From 1985 to 1990, a total of 160 new valves were implanted for 125 adult patients to whom prosthetic valve replacement had been performed (One patient had consecutive 2 reoperations). Following data are the results from the follow-up study from
January
1985 to February 1991.
Mean age of the patients was 37.9±12.1 years. Mean follow-up period was 25.8±18.8 months.
In bioprosthesis, mean interval between the previous operation and reoperation was 85.6±36.4 months in aortic valve, and 87.3±30.0 months in mitral valve.
The causes of reoperation were prosthetic valve failure(103 patients, 81.7%), prosthetic valve endocarditis(17 patients, 13.5%), periprosthetic leakage(5 patients, 4.0%), and aneurysm of ascending aorta(1 patients, 0.8%).
Fourteen patients(11.1%) died in hospital ; 5 in 22 replacement of aortic valve(22.7%), 6 in 73 replacement of mitral valve(8.2%), and 3 in 31 replacement of multiple valves (9.7%) Except for 3 intraoperative deaths, postoperative, major and
minor
complications occurred in 39 patients(31.0%). And the actuarial 5-year survival rate of operative survivors was 95.5±8.2%.
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