Ductus arteriosus is a normal communication between Pulmonary artery and aorta in foetus , which closes within 48 hours after birth naturally but sometimes it fails to close which became pathological and giverise symptoms of congestive cardiac failure , baby fails to thrive. Its closure may be fecilitated by medical means such as prostaglandin inhibitors eg: Indomethacin if it did not close and baby is symptomatic then surgical closure or device closure should be done .