Abbreviations:
ASD: atrial septal defect
ASO: atrial septal Occluder
AT: atrial tachycardia
AF: atrial fibrillation
AFM: atrio-fascicular Mahaim
ECG: electrocardiography
EPS: electrophysiologic study
FAC: fractional area change
IAS: inter atrial septum
LBBB: left bundle branch block
LV: left ventricle
PFO: patent foramen ovale
QP/QS: ratio of pulmonary to systemic blood flow
RV: right ventricle
RA: right atrium
TEE: trans-esophageal echocardiography
TV: tricuspid valve
TR: tricuspid regurgitation
VSD: ventricular septal defect
3D: three-dimensional