title: Hemodynamic evaluation of stentless mitral valve replacement.
abstract: The purpose of this study was to evaluate the perioperative and postoperative hemodynamic function of recently introduced stentless mitral valves (SMVs). Forty-two selected patients who had received the SMV since 1997 had preoperative, postoperative, and follow-up transthoracic echocardiographic (TTE) examinations. Transesophageal echocardiography (TEE) was applied routinely during the operation as well as postoperatively if indicated. Adequate SMV function was seen in all patients perioperatively. Echocardiographic prediction of valve size and of papillary muscle distances was correct in 37 of 42 patients. Transvalvular blood flow velocities were 1.6 +/- 0.2 m/s postoperatively versus 1.8 +/- 0.3 m/s at 1 year and 1.7 +/- 0.3 m/s at 3-year follow-up. Mean transvalvular gradients were 4.3 +/- 1.6, 3.8 +/- 1.9, and 4.7 +/- 1.1 mm Hg, respectively. TEE and TTE are extremely useful to assist SMV implantation as well as for regular follow-up evaluation. The hemodynamic function after SMV implantation with preservation of the annulo-ventricular continuity is promising.
authors.affiliation: Klinik für Herzchirurgie, Herzzentrum, Universität Leipzig, Germany. walt@medizin.uni-leipzig.de
authors.forename: Thomas
authors.initials: T
authors.lastname: Walther
authors.forename: Volkmar
authors.initials: V
authors.lastname: Falk
authors.forename: Sven
authors.initials: S
authors.lastname: Lehmann
authors.forename: Claudia
authors.initials: C
authors.lastname: Walther
authors.forename: Nico
authors.initials: N
authors.lastname: Doll
authors.forename: Jan
authors.initials: J
authors.lastname: Bucerius
authors.forename: Jan
authors.initials: J
authors.lastname: Gummert
authors.forename: Friedrich W
authors.initials: FW
authors.lastname: Mohr
mesh_terms: D000368:Aged; D001783:Blood Flow Velocity / Q000502:physiology; D004452:Echocardiography; D005260:Female; D006349:Heart Valve Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D006439:Hemodynamics / Q000502:physiology*; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000000981:diagnostic imaging / Q000503:physiopathology* / Q000601:surgery*; D011184:Postoperative Period; D020127:Recovery of Function / Q000502:physiology; D015203:Reproducibility of Results; D015607:Stents