Abbreviations:
AA = atrial arrhythmia
AF = atrial fibrillation
AT = atrial tachycardia
CPB = cardiopulmonary bypass
EF = ejection fraction
LA = left atrium or left atrial
LV = left ventricle or left ventricular
MR = mitral regurgitation
ROC = receiver operating characteristic
TMF = transmitral flow
TMPG = transmitral pressure gradient
TTE = transthoracic echocardiography