The nurse is caring for a patient in the medical-surgical unit. Review the patient's chart and decide which order the nurse must implement first

Administer potassium 40 mEq PO

Administer 1 GM of acetaminophen PO

Administer pantoprazole 40 mg IV

Administer ceftriaxone 2 gm IV

Administer 3.5 liters of 0.9% sodium chloride IV