal.
- Cognitive: poor attention, memory and planning.
- Duration ≥6 months (with ≥1 month of active symptoms).
Disorganized speech
Loose associations, word salad, clang associations (rhyming), neologisms (made-up words), echolalia (repeating), concrete thinking.
Delusions
| Persecutory | "They're poisoning me." (offer sealed or packaged food) |
| Grandiose | "I'm the president's advisor." |
| Referential | "The TV is sending me messages." |
| Somatic | "My organs are rotting." |
Don't argue or try to prove it wrong, and don't pretend to agree. Respond to the feeling, focus on reality and present activities, build trust.
Responding to hallucinations
- Watch for cues: looking around, talking or laughing to no one, tilting the head as if listening.
- Ask what the voices are saying: command hallucinations telling the person to harm themselves or others are an emergency for safety.
- Present reality without arguing: "I don't hear the voices, but I can see they're upsetting you."
- Focus on what's real right now; engage in a simple activity; distraction (music, conversation).
- Reduce noise and stimulation.
- Teach coping: humming, talking back to voices in a firm way, telling staff.
Treatment
- Antipsychotics (see Part 1): adherence is key; long-acting injections help.
- Clozapine for treatment-resistant illness and suicidal behavior (ANC monitoring).
- Metabolic monitoring (weight, glucose, lipids).
- Family psychoeducation, social skills training, supported employment, case management.
Related conditions
- Schizoaffective: psychosis + major mood episodes.
- Delusional disorder: fixed delusions, otherwise functioning.
- Brief psychotic disorder: ≥1 day but <1 month, with full return to baseline.
- Catatonia: immobility, mutism, posturing → lorazepam, ECT; watch nutrition and skin.
Substance Use and Withdrawal
Alcohol, opioids, stimulants and nicotine
Alcohol withdrawal timeline (after the last drink)
| Time | What happens |
|---|---|
| 6–24 h | Tremor, anxiety, sweating, nausea, insomnia, tachycardia and hypertension |
| 12–48 h | Hallucinations (usually with clear consciousness) |
| 6–48 h | Seizures (peak ~24 h) |
| 48–96 h | Delirium tremens: confusion, hallucinations, fever, severe autonomic instability. Can be fatal |
Use CIWA-Ar to score severity; give benzodiazepines (chlordiazepoxide, diazepam, or lorazepam in liver disease) per protocol. Thiamine before glucose (prevents Wernicke's encephalopathy: confusion, ataxia, eye movement problems → Korsakoff: memory loss, confabulation). Seizure precautions; quiet, well-lit room; fluids and electrolytes (Mg²⁺, K⁺).
Alcohol use disorder: long term
- Naltrexone (reduces cravings; not with opioids; liver tests).
- Acamprosate (start after withdrawal; adjust for kidneys).
- Disulfiram: any alcohol (including mouthwash, cough syrup, some sauces) → flushing, vomiting, low BP. Only for motivated patients.
- Mutual support (AA), motivational interviewing; screen with AUDIT; SBIRT.
Opioids
- Overdose: pinpoint pupils, slow breathing, unresponsive → naloxone (available over the counter), rescue breaths/CPR. Fentanyl may need repeat doses; naloxone is still given when xylazine may be present (xylazine also causes sedation and wounds).
- Withdrawal (rarely fatal in adults): yawning, runny nose, tearing, dilated pupils, gooseflesh, cramps, diarrhea, vomiting, anxiety. Score with COWS.
- Medications for opioid use disorder: buprenorphine (start once in withdrawal, or it triggers sudden withdrawal; any DEA-registered prescriber since 2023), methadone (clinic; QT), naltrexone (after 7–10 days opioid-free).
Stimulants (cocaine, methamphetamine)
Intoxication: high BP and HR, hyperthermia, chest pain (MI), paranoia, agitation, seizures → benzodiazepines, cooling. Withdrawal ("crash"): exhaustion, oversleeping, hunger, depression and suicide risk, cravings.
Cannabis
Heavy use can cause cannabinoid hyperemesis syndrome: cyclic vomiting relieved by hot showers.
Nicotine
Combine counseling with medication: varenicline (most effective), nicotine replacement (patch + short-acting form), bupropion. Ask every patient about tobacco and vaping.
