[gemy]

Originally Posted by DvlshAngel985

I'm not a breeder, but if in your shoes, I would have this boy neutered ASAP. If you've bred biewers in the past, and have been keeping accurate records, you'd know if your females lines have produced PDA (sorry, don't know what that is) in the past. You'd know to look for clues in each dam's line, going back a few generations. If that doesn't pinpoint the problem, start looking at the studs lines, and see if any of the dogs in his lines are producing the same problem. That's why an accurate record of breedings and results are needed.

I hope someone more experienced can help with your dilemma.

Here is what it is

Patent ductus arteriosus, or PDA, is a heart defect that presents in young dogs. It develops shortly after birth, and though it is a serious condition, it can be successfully treated with surgery.



Development

PDA develops when a specific blood vessel used by the fetus during pregnancy doesn't close off after birth. It creates an abnormal blood flow in the dog's heart.
Risk Factor

PDA is the most common congenital heart defect found in dogs, and it is more common in females. At-risk breeds include Pomeranians, German shepherds, Yorkshire terriers, chihuahuas and others.
Early Signs

Coughing, weight loss and decreased tolerance of exercise are all symptoms of PDA in dogs. Eventually it escalates into congestive heart failure and probable death.
Treatment

Surgery should be performed as early as possible---dogs as young as 8 weeks are able to undergo the procedure. The operation ties off the blood vessel in question.
Survival and the Future

When recognized and treated early in life, the rate of survival for dogs with PDA is typically very good. Owners are advised not to breed dogs that have suffered from PDA.



Read more: PDA & Canine Disease | eHow.com PDA & Canine Disease | eHow.com