When Is Cat Urethral Reconstruction (Perineal Urethrostomy) Warranted?

1 Overview

1. He’s fooling you and already has a plan if it recurs later.

2. He sees the cystitis is mild and would heal with a few days of antibiotics; a skilled vet lets mild cases heal. Doing PU on a cat that only needed antibiotics means it’ll seem fine for a while.

3. Mild cystitis but severe urethral damage — good surgical outcome.

Some cats get forceful catheterization that irreversibly damages the urethra, even ruptures it, untreatable by meds — these need PU. Also cats fully blocked with no other option — PU saves lives.

Too many stones/crystals, prone to repeated blockage — PU advised

PU recurs soon because the bladder is already hypertrophied; PU only widens the urethra and does little for cystitis — basically a wasted surgery.

Most cats with recurring urethritis and blockage have unhealthy bladders, so they relapse after PU.

What are PU’s sequelae

Choose an experienced surgeon; I’ve seen over a hundred PU cats.

Sequelae include:

1. Post-op tissue overgrowth re-blocks the urethra, needing a second PU.

2. Inflammation can’t be controlled, the cat stays in hospital, wound won’t heal.

If your cat is normal for a while after PU, the surgeon and aftercare are solid — but relapse is still inevitable.

Because the root isn’t the urethra but the bladder; sterile cystitis roots in diet.

Harmful food ingredients chronically irritate the bladder wall, thickening it, growing crystals that shed and block the urethra.

Deeper causes are just two:

1. Male cats have tiny penises (vs dogs of same size); harmful bladder contents can’t exit easily — mostly males are affected.

3. Long-term kibble feeding — even the best kibble is just hard biscuits; long-term it damages the bladder.

Cystitis is chronic; mild cases show little urine, severe ones slow/dribbling urination; when acute, with bacterial infection, cats show frequent urination, leakage, pain, sometimes sudden blockage → kidney failure and complications. So an expensive surgery that only widens the urethra yields little.