Eating and Personality Disorders
Medical risks in eating disorders, and approaches for personality disorders
| Anorexia nervosa | Bulimia nervosa | Binge-eating disorder | |
|---|---|---|---|
| Pattern | Restriction, low weight, intense fear of weight gain, distorted body image | Binges + purging (vomiting, laxatives, exercise); often normal weight | Binges without purging; distress, shame |
| Physical signs | Bradycardia, hypotension, low temperature, lanugo, missed periods, bone loss, low K⁺ | Low K⁺, metabolic alkalosis, dental erosion, swollen parotid glands, knuckle calluses (Russell's sign), dysrhythmias | Weight gain, metabolic problems |
| Medications | No approved drug; treat nutrition first | Fluoxetine (FDA-approved). Bupropion is contraindicated (seizures) | Lisdexamfetamine (FDA-approved); CBT |
Nursing in eating disorders
- Refeeding syndrome: as feeding restarts, phosphate, K⁺ and Mg²⁺ can crash → heart failure, dysrhythmias. Start slowly; check electrolytes daily at first.
- Supervise meals and observe for ~1 hour afterward (purging); bathroom access supervised as ordered.
- Weigh at the same time, same scale, in a gown, often with the patient facing away.
- Focus on feelings and control issues, not food; consistent team approach; family-based therapy for teens.
- Cardiac monitoring if electrolytes are abnormal.
Personality disorder clusters
| A: odd, eccentric | Paranoid, schizoid, schizotypal |
| B: dramatic, emotional | Antisocial, borderline, histrionic, narcissistic |
| C: anxious, fearful | Avoidant, dependent, obsessive-compulsive personality |
Borderline personality disorder
Unstable relationships and mood, fear of abandonment, impulsivity, self-harm, splitting (people are all good or all bad). DBT is the main therapy. Safety first; clear, consistent limits; the whole team uses the same approach (prevents splitting).
Antisocial personality disorder
Disregard for others' rights, manipulation, lack of remorse, rule-breaking. Set firm, consistent limits with clear consequences; don't accept flattery or bargaining; focus on behavior, not explanations.
Crisis, Aggression, Abuse and Legal Issues
Safety, patient rights and reporting
Preventing and managing aggression
- Early signs: pacing, clenched fists, loud voice, staring, threats.
- De-escalate: calm low voice, respect personal space, open posture, offer choices, listen, reduce stimuli.
- Your safety: keep a clear path to the door; don't turn your back; get help early.
- PRN medication offered voluntarily first.
- Seclusion or restraint only for imminent danger when other steps fail: order required; violent-behavior orders last up to 4 h (adults), 2 h (ages 9–17), 1 h (under 9); face-to-face evaluation within 1 h; continuous monitoring.
Admission and patient rights
- Voluntary: may request discharge (may be held briefly for evaluation, per state law).
- Involuntary: danger to self or others, or gravely disabled; time limits and court review per state law.
- Patients keep their rights: to communicate, to have visitors, privacy, the least restrictive care, and to refuse treatment (except in emergencies or by court order). Commitment doesn't mean legal incompetence.
- Duty to warn (Tarasoff): credible threats against an identifiable person must be reported per policy.
Abuse and violence
Intimate partner violence
- Ask privately, without the partner present; use a professional interpreter, not family.
- Cycle: tension building → violent incident → "honeymoon" (apology, calm).
- Safety planning; document injuries with photos, body maps and the patient's own words; give resources. Reporting rules for adults vary by state.
Sexual assault
- Ideally, don't shower, change, or urinate before the exam (evidence).
- Forensic nurse (SANE) exam; emergency contraception; STI prophylaxis; HIV PEP within 72 h; emotional support.
Child abuse: red flags (mandatory report)
- Injuries that don't match the story or developmental stage; delay in seeking care.
- Bruises on a baby who isn't yet cruising; patterned bruises; bruises on ears, neck, torso.
- Spiral fractures, multiple fractures at different stages; immersion burns (glove or stocking pattern).
Older adult abuse (mandatory report)
Unexplained injuries, poor hygiene, missing money or possessions, fear of a caregiver, untreated problems.
