Abbreviations
AEI: LA active systolic function (active ejection index)
DEI: LA storage function (diastolic ejection index)
ePLAGS: echocardiographic pulmonary to left atrial global strain ratio
LAQ: left atrial quantification
LAVImax: The indices of left atrial maximum volume
LAVIpreA: The indices of left atrial volume at pre-ejection
LAVImin: The indices of left atrial minimum volume.
LASr: LA reservoir strain
LAScd: LA conduit strain
LASct: LA contraction strain.
PAMP: pulmonary arterial mean pressure
PAWP: pulmonary arterial wedge pressure
PEI: LA channel function (passive ejection index)
PH: pulmonary hypertension