PUP SUN I T E .ORG | 12 petshealth by R. JEFFREY SCHUMANN, DVM, MS NORTHSIDE VET CLINIC Pyometra in Dogs Pyometra is a bacterial infection of the uterus. In dogs, the most common culprit of infection is E. Coli which is found in feces. Other causes can be from an ascending vaginal infection, or a concurrent urinary tract infection. Pyometra is typically diagnosed in intact female dogs aged 3 years and older, though it is occasionally seen in younger intact female dogs as well. When a dog goes through a heat cycle, a hormonal imbalance takes place that increases the risk of development of infection. When bacteria is introduced, infection occurs and the uterus becomes filled with pus. Early symptoms of pyometra infection include lethargy, decreased appetite or refusal to eat, increased thirst and urination, and vomiting. There may or may not be a malodorous dark colored vaginal discharge, or your dog may be licking their vulva more than usual. Dogs who have developed a pyometra infection may also experience an “extended” heat cycle. If your dog exhibits any of these symptoms, it is imperative to see your veterinarian immediately as pyometra is a life-threatening emergency. The veterinarian will get a complete medical history on your dog and do a physical examination. Bloodwork will be performed to check for marked elevation of the white blood cell count and globulin levels. The bloodwork will also help indicate whether the patient has developed sepsis or organ damage has occurred. Additional diagnostics will vary with the degree of illness the patient is experiencing. A urinalysis may be performed to confirm low urine concentration which is a direct result of the dog drinking unusually
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