Patent ductus arteriosus (PDA) in dogs is a type of abnormal intracardiac shunt within the heart that is located between the aorta and the pulmonary trunk. When this abnormal shunting of blood develops, extreme pressure builds up in the dog's heart, arteries, and veins due to increased blood pressure. Without treatment, PDA will eventually result in congestive heart failure in dogs.
The only type of treatment option available for patent ductus arteriosus (PDA) in dogs is a surgical procedure which ties off the shunt and restores normal blood flow. While this is the only treatment available, it is extremely effective. The outlook for this surgery is good to excellent.