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The Journal of Thoracic and Cardiovascular Surgery, Vol 80, 45-49, Copyright © 1980 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Isolated mitral valve replacement with the Kay-Shiley prosthesis. Long- term follow-up and recommendations

TE Bowen, R Zajtchuk, WH Brott and CM deCastro

Eighty patients underwent isolated mitral valve replacement with the Kay-Shiley prosthesis during a 6 year period (September, 1966, in October, 1972) at Walter Reed Army Medical Center. One-hundred percent follow-up has been achieved with this group. Sixty-four percent of this group have experienced one or more thromboembolic episodes (TEEs), for a TEE rate of 28.7 episodes per 1,000 patient months at risk. The 5 year survival rate is 45%. Eleven of 43 (25%) late deaths resulted from TEEs, and 13 of 43 (30%) late deaths were secondary in the hemorrhagic complications of long-term anticoagulant therapy. The dismal TEE rate prompted as to initiate a policy of elective replacement of all Kay- Shiley mitral prostheses. Eighteen of the 26 survivors underwent replacement of the Kay-Shiley mitral prosthesis. The other eight patients either declined reoperation or were not considered suitable candidates. The reoperative mortality rate was 22% (4/18). Fifteen of 18 explained prostheses revealed a yellow disclored, grooved occluder disc with loosely adherent clot. We recommend elective replacement of Kay-Shiley mitral prostheses in all patients in whom the risk of operation is reasonable.


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 Ann. Thorac. Surg.Home page
S. Nakayama, M. Nonaka, and O. Ishida
Reoperation of the Kay-Shiley Disc Valve 35 Years After Replacement
Ann. Thorac. Surg., April 1, 2005; 79(4): 1395 - 1397.
[Abstract] [Full Text] [PDF]


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Copyright © 1980 by The American Association for Thoracic Surgery.