Abstract

Infective endocarditis is a disease of the inner lining of the heart and cardiac valves, the endocardium, caused by a variety of infectious agents, ranging from streptococci to antibiotic-resistant bacteria, including fungi and parasites.

Anaerobic bacteria are an uncommon but important cause of IE, accounting for 2—16% of all cases. Most cases of anaerobic IE are caused by the anaerobic and microaerophilic streptococci Propionibacterium acnes and B. fragilis.[1] Despite anaerobic IE is rare cause of naive valve endocarditis, is especially seen in elderly patients.We decided to report 67-year-old woman with native mitral valve endocarditis, posteromedial papillary muscle rupture and severe mitral regurgitation due to Clostiridium Histolyticum Bacteria.