title: St. Jude Medical prosthetic aortic valve malfunction due to pannus formation.
abstract: According to the literature, the incidence of pannus formation with the St. Jude Medical prosthetic aortic valve has been reported at 0.03% and 0.14% (per patient-year), with no case report of St. Jude Medical prosthetic aortic valve malfunction due to pannus formation. Between 1980 and 1999, 1,186 patients underwent aortic valve replacement at our institute. We encountered 2 aortic valve malfunctions due to pannus formation, including the case of a 53-year-old woman who suffered a St. Jude medical aortic valve malfunction 13 years after the initial operation. A second aortic valve replacement was successful and the postoperative course was uneventful. The possibility of pannus formation on St. Jude Medical aortic valves must thus be considered and its mechanism clarified.
authors.affiliation: Department of Cardiovascular Surgery, Heart Institute of Japan, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Naito
authors.forename: M
authors.initials: M
authors.lastname: Hachida
authors.forename: T
authors.initials: T
authors.lastname: Shimabukuro
authors.forename: M
authors.initials: M
authors.lastname: Nonoyama
authors.forename: M
authors.initials: M
authors.lastname: Endo
authors.forename: H
authors.initials: H
authors.lastname: Koyanagi
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000601:surgery; D005260:Female; D006331:Heart Diseases / Q000209:etiology* / Q000601:surgery; D006350:Heart Valve Prosthesis; D006801:Humans; D008875:Middle Aged; D011475:Prosthesis Failure; D012086:Reoperation; D013927:Thrombosis / Q000209:etiology* / Q000601:surgery