The nurse is caring for a client. Client reports sudden onset of dyspnea and chest discomfort. Client transferred back to bed. Client is awake and orientated x4. Client states, "I just feel like something is really wrong." Client is tachypneic and appears in distress. Crackles heard in bilateral lungs. S3 and S4 heart sounds noted. Bilateral pedal pulses are +1. Surgical site is dressed, dry, and intact. Temperature 38.9° C (102° F) Heart rate 112/min Respiratory rate 34/min Blood pressure 144/72 mm Hg Oxygen saturation 92% on 2 L via nasal cannula