Journal Article Long-term durability of pericardial valves in the aortic position in younger patients: when does reoperation become necessary?

Minakata, Kenji  ,  Tanaka, Shiro  ,  Takahara, Yoshiharu  ,  Kaneko, Tatsuo  ,  Usui, Akihiko  ,  Shimamoto, Mitsuomi  ,  Okawa, Yohei  ,  Yaku, Hitoshi  ,  Yamanaka, Kazuo  ,  Tamura, Nobushige  ,  Sakata, Ryuzo

30 ( 5 )  , pp.405 - 413 , 2015-03-19 , wiley
ISSN:0886-0440
NCID:AA10717685
Description
[Background]We sought to assess the long-term durability of pericardial valves in patients at age <65 years undergoing aortic valve replacement (AVR), and to determine the timing of redo operations due to structural valve deterioration (SVD). [Methods]From 1986 to 2001, a total of 574 adult patients underwent AVR with pericardial valves in nine hospitals in Japan. Of these, 53 patients were at age <65 years (group Y). These patients were compared with those of age ≥65 (group O, n = 521). [Results]The mean follow-up duration was 9.5 years in group Y and 8.1 years in group O. Freedom from reoperation due to SVD was 100% at five years, 90.8% at 10 years, and 47.2% at 15 years in group Y, and 99.3% at five years, 97.4% at 10 years, and 94.4% at 15 years in group O (log-rank test, p < 0.01). In those who required redo AVR in group Y (n = 12), the mean time from initial operation to reoperation was 12.1 years. The reoperation-free survival curve started to decline after eight years postoperation in group Y. [Conclusions]Redo AVR started to become necessary eight years after surgery in the patients who underwent AVR with pericardial valve at age <65 years. In addition, approximately half of those patients required reoperation due to SVD by 15 years postoperatively.
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http://repository.kulib.kyoto-u.ac.jp/dspace/bitstream/2433/200705/1/jocs.12537.pdf

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