Pyometra is a life-threatening uterine infection that occurs in unspayed female dogs, typically 4–8 weeks after a heat cycle. Pus fills the uterus, and without emergency surgery, the uterus can rupture and cause fatal peritonitis. Pyometra is 100% preventable by spaying before the first heat.
The average cost of dog pyometra surgery is $2,000, with most owners paying between $1,000 and $3,000 for emergency spay (ovariohysterectomy).
How Much Does Pyometra Surgery Cost?
| Type | Cost Range | Average | Notes |
|---|---|---|---|
| Open pyometra (cervix open — pus draining) | $1,000–$2,500 | $1,800 | Less urgent — pus is draining out |
| Closed pyometra (cervix closed — pus trapped) | $1,500–$3,500 | $2,500 | EMERGENCY — uterus can rupture, fatal without surgery |
| Pyometra + ruptured uterus (peritonitis) | $3,000–$6,000+ | $4,500 | Most critical — requires abdominal flush + IV antibiotics |
| Medical management (prostaglandin therapy — RARE) | $500–$1,500 | $1,000 | Only for breeding dogs — high recurrence rate |
Cost Breakdown
| Component | Cost |
|---|---|
| Emergency exam + diagnostics (X-rays, ultrasound, blood work) | $200–$500 |
| IV fluids (critical — most dogs are dehydrated and septic) | $50–$150 |
| IV antibiotics (pre-surgical) | $50–$150 |
| Emergency spay (ovariohysterectomy) | $800–$2,500 |
| Histopathology (examine uterus — confirm diagnosis) | $120–$350 |
| Overnight hospitalization (2–4 nights) | $400–$1,500 |
| Take-home antibiotics + pain medication | $40–$100 |
| Follow-up visit | $50–$150 |
| Total | $1,710–$5,400 |
Cost by Clinic Type
| Clinic Type | Price Range |
|---|---|
| General practice (daytime, open pyometra) | $1,000–$2,500 |
| Board-certified surgeon | $1,500–$3,500 |
| Emergency hospital (after-hours) | $2,000–$5,000+ |
| Teaching hospital | $1,200–$2,500 |
Signs of Pyometra — When to Seek Emergency Care
Pyometra typically develops 4–8 weeks after a heat cycle. Watch for:
If your unspayed female dog shows any of these signs 4–8 weeks after a heat cycle, go to a vet immediately. Closed pyometra can be fatal within 24–48 hours.
- •Vaginal discharge: Pus-like, bloody, or foul-smelling (open pyometra). May not be present in closed pyometra.
- •Excessive drinking and urination (PU/PD)
- •Lethargy and weakness
- •Loss of appetite
- •Vomiting
- •Fever
- •Swollen abdomen (especially in closed pyometra — uterus is enlarged with trapped pus)
- •Collapse (emergency — uterus may have ruptured)
Open vs. Closed Pyometra
| Factor | Open Pyometra | Closed Pyometra |
|---|---|---|
| Cervix | Open — pus drains out | Closed — pus trapped inside |
| Urgency | Urgent — surgery within 24 hours | EMERGENCY — surgery immediately |
| Rupture risk | Lower (pressure relieved by drainage) | High — uterus can rupture at any time |
| Survival rate | 95–98% with prompt surgery | 85–95% (lower due to toxemia) |
| Cost | $1,000–$2,500 | $1,500–$3,500+ |
Frequently Asked Questions
How much does pyometra surgery cost?
Dog pyometra surgery (emergency spay) costs $1,000 to $3,500, with an average of $2,000. Open pyometra costs $1,000–$2,500. Closed pyometra costs $1,500–$3,500+. If the uterus has ruptured (peritonitis), costs can reach $3,000–$6,000+. Total including diagnostics, hospitalization, and medications is $1,700–$5,400.
Does pet insurance cover pyometra surgery?
Yes, most pet insurance covers pyometra surgery including diagnostics, emergency surgery, hospitalization, and medications. Reimbursement is 70–90% after your deductible. Since pyometra is a disease (not pre-existing unless your dog had it before enrollment), it should be covered.
Can pyometra be treated without surgery?
Medical management (prostaglandin therapy) exists but is only recommended for breeding dogs and has a high recurrence rate (70%+). The pus-filled uterus remains a constant risk. Surgery (spay) is the only definitive treatment. Most vets strongly recommend surgery as it removes the infection entirely and prevents recurrence.
How can I prevent pyometra?
Spaying your dog before her first heat cycle virtually eliminates the risk of pyometra. Even spaying later in life prevents it. Pyometra affects 25% of unspayed females by age 10. A routine spay costs $200–$2,000 — much less than an emergency pyometra surgery ($1,000–$3,500+) and without the life-threatening risk.
What happens if pyometra is left untreated?
Untreated pyometra is almost always fatal. The pus-filled uterus can rupture, causing septic peritonitis (infection throughout the abdomen), sepsis (blood infection), and death. The timeline from diagnosis to death can be as short as 24–48 hours for closed pyometra. Emergency surgery is the only treatment.