BSA, body surface area Journal Article RVSP, right ventricular systolic pressure ASD, atrial septal defect AcT, acceleration time AcTc, acceleration time corrected to heart rate BPV, balloon pulmonary valvuloplasty Balloon pulmonary valvuloplasty CHD, congenital heart disease Congenital heart disease Critical pulmonary stenosis DTI, Doppler tissue imaging Doppler ECG, electrocardiogram InT, inflection time InTc, inflection time corrected to heart rate Infants MPAP, mean pulmonary artery pressure Noninvasive PA, pulmonary artery PADP, pulmonary artery diastolic pressure PASP, pulmonary artery systolic pressure PCWP, pulmonary capillary wedge pressure PDA, patent ductus arteriosus PFO, patent foramen ovale PG, pressure gradient PH, pulmonary hypertension PR, pulmonary regurgitation PS, pulmonary stenosis PV, pulmonary valve