title: Mycobacterium avium-intracellulare endocarditis causing rupture: replacement and repair with aortic homograft.
abstract: Aortic valve endocarditis with extension to the tricuspid annulus and ventricular septum in an intravenous drug abuser - with Mycobacterium avium-intracellulare identified as the offending organism - forms the basis of this report. The aortic root and ventricular septal defect were successfully repaired using an aortic cryopreserved homograft. This case is of particular interest because M avium-intracellulare has not been recognized as a cause of endocarditis. The incidence of atypical organisms as a cause of endocarditis may increase in the future because of the rise of drug abuse and the acquired immune deficiency syndrome in North America.
authors.affiliation: Department of Surgery, Dalhousie University, Halifax, Nova Scotia.
authors.forename: R W
authors.initials: RW
authors.lastname: Landymore
authors.forename: D A
authors.initials: DA
authors.lastname: Murphy
authors.forename: T J
authors.initials: TJ
authors.lastname: Marrie
authors.forename: B L
authors.initials: BL
authors.lastname: Johnston
mesh_terms: D000328:Adult; D001021:Aortic Valve / Q000601:surgery / Q000637:transplantation*; D004697:Endocarditis, Bacterial / Q000382:microbiology*; D006341:Heart Rupture / Q000209:etiology* / Q000601:surgery; D006801:Humans; D008297:Male; D015270:Mycobacterium avium-intracellulare Infection / Q000150:complications* / Q000382:microbiology; D011183:Postoperative Complications; D012008:Recurrence; D015819:Substance Abuse, Intravenous / Q000150:complications; D014184:Transplantation, Homologous