Coronary Artery Disease USMLE Step 1 Practice Question
A 28-year-old woman with systemic lupus erythematosus presents with progressive fatigue and exertional dyspnea. Vital signs: BP 118/76 mmHg, HR 92 bpm, RR 18, Temp 37.2°C, SpO2 98% on room air. She denies fever and recent infections. Echocardiography demonstrates small, sterile vegetations on both mitral valve leaflets. Blood cultures remain negative after 48 hours. Rheumatoid factor is elevated. Which diagnosis best explains these findings?
Answer choices
- AAcute infective endocarditis
- BNonbacterial thrombotic endocarditis
- CMyxomatous degeneration
- DLibman Sacks endocarditisCorrect answer
- ERheumatic valvulitis
- FMarantic endocarditis associated with underlying malignancy
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