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ST-elevation myocardial infarction — USMLE Step 3 MCQ

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EasyEmergency MedicineST-elevation myocardial infarctionUSMLE Step 3

A 61-year-old man has crushing substernal chest pain for 45 minutes with diaphoresis and nausea. ECG shows ST-segment elevation in leads II, III, and aVF. Blood pressure is 132/78 mm Hg. The hospital has immediate PCI capability. Which of the following is the most appropriate next step in management?

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: D — Activate the catheterization laboratory for primary PCI

ST-elevation myocardial infarction requires prompt reperfusion; primary PCI is preferred when rapidly available.

Reference: ACC/AHA STEMI guidance: https://www.acc.org/