Determinants of Disproportionality in Functional Mitral Regurgitation - Importance of Mitral Valve Morphology.
BACKGROUND Disproportionate (d-) functional mitral regurgitation (FMR) is characterized by greater mitral regurgitation (MR) severity than expected from left ventricular (LV) dilatation. Morphological determinants of this imbalance remain unclear. METHODS AND RESULTS Consecutive patients who underwent transcatheter e...