Mitral leaflet anatomy revisited课件.ppt

Mitral leaflet anatomy revisited Objective The aims of this work were to employ functional imaging capabilities of the Visible Heart laboratory and endoscopic visualization of mitral valves in perfusion-fixed specimens to better characterize variability in mitral valve leaflet anatomy and to provide a method to classify mitral leaflets that varies from the current nomenclature. Carpentier A. Cardiac valve surgery—the ‘‘French correction.’’ J Thorac Cardiovasc Surg. 1983;86:323-37 . Carpentier A, Branchini B, Cour JC, Asfaou E, Villani M, Deloche A, et al. Congenital malformations of the mitral valve in children. Pathology and surgical treatment. J Thorac Cardiovasc Surg. 1976;72:854-66. mitral valve accessory leaflets Chiechi M, Lees W, Thompson R. Functional anatomy of the normal mitral valve. J Thorac Surg. 1956;32:378. Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 METHODS We gathered functional endoscopic video footage (11 isolated reanimated human hearts) and static endoscopic anatomical images (38 perfusion-fixed specimens) of mitral leaflets. Commissure and cleft locations were charted using Carpentier’s accepted description. Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 RESULTS Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 DISCUSSION Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 Mitral valve dysfunction Mitral leaflet anatomy revisitedJ Thorac Cardiovasc Surg 2009;137:1077-1081 Although surgical repair of the mitral valve includes several mature and proven techniques, many patients remain untreated (58,000 surgical mitral procedures in the United States in 2005 versus a prevalence of 2.3 million individuals with moderate to severe mitral regurgi