A prolapsed rectum is a red, tube-shaped mass pushed out through the anus, and the clock starts the second you see it. Two hours is the working limit. Tissue that stays outside past 120 minutes dries, swells at the base and loses blood flow, and by 4 to 6 hours the surface goes from pink to dark red to black. Do not push it back in and do not pull on it. Cover it with saline-soaked gauze and drive to a vet. Reduction is a veterinary procedure, not a home one.
Why the 2 hour line decides the tissue
Rectal mucosa is thin, wet and built to stay inside. Once it is out, the anal ring acts like a tourniquet: the base swells, venous return stops, and the exposed surface loses water to dry room air. A prolapse that measured 3 cm at 8 a.m. can look 5 cm and purple by 10 a.m. Time matters more than size. A 2 cm prolapse out for 3 hours is more urgent than a 6 cm one out for 15 minutes, because the deciding factor is how long the blood supply has been pinched, not how much tissue you can see.
Three things never to do
- Never pull, tug, or try to push the tissue back inside. The wall is 2 to 3 mm thick when healthy and thinner when inflamed, so a fingernail or a firm thumb tears it, and a tear means surgery instead of a stitch.
- Never apply ice, alcohol, vinegar, alum, or table sugar. These dry the surface and hide the color change the vet needs to see, and ice constricts vessels that are already starved.
- Never give an enema, a laxative, or a meal. An enema pushes pressure against a swollen ring and can perforate the rectum, and food restarts the straining that pushed it out.
If the cat is straining hard, leave it in a quiet room with the carrier door open. Straining is the engine of the whole problem, and every 5 minutes of hard tenesmus adds pressure to the same 20 mm of tissue.
How to move the cat without damaging it
Soak 4 layers of gauze in sterile saline at room temperature, wring it so it does not drip, and lay it over the mass. Do not use paper towel: fibers bond to the mucosa and tear it on removal. Re-wet the gauze every 10 to 15 minutes on the drive. Keep the cat flat in a hard carrier, not on a lap, and keep the rear slightly higher than the head so gravity is not pulling the tissue out.
Call ahead and say the word prolapse, the length in centimeters, and the hour you first saw it. A clinic that knows a 4 cm prolapse arrives in 20 minutes can have saline, lubricant, and a suture pack open on the table before you park.
The two paths a vet chooses between
Path 1 is closed reduction plus a purse-string suture. The vet lubricates the tissue, applies slow steady pressure for 30 to 60 seconds, and it usually slides back. A loose stitch then goes around the anus, leaving a 5 to 8 mm opening so stool and gas can pass. That stitch is checked and loosened daily and removed at 3 to 5 days. Path 2 is surgery: a colopexy, where the rectum is tacked to the abdominal wall, or a resection if more than 1 cm of wall is dead. Surgery is chosen when the prolapse has recurred twice, when the surface is black, or when there is a tear.
| What you see | Minutes out | Color | Expected route |
|---|---|---|---|
| Short tube, cat straining | under 30 | pink and wet | Reduction, 1 visit |
| Swollen base, still wet | 30 to 120 | red, slightly dry | Reduction plus stitch, 3 to 5 days |
| Dried and cracked surface | 2 to 4 hours | dark red | Sedation, saline soak, recheck at 48 hours |
| Black patches, cool to touch | over 6 hours | purple to black | Surgery, 1 to 3 days in hospital |
| Blood or a visible tear | any duration, 0 to 24 hours | bright red | Emergency surgery, same day, 1 visit |
What pushed it out in the first place
In cats the cause is almost always tenesmus, repeated hard straining. Three common triggers: diarrhea from parasites or colitis, constipation with megacolon, and a foreign body or severe cystitis. Fixing the prolapse without fixing the straining gives a 20 to 30 percent recurrence inside 2 weeks. Expect a fecal float, a stool history, and a rectal exam under light sedation. If the diarrhea started after the cat chewed a houseplant, that poisoning is the primary problem: check the toxic plant checker and read the plant emergency guide before you drive.
The 72 hours after reduction
A stool softener is usually continued for 5 to 7 days so nothing has to strain. An Elizabethan collar stops the cat licking a suture line it can reach. Check the stitch twice a day: a purse-string that is too tight shows as a cat squatting for 5 minutes with no result, and that is a call to the clinic, not a wait. Rechecks at 48 to 72 hours and again at 7 to 10 days catch swelling before it becomes a second prolapse.
Red flags on the way back
Return the same day for vomiting, a hard abdomen, no stool for 48 hours, or any tissue showing again. A rectum that prolapses a second time within 24 hours usually needs the surgical path, and each episode leaves the wall a little weaker. A cat that cannot pass urine at all is a separate 24 hour emergency, because a blocked bladder kills faster than a prolapse.
Steps to run, in order
- 0 to 10 minutes: wet gauze on the mass, no touching, phone the clinic.
- 10 to 120 minutes: flat carrier, re-wet every 15 minutes, arrive.
- Hour 2 to 3: reduction plus purse-string, stool softener started.
- Day 1 to 5: check the stitch twice daily, collar on, no bathing.
- Day 7 to 10: recheck, then watch stool consistency for 2 more weeks.
Terms mentioned in this article
Frequently asked
Can I push a prolapsed rectum back in myself?
No. The rectal wall is only 2 to 3 mm thick and swells once it is outside, so a thumb or a fingernail tears it and turns a simple stitch into surgery. Reduction needs lubricant, steady pressure for 30 to 60 seconds, and usually light sedation, which is why it belongs in a clinic within the 2 hour window.
How long can a prolapse stay out before it is unrecoverable?
Pink tissue out for under 30 minutes usually reduces cleanly. Between 30 and 120 minutes the base swells but the surface still recovers. Past 4 to 6 hours dark patches mean dead wall, and any black area larger than 1 cm means resection rather than a purse-string suture, so the drive should never wait for morning.
What causes rectal prolapse in cats most often?
Repeated hard straining, called tenesmus, is behind almost every case: diarrhea from parasites or colitis, constipation with megacolon, or a foreign body and severe cystitis. Treating only the prolapse leaves that trigger in place and gives a 20 to 30 percent recurrence within 2 weeks, so a fecal check and a stool history matter as much as the stitch.