What is the Diagnosis?

Abstract

A 58-year-old man was hospitalized with syncope followed by fast restoration of consciousness (approximately, 15 seconds). The patient complained of fatigue or dyspnea on moderate efforts in the last seven months, which were aggravated by minimal activities over the last two weeks before hospitalization. He has a previous history of hypertension, myocardial infarction and coronary artery bypass grafting. Long-term medical therapy consisted of daily enalapril 10 mg, carvedilol 50 mg, furosemide 40 mg, atorvastatin 10 mg and aspirin 100 mg

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