Durabilty and Long-Term Results of Aortic Valve Replacement in the Elderly
Isolated aortic valve replacement for aortic stenosis was performed on 355 elderly patients (53.5% female), age 70–85 years, between January 1911 and December 1985. One-third of the patients (112) received mechanical valves; 243 patients received bioprostheses. Since April 1981, biological prostheses have been used as the substitute of choice in this group of patients. There was 100% follow-up of the 319 operative survivors for nearly 12 years, for a total of 1101 patient-years and a mean of 3.2 years. The overall survival rate at 5 years is 10.8% (operative deaths included) and the functional result is excellent. Late deaths and complications are reviewed and comparison is made between the two types of prostheses.
KeywordsValve Replacement Aortic Stenosis Aortic Valve Replacement Mechanical Valve Actuarial Survival
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