Long Term Clinical Follow Up of the Ionescu-Shiley Pericardial Xenograft in Mitral Position.
10.4326/jjcvs.25.235
- VernacularTitle:僧帽弁位に用いたＩｏｎｅｓｃｕ－Ｓｈｉｌｅｙ弁の長期遠隔成績
- Author:
Yoshimasa Sakamoto
;
Hiromi Kurosawa
;
Masamichi Nakano
;
Kazuhiko Suzuki
;
Hiromitsu Takakura
- Publication Type:Journal Article
- Keywords:
Ionescu-Shiley Pericardial Xenograft
- From:Japanese Journal of Cardiovascular Surgery
1996;25(4):235-239
- CountryJapan
- Language:Japanese
-
Abstract:
Ionescu-Shiley pericardial xenografts implanted in the mitral position between April 1980 and October 1984 were studied. In some cases the cusp was torn in a relatively early postoperative phase, thus requiring an emergency operation. Functional disorders, such as caused by the calcification of the cusp, advance at a relatively moderate pace, and the prognosis of a second operation in cases with valve dysfunction and a chronic course was favorable. The actuarial probability of freedom from reoperation was 88.5±8.7% at 5 years and 55.7±14.5% at 10 years. The structural deterioration of the pericardial valve increased about 5 years after replacement. This tendency was the same as in other bioprostheses. At 10 years the overall actuarial survival rate was 67.2±12.1%. Freedom at 10 years from thromboembolism was 84.6±9.8%. For cases whose the course is under observation at present, the strategy is to recommend an additional operation as far as possible, while continuously observing the function of the valve.
