Heart Failure USMLE Step 1 Practice Question
A 23-year-old male collapses during intense exercise. Vital signs reveal HR 118/min, BP 92/58 mmHg, RR 22/min, SpO2 94% on room air. ECG demonstrates T-wave inversions in V1–V3 with epsilon waves at the QRS terminus. Transthoracic echocardiography shows right ventricular dilation with preserved left ventricular function. Troponin I is normal. He denies syncope at rest or palpitations with exertion previously. Which of the following is the most likely diagnosis?
Answer choices
- AHypertrophic cardiomyopathy
- BBrugada syndrome
- CArrhythmogenic right ventricular cardiomyopathyCorrect answer
- DAcute myocarditis
- ERestrictive cardiomyopathy due to amyloid
- FLong QT syndrome
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