Patent Ductus Arteriosus (PDA) is a congenital heart defect commonly seen in dogs, where a small blood vessel called the ductus arteriosus fails to close after birth. This condition causes abnormal blood flow between the aorta and the pulmonary artery, leading to excessive strain on the heart and lungs. Left untreated, PDA can result in congestive heart failure and significantly shorten a dog’s life expectancy. PDA surgery is a critical intervention to correct this defect. The procedure typically involves either surgical ligation or minimally invasive catheter-based closure of the abnormal vessel. Surgical ligation requires an experienced veterinary surgeon to access the heart and tie off the vessel, while catheter-based techniques use a device inserted via a blood vessel to block the PDA.