Surgical treatment of active valvular infective endocarditis

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Abstract
A review is presented of 20 patients consecutively operated on for acute valvular endocarditis. The diagnosis was established from at least two of the criteria: (a) typical clinical features, (b) two blood cultures positive for the same causal microorganism, and (c) echocardiographic evidence of vegetations. In all cases there was histologic evidence of active infection in the surgical specimen. Only three of the 20 patients had no previous cardiac disease. The most common causal agent was Staphylococcus aureus. The indications for surgery were refractory cardiac failure or infection (18 and 2 cases, respectively). Aortic valve replacement was performed in 16 of the 20 cases, suggesting that aortic valvulopathy aggravates the course of infective endocarditis and increases the risk of heart failure. The overall mortality rate was 30%. All surviving patients were infection-free at postoperative bacteriologic follow-up. Surgery is considered to be the management of choice in active valvular, therapy-resistant bacterial endocarditis with or without cardiac failure.

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