Assessment of Right ventricular reverse remodeling in infants with critical pulmonary stenosis after balloon pulmonary valvuloplasty using 3D echocardiography

Abstract

Pulmonary stenosis (PS) is a common congenital heart disease. It accounts for approximately 8 - 12% of all congenital cardiac defects, with an incidence of about 1 per 2000 live births worldwide, its prevalence is 2.3 per 10 000 school children. Critical Pulmonary Valve Stenosis (CPS) is of the life-threatening congenital heart defects (CHDs) present during the neonatal period by cyanosis. It is a duct dependent lesion.Neonates and infants with critical PS with right ventricular (RV) pressure equal to or greater than systemic pressure. Echocardiographic evaluation of right ventricular (RV) function is a challenge due to the complex anatomy of the RV. Several transthoracic echocardiographic methods have been suggested for the quantification of RV function. Three-dimensional (3D) echocardiography directly assesses right ventricular (RV) volumes without geometric assumptions, despite the complex shape of the right ventricle, and accordingly is more accurate and reproducible than the two-dimensional methodology, which is able to measure only surrogate parameters of RV function. The present study was done to identify the role of 3D-Echocardiographic assessment of RV volumes and function in patients with critical pulmonary stenosis undergoing balloon pulmonary valvuloplasty pre and post dilatation, the immediate