title: Hemodynamic performance of the Carpentier-Edwards pericardial valve in the aortic position in vivo.
abstract: The bovine pericardial valve was developed to improve the hemodynamic function of tissue valves. Eighty-one patients undergoing aortic valve replacement with the Carpentier-Edwards pericardial valve in the aortic position were studied intraoperatively. Mean gradient across the valve (mm Hg) decreased as valve size increased: size 19, 23.0 +/- 7.8; size 21, 19.7 +/- 6.6; size 23, 15.2 +/- 8.6; size 25, 13 +/- 4.0. Mean valve orifice area (cm2) increased as valve size increased: size 19, 1.1 +/- 0.4; size 21, 1.4 +/- 0.6; size 23, 2.0 +/- 0.7; size 25, 2.1 +/- 0.7. The mean transvalvular gradient, valve orifice area, and performance index increased as mean flow increased. The Carpentier-Edwards pericardial valve provides excellent hemodynamic performance that is acceptable even in size 19.
mesh_terms: D000818:Animals; D001021:Aortic Valve / Q000502:physiology* / Q000601:surgery; D001705:Bioprosthesis; D001783:Blood Flow Velocity; D002302:Cardiac Output; D002417:Cattle; D002933:Cineradiography; D006350:Heart Valve Prosthesis; D006439:Hemodynamics; D006801:Humans; D008943:Mitral Valve / Q000502:physiology / Q000601:surgery; D010496:Pericardium