Seventy-eight consecutive episodes of infective endocarditis on native valves have been prospectively treated and followed-up after discharge from 1975 to 1982 (mean follow-up period 31 months). Twenty one patients needed valvular replacement in the active phase of the disease. Overall mortality was 15 cases, 7 from the medical group and 8 from the surgical group. At last clinical control 21 from the 46 survivors of the medical group remained asymptomatic, 17 had needed valvular replacement, 5 had died 2 of congestive heart failure and 3 (addicts) were lost to follow-up. From the 13 survivors of the surgical group 8 remained asymptomatic with good prosthetic function, 4 had needed reoperation due to severe periprosthetic leak and 1 died suddenly during follow-up. Figures at the end of follow-up showed that 28% of the initial patients had died, 39% carried a valvular prosthesis and 28% remained asymptomatic. A retrospective analysis of factors predictive of poor prognosis has been carried out.
A report is given of 13 patients with late prosthetic valve endocarditis (1975-1982). Follow-up ranged from 1 to 8 years (mean 33 months). Causative organisms were streptococci in 8 cases, staphylococci in 2, and Cardiobacterium hominis in 1. Cultures were negative in 2. Surgical treatment in the acute phase was performed in 3 patients. At the latest clinical control, 3 patients had died and 10 patients were asymptomatic, 3 of them having required late operation. These fair results are attributable to the particular spectrum of causative organisms and to the proper timing of surgical treatment in the 3 patients operated during the acute phase.
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