08/11/2025
We have been seeing A LOT of dogs with Pyometra, that I felt we needed to make an educational post.
A common theme in these dogs is that people have never heard of Pyometra, and are caught completely off guard by the diagnosis, so let’s talk about it.
A Pyometra is a uterine infection that occurs when a female dog goes through multiple heat cycles, and is not bred. With each heat cycle the uterine lining becomes thicker and thicker, and creates the perfect environment for bacteria to overgrow. This causes the uterus to fill with pus and makes these dogs very sick.
The symptoms of a Pyometra are lethargy, inappetance, vomiting, increased thirst, and sometimes vaginal discharge.
The treatment for Pyometra is an ovariohysterectomy (spay).
The other things that I have noticed that people are unprepared for is the cost difference between the two procedures. The average spay can vary between $400-1000 depending on where the procedure is performed, while the cost of a Pyometra can be $2500-5000 depending on where it is performed.
Why the difference for the same procedure??? These procedures, while doing the same technique, are NOT the same…. A uterus with a Pyometra can weigh a few pounds, and all of the tissue is infected. This makes the tissue more friable, and the risk associated with the surgery much higher. The blood vessels of the ovaries and uterus are very dilated, and are more easily torn during surgery, and require different suture, or a special device called a vessel sealer. The biggest difference… these dogs are VERY sick. They need IV medications for vomiting, dehydration, antibiotics, and possibly low blood pressure. We often find them in kidney failure, which requires 3-4 days of intense hospitalization and monitoring.
The hard part for the veterinary staff when this diagnosis is made… knowing this awful disease is 100% preventable. Most clients think the spay procedure is only to prevent unwanted pregnancies, until I put an ultrasound on their dogs belly, and give them the bad news. Because they have never heard of the disease, and are unprepared for the associated cost to treat their dog, we are all left scrambling to try and fix her.
When I first became a veterinarian I would do 1-2 Pyometra surgeries a year. I am now doing 3-5 of these a month. That is a huge increase in a short amount of time. I often wonder why??
These are my thoughts… in the last few years there has been a push to spay later in life to decrease the risk of orthopedic disease in large breed dogs. While I do see the reason for this, what has also happened, is people realize that a heat cycle a few times a year isn’t so bad, so why spay them “unnecessarily” if the risk of unwanted pregnancy is very low. But… they don’t know about this disease that is lurking in the background just waiting to present its ugly head.
My number one job as a veterinarian is to educate my clients about the risks to their pets, so I felt it was time to make this post. This is a disease I HATE, when I diagnose it. People are often stunned, feel guilt, and often financially unprepared to treat, then everyone is left scrambling to come up with the best plan possible.
If you take away one thing from this… a routine spay on a healthy dog costs way less than the same procedure for a Pyometra. Please please please spay your dogs! If you have a female intact dog, get them scheduled today! Get them on the wait list for the humane society, get them scheduled with your regular veterinarian. Remember about the evil that is lurking with every heat cycle they go through.
**cats can also get this disease, but we see it much less often in cats, because unspayed cats can be very annoying with their constant heat cycles, so cats are spayed at a higher rate**