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Patent Ductus Arteriosus (PDA) in Dogs (Heart Birth Defect)

Source: PetWave, Updated on August 17, 2016
Patent Ductus Arteriosus in Dogs

Definition of Patent Ductus Arteriosus

The ductus arteriosus is a normal fetal blood vessel connecting the aorta and the pulmonary artery. This allows the blood of unborn puppies to bypass their non-functioning lungs; they get oxygen from their mother. The ductus arteriosus should close shortly before or just after birth, once a puppy takes its first breaths and its lungs inflate. In puppies with a patent ductus arteriosus (“PDA”), this channel stays open. PDAs are considered genetic, although they may be influenced by environmental, infectious, nutritional, pharmaceutical and toxicological factors. PDAs make the heart work too hard. The left heart chambers stretch, reducing blood flow from the heart. Affected dogs tire easily, become weak and lethargic, cough, have trouble breathing and have stunted growth. Many develop seizures and fainting episodes. Left untreated, PDAs will contribute to congestive heart failure and are almost always fatal. They are among the most common congenital heart defects in dogs.

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Disorders Similar to Patent Ductus Arteriosus

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Dog Health Center

Lead Poisoning

Dogs can be poisoned when they ingest lead – especially if they have repeated exposure to the substance. Lead is found in a number of places and in a number of different things

Learn more about: Lead Poisoning