title: A 22-year course of the Kay-Shiley disc valve with muscle guard at the mitral position.
abstract: Almost 33 years have elapsed since the introduction of the Kay-Shiley disc valve in Japan. Following the development of pyrolite carbon, the Kay-Shiley valve is no longer in clinical use. We report the case of a female patient who had had an isolated mitral valve replacement with the Kay-Shiley disc valve with single muscle guard 22 years previously. After numerous thromboembolic episodes with the Kay-Shiley disc valve, a successful reoperation was done with the CarboMedics valve. The explanted valve revealed that the grooved occluder disc had a loosely adherent clot. The thromboembolism is a notorious complication associated with this valve. We recommend re-replacement of the Kay-Shiley valve whenever possible.
authors.affiliation: Department of Cardiovascular Surgery, Jikei University School of Medicine, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: H
authors.initials: H
authors.lastname: Kurosawa
authors.forename: H
authors.initials: H
authors.lastname: Takakura
authors.forename: F
authors.initials: F
authors.lastname: Saitoh
authors.forename: H
authors.initials: H
authors.lastname: Naganuma
mesh_terms: D000328:Adult; D005260:Female; D006350:Heart Valve Prosthesis; D019918:Heart Valve Prosthesis Implantation; D006801:Humans; D008943:Mitral Valve / Q000601:surgery; D008944:Mitral Valve Insufficiency / Q000601:surgery; D011475:Prosthesis Failure; D012086:Reoperation; D013923:Thromboembolism / Q000209:etiology* / Q000601:surgery*