A 22-year course of the Kay-Shiley disc valve with muscle guard at the mitral position.
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.
Sakamoto
Y
Y
Department of Cardiovascular Surgery, Jikei University School of Medicine, Tokyo, Japan.
Kurosawa
H
H
Takakura
H
H
Saitoh
F
F
Naganuma
H
H
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*