Infective endocarditis: diagnosis, treatment, and mortality, as related to surgical timing and infectious organism
1987
To evaluate the timing of surgical treatment in infective endocarditis and to determine the relationship between the risk of mortality and the species of infectious organism, we reviewed a consecutive series of 65 cases involving patients with infective endocarditis who had been treated over a 17-year period. The patients included 41 males and 24 females, who ranged in age from 6 to 85 years (mean, 39.3 years). Forty-five had native valve endocarditis, 14 had prosthetic valve endocarditis, and six had endocarditis associated with congenital heart defects. Fifty-two patients underwent valve replacement, which was associated with an overall operative mortality of 19%. Those who underwent valve replacement during the early active stage (first 3 weeks) of infection had a higher mortality rate than those who had surgery either during the late active stage (second 3 weeks) of infection or after 6 weeks of antibiotic therapy. S. aureus and Pseudomonas organisms were responsible for the most deaths. On the basis of this study, we recommend that, when cardiovascular function permits, patients who are hemodynamically stable and free of emboli should receive 4 to 6 weeks of antibiotic therapy before undergoing surgical treatment. In contrast, patients with high-risk organisms are more likely to survive if subjected to early surgical intervention.
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