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Post-MI pericarditis — RCPSC IM MCQ

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HardCardiologyPost-MI pericarditisRCPSC IM

A 60-year-old man has pleuritic chest pain improved by sitting forward 2 weeks after an anterior STEMI. ECG shows diffuse ST elevation and PR depression. Troponin is mildly elevated but falling, CRP is high, and echocardiography shows a small pericardial effusion without tamponade. What is the most likely diagnosis?

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Correct answer: E — Post-myocardial infarction pericarditis

Pleuritic positional chest pain, diffuse ST elevation, PR depression, inflammation, and a small effusion after MI support post-myocardial infarction pericarditis rather than recurrent STEMI.

Reference: CCS acute coronary syndrome and pericardial disease guidance