title: A case of 24 years longevity of an Ionescu-Shiley bioprosthesis in the mitral position.
abstract: Valve dysfunction, attributed to primary tissue failure several years after implantation of Ionescu-Shiley bioprostheses, has led to re-operation in most cases. We report a rare case of this bioprosthesis showing stenosis and regurgitation after implantation in the mitral position 24 years previously. No cusp tears, but severe calcification and well-grown neointima over the Dacron cloth of the inner surface were observed. This may explain how the valve functioned for such a long period of time. We replaced it with a Carpentier-Edwards pericardial bioprosthesis.
authors.affiliation: Division of Cardiovascular Surgery, Kiryu Kosei General Hospital, Orihime 6-3, Kiryu, Gunma 376-0024, Japan. yuwatanabe-ths@umin.ac.jp
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Watanabe
authors.forename: Shuuichi
authors.initials: S
authors.lastname: Ohkawa
authors.forename: Keisuke
authors.initials: K
authors.lastname: Yamabuki
authors.forename: Hidekazu
authors.initials: H
authors.lastname: Tsuneoka
authors.forename: Noboru
authors.initials: N
authors.lastname: Sugiyama
authors.forename: Teruo
authors.initials: T
authors.lastname: Hiyama
mesh_terms: D000368:Aged; D001705:Bioprosthesis / Q000009:adverse effects*; D020878:Device Removal; D006333:Heart Failure / Q000209:etiology; D006350:Heart Valve Prosthesis / Q000009:adverse effects*; D019918:Heart Valve Prosthesis Implantation / Q000009:adverse effects; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000601:surgery*; D011475:Prosthesis Failure; D012086:Reoperation; D013997:Time Factors