1982 年 46 巻 4 号 p. 415-419
By careful and aggressive managements throughout the follow-up period, the actuarial survival rate of the patients who underwent valve replacement was improved to 88.5% after 5 years and 83% after 10 years. Hereafter, it is expected that the over-all survival rate will be improved much more by the progress of the treatment in the early stage following the operation.