Determinants of exercise tolerance and post-interventional right ventricular dysfunction in severe primary mitral regurgitation
Right ventricular (RV) dysfunction in severe primary mitral regurgitation (MR) reflects advanced disease and poor prognosis, yet resting echocardiography may fail to detect early RV impairment. Exercise stress echocardiography (SE) enables assessment of RV contractile reserve and RV–pulmonary arterial (RV–PA) cou...