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1. A 68-year-old patient is admitted to the ICU with severe sepsis. Hemodynamic monitoring shows CVP 2 mmHg, MAP 55 mmHg, and heart rate 120 bpm. Urine output is 15 mL/hr. What is the most urgent initial nursing intervention?
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3. A nurse is managing a patient with an arterial line. The waveform suddenly flattens. What is the first technical troubleshooting step the nurse should perform?