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Updated on September 23rd, 2025
Pet's info: Dog | Mixed Breed | Female | unspayed | 2 years old | 5.2 lbs
What is the difference between spaying a dog with pirometra and a dog that does not have pirometra
2 Answers

Answered By Cara, DVM, cVMA
Veterinarian
Published on September 25th, 2017
Answered By Rodrigo Roca, DVM
Veterinarian
Hello, there are several key differences that not only make the surgery higher risk but also more challenging to perform.
The uterus is often enlarged which requires a longer incision to remove. The tissue may be stretched out due to the pus within the uterus and also very inflamed that it tares readily with minimal manipulation. This in particular poses a very high risk for bleeding or contamination into the rest of the abdomen with the pus that resides in the uterus.
Finally, patients are usually very ill from their infection which can predispose them to having complications during or after surgery as opposed to healthy patients having a spay.
This means that for a pyometra we need to make a bigger incision, we have higher chance for complications which means we have to handle tissues with extra care and prepare for these complications, and the medical management before, during, and after surgery is more critical as compared to an elective spay.
Hope this helps
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