Human trafficking signs: someone else speaks for the patient, holds their ID, inconsistent stories.
Crisis intervention
A crisis is short-term (usually resolves within 4–6 weeks). Be directive, focus on the immediate problem and safety, mobilize supports and coping skills, then plan follow-up.
Grief
Kübler-Ross stages (denial, anger, bargaining, depression, acceptance) don't happen in a fixed order. Prolonged grief disorder (new diagnosis): intense grief lasting ≥12 months (≥6 months in children) that disrupts life.
Delirium, Dementia and Neurodevelopmental Disorders
Telling them apart, and caring for cognition
| Delirium | Dementia | Depression | |
|---|---|---|---|
| Onset | Sudden (hours to days) | Gradual (months to years) | Weeks to months |
| Course | Fluctuates, often worse at night | Slowly progressive | Can improve with treatment |
| Attention | Impaired | Normal early | Poor effort ("I don't know") |
| Reversible? | Usually, if the cause is treated | No | Yes |
Delirium is a medical emergency. Screen with the CAM (Confusion Assessment Method).
Delirium: find the cause
- Infection (UTI, pneumonia), medications (anticholinergics, benzodiazepines, opioids), dehydration, low oxygen, pain, urinary retention, constipation, sleep loss, alcohol withdrawal, electrolyte imbalance.
- Prevent and manage: reorientation, glasses and hearing aids, day–night routine, early mobility, family presence, hydration, avoid restraints and benzodiazepines (except alcohol withdrawal).
- Antipsychotics only for severe agitation or danger, short-term.
Dementia care (e.g., Alzheimer's)
- Consistent routine and caregivers; simple one-step instructions; limited choices.
- Don't argue or "quiz"; validate feelings and redirect.
- Wandering: door alarms, ID bracelet, secure unit. Sundowning: light during the day, activity, calm evenings.
- Label rooms; remove hazards; supervise meals and medications.
- Support caregivers (respite, resources).
- Antipsychotics carry a boxed warning: higher risk of death in older adults with dementia.
ADHD
Inattention and/or hyperactivity-impulsivity starting before age 12, in 2 or more settings (home, school). Behavior therapy (first for preschoolers), classroom supports, stimulants or non-stimulants (see Part 1). Consistent rules, short instructions, praise.
Autism spectrum disorder
Differences in social communication + restricted, repetitive behaviors or interests. Screen at 18 and 24 months (M-CHAT). In the hospital: keep routines, warn ahead of changes, reduce noise and light, use visual supports, involve parents, minimize waiting.
Conversions and Rounding
The numbers you need memorized, and three ways to set up any problem
Metric
| 1 kg | = 1,000 g |
| 1 g | = 1,000 mg |
| 1 mg | = 1,000 mcg |
| 1 L | = 1,000 mL |
| 1 mL | = 1 cc (write "mL", not "cc") |
Moving down a step (bigger unit → smaller unit): × 1,000. Moving up: ÷ 1,000.
Household and weight
| 1 kg | = 2.2 lb |
| 1 lb | = 16 oz |
| 1 in | = 2.54 cm |
| 1 tsp | = 5 mL |
| 1 tbsp | = 15 mL (3 tsp) |
| 1 fl oz | = 30 mL |
| 1 cup | = 240 mL (8 oz) |
Temperature
°F = (°C × 9/5) + 32
°C = (°F − 32) × 5/9
Check yourself: 37°C = 98.6°F; 38°C = 100.4°F.
Rounding rules (common exam rules)
- Round only the final answer, not each step.
- Volumes >1 mL: nearest tenth (2.46 → 2.5 mL).
- Volumes <1 mL: nearest hundredth (0.756 → 0.76 mL): use a 1 mL syringe.
- Tablets: whole, or half only if scored.
- Drops per minute: whole number. Weight in kg: nearest tenth.
- Always a leading zero (0.5 mg); never a trailing zero (5 mg, not 5.0 mg).
- Follow any rounding instruction in the question.
Three ways to set up a problem
Example: order amoxicillin 500 mg; available 250 mg per 5 mL.
