title: Endocarditis caused by M6.
abstract: M6 is a Moraxella-like organism which is usually of pharyngeal origin and is generally nonpathogenic. Endocarditis caused by M6 occurred in a 31-year-old female with known mitral valve prolapse. The infection quickly responded to ampicillin, but valve replacement was required because of progressive left ventricular failure.
mesh_terms: D000328:Adult; D004697:Endocarditis, Bacterial / Q000382:microbiology*; D005260:Female; D006801:Humans; D008945:Mitral Valve Prolapse / Q000150:complications; D009016:Moraxella / Q000145:classification*