Abstract
Total 198 episodes of Duke “definite” infective endocarditis (IE) in 192 patients observed over last 10 years were studied [141 males and 51 females, mean age 27.6±12.7 years (range 4–68 years)]. Majorities of patients (76.5%) were below 40 years of age. Rheumatic heart disease (RHD) was the commonest underlying heart disease (present in 46.9% patients). Probable source of infection could be identified in only 16.6% episodes. None of our patient was intravenous drug abuser. Fever (90.0%), anemia (81.0%), clubbing (58.1%), splenomegaly (60.6%), changing/new murmur (22.7%) were the common clinical findings. Vegetations were present in 89.9% episodes. Blood cultures were positive in 134 (67.7%) episodes (streptococci in 23.2%, staphylococci in 19.7%, gram negative in 13.6%, enterococci in 8.1%, polymicrobial and fungal in 1.5% episodes each). Complications were cardiovascular [congestive heart failure (CHF) in 41.9%, atrioventricular block in 1.5%, cardiac temponade and acute myocardial infarction in 0.5% each), neurological in 16.6%, renal in 13.1% and embolisms in total 21.7% episodes. Total 182 (91.9%) episodes in 176 patients were managed completely [(medical in 140 (76.9%) and surgical in 42 (23.1%) episodes] while patients in remaining 16 (8.1%) episodes left against medical advises before completion of therapy. Total 21% patients (37 out of 176 completely treated patients) died during therapy (cause of deaths; CHF in 11, septicemia in 10, cerebral embolism in 7, post cardiac surgery in 5, ruptured cerebral mycotic aneurysm in 2, ventricular tachycardia in 2 patients). On stepwise logistic regression analysis; cardiac abscess and CHF were independent predictors of cardiac surgery. Similarly, CHF, renal failure and prosthetic valve dysfunction were independent predictors of mortality. To conclude, spectrum of IE in our country is different from the west, but quite similar as reported from developed countries about 40 years ago. IE in our country occurs in relatively younger population with RHD as the commonest underlying heart disease. Streptococci are still the commonest responsible microorganisms. Morbidity and mortality are still high. Early cardiac surgery, whenever indicated, helps in improving outcome of these patients.
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