[Left ventricular-right atrial shunt with bacterial and rheumatic endocarditis of tricuspid valve].

A 14-year-old boy who was operated on for left ventricular-right atrial shunt with bacterial and rheumatic endocarditis of the tricuspid valve (TV) is reported. The patient was pointed out perimembranous ventricular septal defect (VSD) at 4-month old and had complaint of occasional high fever for a half year. The echocardiography showed a vegetation at the TV. The vegetation did not disappear despite of administration of antibiotics for 2 weeks, and pulmonary embolism occurred. Then, the patient underwent resection of the vegetation and direct closure of VSD. The left ventricular-right atrial shunt was formed by the direct communication between VSD below TV annulus and the perforation of septal leaflet of TV adhered to the ventricular septum due to bacterial and rheumatic endocarditis. Earlier operation is needed for this type of case because antibiotics is not effective for the valvular disease.