Urinary Blockage in Cats: What You Need to Know
Pet Safety
If your cat is straining in the litter box or crying out in pain, don't wait to get care. It could be a urinary blockage, which is a medical emergency.
What Is a Urinary Blockage?
A urinary blockage (also called a urethral obstruction) happens when something blocks the urethra (the tube that carries urine out of the body). When urine can't flow out, toxins build up in the body quickly.
Male cats are at much higher risk than females because their urethra is much narrower. The most common cause is a "plug" made up of mucus, crystals, and minerals that clump together and get stuck.
If the blockage isn't treated within 24 hours, it can become life-threatening.
Signs of a Cat Urinary Blockage to Watch For
Take your cat to an emergency veterinarian right away if you notice any of these:
Straining in the litter box with little or no urine coming out
Crying or vocalizing in pain
Blood in the urine
Vomiting or loss of appetite
A swollen or hard belly
Lethargy or seeming unwell
When in doubt, get checked out. Even a partial blockage is just as serious as a complete one and needs the same level of care.
What to Expect at the Hospital
When your cat arrives, our veterinary team will feel the abdomen to check the bladder and assess how serious the situation is.
Typical treatment includes:
Relieving the Blockage A urinary catheter is carefully inserted to push or flush the plug back into the bladder. This is painful, so your cat will be sedated. Some cats are harder to unblock than others; in rare cases, surgery may be needed right away.
IV Fluids Your cat will be put on IV fluids to flush toxins from the kidneys, treat dehydration, and restore the body's balance.
Pain Management Medication will be given to reduce pain and calm the irritated urethra.
Hospitalization Most cats need to stay in the hospital for a day or two. During this time:
A urinary catheter stays in place so the team can monitor urine output.
The kidneys work to clear built-up toxins.
Your cat wears a protective collar to keep the catheter in place.
Urine production is measured closely. After a blockage, the kidneys often produce large amounts of urine very quickly.
Your cat will be able to go home once they're urinating on their own with a good, steady stream.
Recovery at Home
Recovery isn't over when your cat leaves the hospital. Your cat is still at risk of blocking again for one to two weeks after discharge. Here's how to care for your cat and what to watch for at home:
Keep an eye on how much urine your cat is producing.
Watch for straining, crying, or bloody urine.
Report any vomiting or loss of appetite to your vet right away.
If you're ever unsure whether your cat has re-blocked, call us. We can check quickly and easily.
Your cat will likely go home with medications and a special prescription diet to help prevent another blockage.
Long-Term Prevention
Most cats recover fully, but some, especially those who block more than once, will need ongoing care. This may include:
A special diet to reduce crystal and stone formation
Increased water intake (wet food can help with this)
Regular vet check-ups to monitor urinary health
When Surgery Is Needed: Perineal Urethrostomy (PU Surgery)
If a cat keeps blocking despite treatment and diet changes, a surgery called a perineal urethrostomy (PU surgery) may be recommended. This procedure widens the urinary opening to make future blockages much less likely.
It's a major surgery, but it can greatly improve quality of life for cats who keep re-blocking. Your vet will talk you through whether it's the right option for your cat.
Have questions? We're here to help.
Urinary blockages can be scary. The good news is that with fast treatment, most cats make a full recovery.
If you have any concerns about your cat's urinary health, or if you think your cat may be blocked, please contact our hospital right away. We're here around the clock to help your pet get the care they need.
The Veterinary Emergency Referral Center
4800 N. Davis Hwy.
Pensacola, FL 32503
(850) 477-3914
