Keywords: بطن چپ یا بطن چپ; HF; Heart failure; LV; Left ventricular or ventricle; MR; Mitral regurgitation; MV; Mitral valve; LVOT; Left ventricular outflow tract; TMVI; Transcatheter mitral valve implantation; Mitral; Transcatheter; Regurgitation; Surgery; Replacement; Repair;