title: Missing leaflet: a rare cause of structural deterioration of a bovine pericardial aortic bioprosthesis-report of a case.
abstract: We experienced a rare cause of aortic bioprosthesis deterioration in which one of the leaflets disappeared 8.7 years after primary aortic valve replacement (AVR) in a male octogenarian. Successful redo AVR with a 23-mm Magna EASE (Carpentier-Edwards, Irvine, CA) was performed. No embolic complications occurred. We were unable to identify the cause of this devastating complication. When heart failure symptoms develop in patients with bioprostheses, clinicians should therefore consider a diagnosis of acute progression of structural valve deterioration and follow the patient carefully with echocardiography.
authors.affiliation: Division of Cardiovascular Surgery, Department of Surgery, Tottori University Faculty of Medicine, 36-1 Nishi-cho, Yonago, Tottori, 683-8504, Japan, yoshisao@med.tottori-u.ac.jp.
authors.forename: Yoshinobu
authors.initials: Y
authors.lastname: Nakamura
authors.forename: Yoshikazu
authors.initials: Y
authors.lastname: Fujiwara
authors.forename: Suguru
authors.initials: S
authors.lastname: Shiraya
authors.forename: Munehiro
authors.initials: M
authors.lastname: Saiki
authors.forename: Shingo
authors.initials: S
authors.lastname: Harada
authors.forename: Yuichiro
authors.initials: Y
authors.lastname: Kishimoto
authors.forename: Takeshi
authors.initials: T
authors.lastname: Onohara
authors.forename: Yuki
authors.initials: Y
authors.lastname: Otsuki
authors.forename: Motonobu
authors.initials: M
authors.lastname: Nishimura
mesh_terms: D000368:Aged; D000818:Animals; D001021:Aortic Valve / Q000601:surgery*; D001022:Aortic Valve Insufficiency / Q000000981:diagnostic imaging / Q000601:surgery*; D001705:Bioprosthesis / Q000009:adverse effects*; D002417:Cattle; D004452:Echocardiography; D006333:Heart Failure / Q000000981:diagnostic imaging / Q000209:etiology*; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects*; D006801:Humans; D008297:Male; D011475:Prosthesis Failure / Q000009:adverse effects*; D012086:Reoperation; D013997:Time Factors; D016896:Treatment Outcome