Dr. Smita Mishra, Paediatric Cardiologist, Associate Director - Jaypee Hospital, with explain about coarctation of aorta in this video. In coarctation of aorta, the aorta has some kind of stenosis. These babies present themselves when ductus arteriosus is closed which is generally very late. The lower limb pulses of these babies are very weak or absent. Hence, it is recommended that any new born baby suddenly becoming symptomatic should check the femoral artery.