“…the role of functional etiology as a predictor of Mr improvement after taVr is highlighted by toggweiler et al 12 in a study on 478 patients. depressed lV ejection fraction and larger lV diameters have also been associated with better improvement of Mr 7,25,26,27 , while calcific degeneration of mitral valve 25 , atrial fibrillation, large left atrial size and pulmonary arterial hypertension have been found to be associated with lack of improvement in Mr after aVr 6,28,29,30 . Furthermore, a 2010 study by Matsumura et al 31 identified preoperative tenting area, tenting height and mitral annulus area -measured by standard echocardiography -as independent predictors of persistent Mr after aVr.…”