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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 elevations in II, III, and aVF. Blood pressure is 132/78 mm Hg and no contraindication to antithrombotic therapy is present. Which of the following is the most appropriate next step in management?

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

ST-elevation myocardial infarction requires immediate reperfusion, preferably primary PCI when available in the recommended timeframe.

Reference: ACC/AHA STEMI Guideline