LA- left atrium; LVEF- left ventricular ejection fraction; LVIDd- left ventricle internal dimension in diastole; LVIDs- left ventricle internal dimension in systole; LASr- left atrium reservoir strain; LAScd- left atrium conduit strain; LASct- left atrium contractile strain; MG- mean diastolic transmitral gradient; MVA- mitral valve area; PG- peak diastolic transmitral gradient; RVSP- right ventricle systolic pressure