[Isolated infective endocarditis located in the tricuspid valve; report of a case].

We report surgically treated case of tricuspid valve endocarditis in a non-drug addict. A 74-year-old man with no history of cardiac disease was admitted to our hospital for persistent pyrexia. The blood culture was negative. Echocardiography showed vegetations attached to the tricuspid valve with mild tricuspid regurgitation. Intravenous antibiotics therapy was unable to control the infection. So we performed tricuspid valve repair and annuloplasty using an artificial ring. The postoperative course was uneventful. After prophylactic antibiotic administration for 15 weeks, he was afebrile for 1 week without any medication. Thereafter he was discharged and has been free from any complication for over 16 months.