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Current Replies for PDA in Pitbulls
3/13/2009 12:58:02 AM
Posts: 1
Hey, has anyone ever heard of PDA in an American PitBull Terrier?
Do you know the symptoms? My 8 mo old Pitbull is going to be checked for this and I am scared to death. Can anyone tell me anything about this???
3/13/2009 6:22:47 AM
Posts: 409
At birth, mammals must adapt from living in a fluid environment (the amniotic fluid) and acquiring oxygen through the mother's blood, to breathing air and acquiring oxygen through their own lungs. The ductus arteriosus is very important in the adaptation process. This is a small communicating blood vessel between the pulmonary artery (which carries blood to the lungs), and the aorta (which carries blood to the rest of the body). Before birth, most of the blood from the fetal heart bypasses the fetal lungs via the ductus arteriosus. The lungs gradually become functional fairly late in fetal development. At birth, the blood supply from the mother is of course cut off, the dog (or other mammal) begins breathing on its own, and blood flow through the ductus arteriosus decreases dramatically. Within a few days, the ductus closes off completely.

Where the ductus does not close, the dog is left with a patent ductus arteriosus (PDA). The extent to which this affects the dog depends on the degree of patency, or opening, of the ductus. cut and paste this link to see the rest of the article.