title: [Choice of the size and shape of a mitral valve prosthesis].
abstract: The authors discuss the results of mitral valve replacement in 438 patients with intraoperative selection of the prosthesis and in 77 patients with preoperative selection by means of an original method based on two-dimensional echocardiography. The intraoperative selection proved to be insufficiently effective: in the postoperative periods 13.9 +/- 2.7% of patients had marked signs of lack of correspondence of the prostheses to the size and structure of the left ventricle, which was verified at autopsy or by the findings of intravital catheterization of the heart with ventriculograph. The method of preoperative selection of the prosthesis, which was suggested by the authors, is more effective. It allows implantation of an inadequate prosthesis to be absolutely avoided. The method showed implantation of a ball prosthesis to be contraindicated for 33.7 +/- 5.4% of patients with mitral and mitral-aortic valvular diseases.
authors.forename: Iu I
authors.initials: IuI
authors.lastname: Malyshev
authors.forename: A N
authors.initials: AN
authors.lastname: Tarasov
authors.forename: V A
authors.initials: VA
authors.lastname: Koltyshev
mesh_terms: D000328:Adult; D004452:Echocardiography; D004867:Equipment Design; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D008943:Mitral Valve / Q000473:pathology; D011300:Preoperative Care
vernacular_title: Vybor razmera i profilia proteza mitral'nogo klapana.