Bacteroides fragilis endocarditis.

We recently diagnosed and treated an unusual case of primary endocarditis due to Bacteroides fragilis, for which no underlying etiology was found. Antibiotic treatment involved multiple parenteral and oral antibiotics, and sensitivity studies allowed choice of antibiotics. Despite complications, the patient was cured. Few cases of Bacteroides fragilis endocarditis have been reported, and therapy has changed with newer antibiotics.