Formula
Desired ÷ Have × Quantity
500 ÷ 250 × 5 mL = 10 mL
Ratio–proportion
250 mg : 5 mL = 500 mg : x mL
250x = 2,500 → x = 10 mL
Dimensional analysis
500 mg × (5 mL ÷ 250 mg) = 10 mL
Units you don't want cancel out.
Pick one method and use it every time. Check the units first: convert the order and the supply to the same unit before calculating.
Practice
- 154 lb = ___ kg
- 0.25 mg = ___ mcg
- 38.5°C = ___ °F
- 102.2°F = ___ °C
- 2 tbsp = ___ mL
Answers
- 154 ÷ 2.2 = 70 kg
- 0.25 × 1,000 = 250 mcg
- 38.5 × 9/5 + 32 = 101.3°F
- (102.2 − 32) × 5/9 = 39°C
- 2 × 15 = 30 mL
Oral and Injectable Doses
Tablets, liquids, injections and weight-based doses
Worked examples
| Order | Available | Setup | Answer |
|---|---|---|---|
| Metoprolol 50 mg PO | 25 mg tablets | 50 ÷ 25 × 1 | 2 tablets |
| Levothyroxine 0.1 mg PO | 50 mcg tablets | 0.1 mg = 100 mcg; 100 ÷ 50 | 2 tablets |
| Amoxicillin 500 mg PO | 250 mg/5 mL | 500 ÷ 250 × 5 | 10 mL |
| Heparin 5,000 units SC | 10,000 units/mL | 5,000 ÷ 10,000 × 1 | 0.5 mL |
| Morphine 3 mg IV | 4 mg/mL | 3 ÷ 4 × 1 | 0.75 mL |
| Furosemide 40 mg IV | 10 mg/mL | 40 ÷ 10 × 1 | 4 mL |
| Enoxaparin 1 mg/kg SC, patient 80 kg | 100 mg/mL | 80 mg ÷ 100 × 1 | 0.8 mL |
Weight-based doses: steps
- Convert weight to kg (lb ÷ 2.2).
- Multiply by the ordered mg/kg → dose.
- Check whether the order is per dose or per day (divide daily doses by the number of doses).
- Convert the dose to volume or tablets.
Example: vancomycin 15 mg/kg IV, patient 154 lb → 70 kg × 15 = 1,050 mg.
Reconstituting powders
- Read the label: which diluent and how much.
- Note the resulting concentration (e.g., "adding 4.8 mL gives 100 mg/mL").
- Label multi-dose vials with date, time, concentration and your initials.
Example: vial makes 100 mg/mL; order 250 mg → 250 ÷ 100 = 2.5 mL.
Injection basics
| Route | Angle | Needle (adult, typical) | Notes |
|---|---|---|---|
| Intradermal | 10–15° | 25–27 G, ⅜–⅝ in | Forms a bleb (TB skin test); don't massage |
| Subcutaneous | 45–90° | 25–30 G, ⅜–⅝ in | 45° if little fat; insulin and heparin: don't massage; don't aspirate |
| Intramuscular | 90° | 22–25 G, 1–1½ in | Ventrogluteal preferred site for larger volumes (up to ~3 mL); deltoid ≤1 mL; vastus lateralis for infants |
Z-track (irritating drugs): pull skin aside, inject, wait 10 sec, release. Insulin: use a U-100 insulin syringe; dose in units (no calculation of mL needed).
IV Flow Rates and Infusions
mL/h, drops per minute, infusion times and dose-based drips
Formulas
| Pump rate | mL/h = total mL ÷ hours |
| Gravity drip | gtt/min = (mL × drop factor) ÷ minutes |
| Infusion time | hours = total mL ÷ mL/h |
| Dose-based | mL/h = dose per hour ÷ concentration |
Drop factors: macrodrip 10, 15 or 20 gtt/mL; microdrip 60 gtt/mL (with microdrip, gtt/min = mL/h).
Concentration
Concentration = amount of drug ÷ volume of the bag.
- Heparin 25,000 units in 250 mL = 100 units/mL.
- Heparin 25,000 units in 500 mL = 50 units/mL.
- Dopamine 400 mg in 250 mL = 1.6 mg/mL = 1,600 mcg/mL.
