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Myocarditis — ABEM Board MCQ

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ModerateCardiovascular emergenciesMyocarditisABEM Board

A 22-year-old man arrives with chest pain and dyspnea 1 week after a viral illness. Triage acuity is ESI 2; BP 94/58 mm Hg, HR 122/min, SpO2 95%. ECG shows diffuse ST changes, troponin is elevated, and bedside echo shows global hypokinesis. Coronary risk factors are absent. Which of the following is the most likely diagnosis?

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Correct answer: C — Acute myocarditis

Viral prodrome, troponin elevation, diffuse ECG changes, and global ventricular dysfunction support myocarditis.

Reference: ACC myocarditis consensus; ACEP chest pain guidance