58-year-old woman with aortic regurgitation was admitted to our hospi-
tal because of high grade fever. She had infective endocarditis and an aneurysm of the
anterior mitral leaflet. Doppler echocardiography indicated a ruptured mitral valve
aneurysm. Aortic regurgitant flow along the anterior mitral leaflet was suspected to have
contributed to mitral valve endocarditis, aneurysm formation and rupture. She was initially
treated with high-dose intravenous penicillin, but congestive heart failure worsened. Mitral
valve replacement was then successfully performed
