Mitral Valve Annuloplasty and Anterior Leaflet Augmentation for Functional Ischemic Mitral Regurgitation: Quantitative Comparison of Coaptation and Subvalvular Tethering

摘要

BackgroundWhile restrictive mitral annuloplasty (RMA) is the preferred surgical treatment for >functional ischemic mitral regurgitation (>FIMR), some patients with severely dilated left ventricles suffer from recurrent mitral regurgitation (MR). Consequently, new surgical strategies have been entertained to compensate for severely dilated ventricles by maximizing coaptation and reducing subvalvular tethering. Anterior leaflet augmentation (ALA) with mitral annuloplasty has been theorized to meet these goals. This study sought to compare the mechanistic effects of RMA and adjunct ALA in the setting of >FIMR.