Abstract 11380: Undersizing Mitral Annuloplasty Acutely Eliminates Functional Mitral Regurgitation but Does Not Relieve Tethering Forces on the Mitral Valve Chordae Tendineae

Introduction: Functional mitral regurgitation (FMR) develops secondary to mitral valve (MV) geometric distortions such as isolated annular dilatation (AD), asymmetric tethering (Asym), and symmetri...