title: [Long-term results of mechanical valves in aortic position and biological valves in mitral and tricuspid positions].
abstract: The long-term results of patients undergoing aortic valve replacement (AVR) with a mechanical valve (AM), mitral valve replacement with a biological valve (MB), and tricuspid valve replacement (TVR) with a biological valve (TB) operated upon from 1977 to 1988 were retrospectively analysed. A total of 899 patients received 1117 valves (381 AM, 633 TB, 103 TB) with a follow-up 3778 patient-years and 4582 valve-years. A significant incidence of thromboembolism, hemorrhage, and endocarditis was not found among AVR, MVR, TVR, or multiple valve replacement. We found a significantly decreased incidence of survival rate in multiple valve replacement compared with AVR or MVR, and a significantly increased incidence of reoperation in MB compared with AM and TB. We use AM and TB in any adult patients as a first choice. However, we prefer a mechanical valve in the mitral position except in patients over 65 years old, who have a short life expectancy, in whom anticoagulation is thought to be difficult, and who desire a biological valve.
authors.affiliation: Department of Cardiovascular Surgery, Mitsui Memorial Hospital, Tokyo, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Shimoyama
authors.forename: Y
authors.initials: Y
authors.lastname: Wanibuchi
authors.forename: T
authors.initials: T
authors.lastname: Ino
authors.forename: Y
authors.initials: Y
authors.lastname: Terada
authors.forename: H
authors.initials: H
authors.lastname: Takagi
authors.forename: S
authors.initials: S
authors.lastname: Furuta
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001021:Aortic Valve / Q000601:surgery*; D001705:Bioprosthesis; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis / Q000401:mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000601:surgery*; D011183:Postoperative Complications; D012086:Reoperation; D015996:Survival Rate; D014261:Tricuspid Valve / Q000601:surgery*