title: Short-term hemodynamic performance of the mitral Carpentier-Edwards PERIMOUNT pericardial valve. Carpentier-Edwards PERIMOUNT Investigators.
abstract: BACKGROUND
  Although long-term durability data exist, little data are available concerning the hemodynamic performance of the Carpentier-Edwards PERIMOUNT pericardial valve in the mitral position.
  
  
  METHODS
  Sixty-nine patients who were implanted with mitral PERIMOUNT valves at seven international centers between January 1996 and February 1997 consented to participate in a short-term echocardiography follow-up. Echocardiographs were collected at a mean of 600+/-133 days after implantation (range, 110 to 889 days); all underwent blinded core lab analysis.
  
  
  RESULTS
  At follow-up, peak gradients were 9.09+/-3.43 mm Hg (mean, 4.36+/-1.79 mm Hg) and varied inversely with valve size (p < 0.05). The effective orifice areas were 2.5+/-0.6 cm2 and tended to increase with valve size (p = 0.08). Trace mitral regurgitation (MR) was common (n = 48), 9 patients had mild MR, 1 had moderate MR, none had severe MR. All MR was central (n = 55) or indeterminate (n = 3). No paravalvular leaks were observed. Mitral regurgitation flow areas were 3.4+/-2.8 cm2 and were without significant volumes.
  
  
  CONCLUSIONS
  In this multicenter study, these mitral valves are associated with trace, although physiologically insignificant, central MR. Despite known echocardiographic limitations, the PERIMOUNT mitral valves exhibit similar hemodynamics to other prosthetic valves.
authors.affiliation: Department of Cardiology, The Cleveland Clinic Foundation, Ohio 44195, USA.
authors.forename: M S
authors.initials: MS
authors.lastname: Firstenberg
authors.forename: A J
authors.initials: AJ
authors.lastname: Morehead
authors.forename: J D
authors.initials: JD
authors.lastname: Thomas
authors.forename: N G
authors.initials: NG
authors.lastname: Smedira
authors.forename: D M
authors.initials: DM
authors.lastname: Cosgrove
authors.forename: M A
authors.initials: MA
authors.lastname: Marchand
mesh_terms: D000368:Aged; D001705:Bioprosthesis; D002423:Cause of Death; D015150:Echocardiography, Doppler; D019544:Equipment Failure Analysis; D005260:Female; D005500:Follow-Up Studies; D006350:Heart Valve Prosthesis; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D008297:Male; D008943:Mitral Valve / Q000601:surgery*; D008944:Mitral Valve Insufficiency / Q000401:mortality / Q000503:physiopathology / Q000601:surgery; D011183:Postoperative Complications / Q000401:mortality / Q000503:physiopathology*; D012008:Recurrence; D012189:Retrospective Studies; D016019:Survival Analysis