title: Mechanical valve replacement versus bioprosthetic valve replacement in the tricuspid valve position.
abstract: BACKGROUND
  The purpose of this study was to evaluate the clinical outcomes and risk of tricuspid valve replacements and to compare bioprosthetic versus mechanical valves.
  
  
  METHODS
  Between 1991 and 2009, 104 consecutive patients (71 women; mean age, 57 ± 10.8 years) with tricuspid valvular disease underwent mechanical TVR (mechanical group; n = 59) or bioprosthetic TVR (bioprosthesis group; n = 45). Follow-up was complete in 97.1% (n = 101) with a median duration of 49.9 months (range 0-230 months).
  
  
  RESULTS
  Hospital mortality after mechanical TVR and bioprosthetic TVR was not different on adjusted analysis by propensity score. Ten-year actuarial survival after mechanical and bioprosthetic TVR was 83.9 ± 7.6% and 61.4 ± 9.1%, respectively (p = 0.004). However, there was also no significant difference in terms of adjusted analysis by propensity score (p = 0.084). No statistically significant difference was detected between mechanical and bioprosthetic valves in regard to event-free survival.
  
  
  CONCLUSIONS
  Mechanical TVR is not inferior to bioprosthetic TVR in terms of occurrence of valve-related events, especially anticoagulation-related complications.
authors.affiliation: Department of Thoracic and Cardiovascular Surgery, Gangneung Asan Hospital, University of Ulsan, College of Medicine, Gangneung, Korea.
authors.forename: Won-Chul
authors.initials: WC
authors.lastname: Cho
authors.forename: Chong Bin
authors.initials: CB
authors.lastname: Park
authors.forename: Joon Bum
authors.initials: JB
authors.lastname: Kim
authors.forename: Sung-Ho
authors.initials: SH
authors.lastname: Jung
authors.forename: Cheol Hyun
authors.initials: CH
authors.lastname: Chung
authors.forename: Suk Jung
authors.initials: SJ
authors.lastname: Choo
authors.forename: Jae Won
authors.initials: JW
authors.lastname: Lee
mesh_terms: D000206:Actuarial Analysis; D000328:Adult; D000368:Aged; D001705:Bioprosthesis; D002423:Cause of Death; D015897:Comorbidity; D005260:Female; D005500:Follow-Up Studies; D006349:Heart Valve Diseases / Q000209:etiology / Q000401:mortality / Q000601:surgery*; D006350:Heart Valve Prosthesis; D017052:Hospital Mortality; D006801:Humans; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000209:etiology* / Q000401:mortality; D057216:Propensity Score; D012086:Reoperation; D016019:Survival Analysis; D014261:Tricuspid Valve / Q000601:surgery*