title: [Pannus Formation Six-years after Aortic and Mitral Valve Replacement with Tissue Valves;Report of a Case].
abstract: A 77-year-old man presented with exertional dyspnea. He had undergone aortic and mitral valve replacement with tissue valves 6-years earlier. The patient's hemoglobin level was 9.8 g/dl and serum aspartate aminotransferase (70 mU/ml) and lactate dehydrogenase (1,112 mU/ml) were elevated. Echocardiography revealed stenosis of the prosthetic valve in the aortic position with peak flow velocity of 3.8 m/second and massive mitral regurgitation. The patient underwent repeat valve replacement. Pannus formation around both implanted valves was observed. The aortic valve orifice was narrowed by the pannus, and one cusp of the prosthesis in the mitral position was fixed and caused the regurgitation, but they were free from cusp laceration or calcification. The patient's postoperative course was uneventful, and he continues to do well 14 months after surgery.
authors.affiliation: Department of Cardiovascular Surgery, Jichi Medical University, Shimotsuke, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Nakamura
authors.forename: Arata
authors.initials: A
authors.lastname: Muraoka
authors.forename: Kei
authors.initials: K
authors.lastname: Aizawa
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Akutsu
authors.forename: Soki
authors.initials: S
authors.lastname: Kurumisawa
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Misawa
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery*; D003251:Constriction, Pathologic / Q000209:etiology*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D011475:Prosthesis Failure; D013997:Time Factors