Worked examples
| Problem | Setup | Answer |
|---|---|---|
| 1,000 mL NS over 8 h (pump) | 1,000 ÷ 8 | 125 mL/h |
| 1,000 mL over 8 h, drop factor 15 | (1,000 × 15) ÷ 480 = 31.25 | 31 gtt/min |
| 500 mL over 4 h, drop factor 20 | (500 × 20) ÷ 240 = 41.67 | 42 gtt/min |
| Antibiotic 100 mL over 30 min (pump) | 100 ÷ 0.5 h | 200 mL/h |
| 1,000 mL at 125 mL/h, started 0800 | 1,000 ÷ 125 = 8 h | Finishes 1600 |
| Heparin 1,000 units/h; bag 25,000 units/250 mL | 1,000 ÷ 100 units/mL | 10 mL/h |
| Pump at 20 mL/h; heparin 25,000 units/500 mL. Dose? | 20 mL/h × 50 units/mL | 1,000 units/h |
| Dopamine 5 mcg/kg/min, 80 kg; bag 400 mg/250 mL | 5 × 80 = 400 mcg/min × 60 = 24,000 mcg/h ÷ 1,600 mcg/mL | 15 mL/h |
| KCl 20 mEq in 100 mL over 2 h | 100 ÷ 2; 20 ÷ 2 | 50 mL/h (10 mEq/h) |
Weight-based heparin (example protocol)
Patient 80 kg. Bolus 80 units/kg = 6,400 units. Infusion 18 units/kg/h = 1,440 units/h. Bag 100 units/mL → 1,440 ÷ 100 = 14.4 mL/h. Then adjust by aPTT or anti-Xa per your facility's protocol.
Check your answer
- Does it make sense? A maintenance IV is usually 75–150 mL/h in adults.
- Minutes vs. hours is the most common mistake in drip problems (× 60 to go from per minute to per hour).
- mcg vs. mg is the second most common: convert first.
Pediatric Doses and Other Calculations
Safe dose ranges, body surface area, maintenance fluids and intake and output
Is the ordered dose safe? (4 steps)
- Weight in kg.
- Calculate the safe range from the reference (mg/kg/day or mg/kg/dose).
- Calculate what the order gives (per dose or per day: compare like with like).
- Inside the range → calculate the volume. Outside → hold the dose and call the prescriber.
Worked examples
| Problem | Working | Result |
|---|---|---|
| Amoxicillin 200 mg PO every 12 h. Child 22 lb. Safe: 25–45 mg/kg/day. Supply 400 mg/5 mL | 22 ÷ 2.2 = 10 kg → safe 250–450 mg/day. Order = 400 mg/day → safe. 200 ÷ 400 × 5 | 2.5 mL per dose |
| Acetaminophen 240 mg PO every 6 h. Child 18 kg. Max 15 mg/kg/dose. Supply 160 mg/5 mL | Max 270 mg/dose → safe. 240 ÷ 160 × 5 | 7.5 mL |
| Cefazolin 500 mg IV every 8 h. Child 12 kg. Safe: 25–100 mg/kg/day | Safe 300–1,200 mg/day. Order = 1,500 mg/day | Unsafe: hold and clarify |
Body surface area (Mosteller)
BSA (m²) = √(height cm × weight kg ÷ 3,600)
Example: 150 cm, 45 kg → √(6,750 ÷ 3,600) = √1.875 = 1.37 m². Used for chemotherapy and some pediatric doses.
Maintenance fluids (Holliday-Segar)
100 mL/kg/day (first 10 kg) + 50 mL/kg/day (next 10 kg) + 20 mL/kg/day (each kg above 20).
Example: 15 kg → 1,000 + 250 = 1,250 mL/day ≈ 52 mL/h.
Intake and output
- Intake: oral fluids, IV fluids and flushes, tube feeds and water flushes, irrigant not returned, and foods liquid at room temperature (gelatin, ice cream, popsicles, soup). Ice chips ≈ half their volume as water.
- Output: urine, emesis, diarrhea, drains, NG output, wound drainage.
Example: milk 240 mL + juice 120 mL + IV 100 mL/h × 8 h (800 mL) + ice chips 200 mL (= 100 mL) → intake 1,260 mL. Urine 650 + 400 mL + emesis 150 mL → output 1,200 mL.