Dr. Smita Mishra, Paediatric Cardiologist, Associate Director - Jaypee Hospital, will explain about patent ductus arteriosus (PAD) in this video. It is common in foetal life. Once the baby is born, PAD closes within 72 hours or within three months. If the baby is born before 40 weeks, the ductus remains open and is troublesome and requires medical management. Sometimes even surgical ligation is required as early as 2 weeks of life. If the baby is responding to medical management, then can undergo device closure.