In this video, Dr. Radha Krishnan, Director, Pediatric Cardiologist at Fortis Escorts Heart Institute, New Delhi, discuss the intervention in a case with PDA (Patent Ductus Arteriosus). PDA is treated similarly as ventricular septal defect. He explains that if it is a large PDA which is defined by echocardiography, then is it closed soon before six months of age. Many a times it is closed within 3-4 months of age. If it is of moderate size then till one year of age the closure is done. If it is a small defect, till 2-3 years of age the closure is done. Dr. Radha Krishnan will talk about the difference between PDA and VSD.