Early-Diastolic Right Ventricle-Pulmonary Artery Pressure Gradient by Doppler Echocardiography to Guide Cardiac Magnetic Resonance Assessment of Pulmonary Regurgitation after Right Ventricular Outflow Tract Reconstruction.
BACKGROUND Pulmonary regurgitation (PR) after right ventricular outflow tract (RVOT) reconstruction is a major driver of right ventricular (RV) remodeling. Cardiac magnetic resonance (CMR) is the reference standard for quantifying PR but is not routinely feasible in many pediatric follow-up settings. We evaluated wheth...