Background: Twenty percent of all isolated congenital cardiac abnormalities in children are due to ventricular septal defect (VSD). Congestive heart failure, failure to thrive, enlargement of the left atrium and left ventricle, or high pulmonary artery pressures are common indications for transcatheter closure of a moderately sized VSD (or both). Objective: This study aimed to study the safety, efficacy, and outcome of transcatheter closure of VSDs in Paediatric Cardiac Catheter Unit in children's