A 27-year-old woman presents with intermittent palpitations and brief atypical chest pain. Vital signs: BP 118/76 mmHg, HR 88 bpm, RR 16/min, temp 37°C, SpO2 98% on room air. Cardiac examination reveals a midsystolic click followed by a late systolic murmur that becomes louder upon standing from a squatting position. Chest radiograph shows no cardiomegaly. She denies orthopnea and leg edema. Which of the following is the most likely diagnosis?
- A)Aortic stenosis
- B)Mitral valve prolapseGABARITO
- C)Hypertrophic cardiomyopathy
- D)Mitral stenosis
- E)Tricuspid regurgitation
Explicação
The midsystolic click and late systolic murmur that intensify with decreased preload are classic for mitral valve prolapse. Standing decreases left ventricular volume, causing earlier prolapse of the valve into the left atrium. MVP is commonly due to myxomatou... Ver explicação completa e trilha adaptativa →