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Exocrine pancreatic insufficiency

The pancreas has 2 functional parts. The endocrine part secretes insulin and glucagon, which are essential for the metabolism of carbohydrates. The exocrine part consists of units called acini that produce and secrete enzymes essential for the digestion of protein, into the small intestine.

With exocrine pancreatic insufficiency (EPI), there is gradual wasting away (atrophy) of the acini. Clinical signs do not develop until most of the acini are gone. As dogs lose the ability to digest protein, they progressively lose weight despite a voracious appetite.

What breeds are affected by exocrine pancreatic insufficiency?
There is a genetic predisposition to this disorder in the German shepherd. It also occurs sporadically in dogs of other breeds.

For many breeds and many disorders, the studies to determine the mode of inheritance or the frequency in the breed have not been carried out, or are inconclusive. We have listed breeds for which there is a consensus among those investigating in this field and among veterinary practitioners, that the condition is significant in this breed.

What does exocrine pancreatic insufficiency mean to your dog & you?
Affected dogs lose weight despite voracious appetites, and usually pass large amounts of semi-formed feces. They often eat their own stools, or other inappropriate substances.

Some dogs with this condition do not show these typical signs, and may experience intermittent watery diarrhea or vomiting.

How is exocrine pancreatic insufficiency diagnosed?
The clinical signs of weight loss and increased appetite may occur with malabsorption of nutrients due to a variety of causes. Routine diagnostic tests will eliminate some of these as possibilities. Once EPI is suspected, there are specific laboratory tests that will diagnose this disorder.

How is exocrine pancreatic insufficiency treated?
Although this disorder can not be cured, management is generally fairly straightforward. Powdered pancreatic enzyme extract is mixed in with each meal. Within a few days, your dog's appetite and stools should become more normal, and s/he will begin to gain weight. Your veterinarian will work with you to determine the best regime (what dose of extract, 1 or 2 feedings per day) to keep your dog free of clinical signs. Enzyme supplementation of your dog's food will be necessary for life.

Some dogs fail to gain weight despite treatment, and this may be due to chronic bacterial overgrowth. A course of antibiotic therapy may be useful in these dogs.


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About Your Dog, is your online ressource of articles on puppy and dog health, dog training and information about your pet dog