RESUMO
We report a 22-year-old man who developed shortness of breath after lifting weights and then developed acute heart failure due to rupture of an aneurysm of the right sinus of Valsalva into the right ventricle. The patient developed dyspnea, and clinical findings included tachycardia, wide pulse pressure, bounding carotid and peripheral pulses, pulmonary crackles, and prominent continuous precordial murmur with thrill. Transesophageal echocardiogram with Doppler examination confirmed the diagnosis. The patient underwent surgery with cardioplegia directly infused into the coronary arteries with excision of redundant tissue and closure of the defect with a Dacron patch. He has been asymptomatic since surgery. This condition must to be included in the differential diagnosis for young patients with heart failure.