Ruptured mitral valve aneurysm: A devastating complication of aortic valve endocarditis.

Mitral valve aneurysm is a rare clinical entity that is mostly resulted from infective endocarditis, in particular, aortic valve endocarditis. Once mitral valve aneurysm ruptures and severe mitral regurgitation and hemodynamic instability develop, prompt surgery should be considered. Here we report a patient with ruptured mitral valve aneurysm associated with native aortic valve endocarditis that was improved after a successful mitral and aortic valve replacement surgery associated with antibiotic therapy for 6 weeks.