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ST-elevation myocardial infarction — USMLE Step 3 MCQ

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EasyEmergency MedicineST-elevation myocardial infarctionUSMLE Step 3

A 59-year-old man has 45 minutes of crushing substernal chest pain radiating to the left arm. ECG shows ST-segment elevations in leads II, III, and aVF. The hospital has immediate catheterization 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: AActivate the catheterization laboratory for primary percutaneous coronary intervention

STEMI at a PCI-capable hospital requires urgent reperfusion with primary PCI unless contraindicated.

Reference: ACC/AHA STEMI management guidance