The charge nurse is supervising care for a group of patients monitored with a variety of invasive hemodynamic devices. Which patient should the charge nurse evaluate first?

Rationale: A. This patient has a pulmonary artery occlusion pressure (PAOP) of 25 mm Hg (elevated; normal 8–12 mm Hg) and oxygen saturation of 89% on supplemental oxygen, indicating pulmonary edema or fluid overload with impaired oxygenation. This is life-threatening and requires immediate assessment and intervention, making it the highest priority. B. Incorrect. A BP of 140/86 mm Hg is mildly elevated, and a slightly dampened arterial waveform may indicate a technical issue with the arterial line rather than an acute hemodynamic emergency. This patient is stable compared to option A. C. A CVP of 6 mm Hg is within normal limits (2–8 mm Hg). Urine output of 25 mL in the past hour is low (oliguria) but not immediately life-threatening compared to the hypoxemia and pulmonary congestion in option A. This patient requires monitoring and possible fluid management, but not as urgent as A. D. This patient has normal pulmonary artery pressures (25/10 mm Hg) and adequate oxygen saturation, with only a low-grade fever. This is the least urgent among the options.