Introduction:

infective endocarditis is a high morbidity and mortality disease, which is about 25%. About fifty percent of patients require heart surgery. In our environment, clinical and evolutionary characteristics of patients operated with active endocarditis are unknown.

Objective:

primary, determine operative mortality and long-term survival; secondary, define predictors of embolisms, local complications, operative mortality and prosthetic endocarditis in evolution.

Methods:

retrospective, analytical study. Patients who received cardiac surgery for active endocarditis between January 2006 and December 2017 were identified. Through multivariate logistic regression, predictors were identified for the stated objectives.

Results:

one hundred and one patients were included. The most frequently found microorganism was Staphylococcus aureus (15.8%). The topography was prosthetic in 20.8%, aortic 46.5%, mitral 23.8% and mitro-aortic 13.9%. The operative mortality was 11.3% and 29.5% (p = 0.025) according to the absence or presence of local complications , the only independent predictor of mortality (OR = 3.32). Local complications were present in 47.5%, the most frequent were abscess (25.7%), independent predictors were: prosthetic endocarditis (OR=5.8), aortic endocarditis (OR=2.9) and male sex (OR=3.5). The incidence of early prosthetic endocarditis was 3% and late 4%. Thirty percent of patients acquired infective endocarditis as a result of an invasive medical procedure in the previous 6 months. Of the seven patients with prosthetic endocarditis in evolution, six had local complications (p <0.05). Embolic events were present in 31.7% of patients, were independent predictors: Staphylococcus aureus (OR=4.6), presence of vegetation in the posterior mitral leaflet (OR=3.2) and history of hypertension (OR=3.32). Survival at 5 and 10 years was 88.20% ± 0.04 and 81.50% ± 0.05 respectively.

Conclusions:

operative mortality of active endocarditis in our environment is high and similar to that reported internationally. The presence of local complications is associated with prosthetic endocarditis in evolution and proved to be an independent predictor of long-term survival, and operative mortality. Long-term survival is similar to that reported internationally. A high incidence of in-hospital agents was observed and invasive procedures as probable causes.

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