Rabbit GI Stasis: A Bedside Protocol

PublishedMay 4, 2026Reading time8 minExoticRx Editorial

Editorially reviewed against primary literature. Awaiting credentialed clinical reviewer — our editorial process.

A rabbit that has stopped eating for 12 hours is an emergency. By the time the owner notices "she's just not herself today," the cecal pH has shifted, the dominant Bacteroides fermentation has slowed, and the patient is on the clock. GI stasis is the most common reason a pet rabbit ends up in your exam room, and it kills if you manage it on a canine playbook.

This is the bedside version of what to do, in order, in the first 60 minutes.

What you're treating

GI stasis (ileus, hindgut hypomotility) is a final common pathway from many causes:

• Diet — insufficient long-stem fiber, sudden change of pellet brand, an empty hay rack
• Pain — dental, urinary, post-surgical, anything
• Stress — transport, household disruption, new pet
• Subclinical disease — early E. cuniculus, atypical bacterial enteritis, hepatic disease
• Anesthesia / sedation hangover
• Dehydration — cold weather, illness, water bottle that quietly stopped working

The patient looks anorexic, hunched, lethargic. There may be reduced or absent fecal output, sometimes bruxism (tooth grinding). Severe cases progress to bloat, hypothermia, and shock within 24–48 hours.

The mechanism that kills is the same one that kills with antibiotic dysbiosis: cecal flora collapse, Clostridium spiroforme opportunistic bloom, iota-toxin enterotoxemia. Once that's underway, the prognosis drops fast. The whole point of treating early is to stop the cascade before it gets there.

The first 60 minutes

In rough priority order. With a tech, you can compress this into 30 minutes of parallel work.

1. Assess pain — and treat it before you finish the exam

Pain is the most common driver of stasis. A rabbit hunched in the corner with no fecal output for 18 hours is in pain. The question is where.

Quick exam targets:

• Mouth. Sharp molar spurs, malocclusion, dental abscess. Most common single cause; if you don't have a good light and an otoscope, you're going to miss it. Sedation may be necessary for a real exam.
• Abdomen. Gentle palpation. Doughy stomach (overstretched, non-mobile contents), gas distension (immediate concern — get imaging), tense abdomen (peritoneal pain), painful kidney area.
• Bladder. Urolithiasis, sludge — palpable as a firm mass cranial to the pubis. A blocked rabbit looks like a stasis patient until you palpate.
• Spine, hips, hocks. Arthritis, recent trauma, post-surgical pain.

The empirical analgesic regimen — give before completing the workup if any pain finding is present:

• Buprenorphine 0.03–0.05 mg/kg SC every 6–8 hours. First dose now.
• Meloxicam 1.0 mg/kg PO or SC once daily. Note the dose — rabbits clear meloxicam faster than dogs and cats, and the canine 0.2 mg/kg dose doesn't reach therapeutic levels in lagomorphs. This is the single most common dosing error in primary practice.

Don't wait for a confirmed cause to start analgesia. Treat empirically; revise the plan once you can re-examine a comfortable patient.

2. Fluids

Most stasis patients are 5–10% dehydrated by the time they're noticed.

• SC, warmed Hartmann's: 50–80 mL/kg, divided across two or three sites (lateral thoracic and inguinal are easiest). Onset 30–60 minutes.
• IV (marginal ear vein, lateral saphenous, or cephalic) if the patient is shocky, hypothermic, or you're going to surgery.
• PO absorbs more slowly than SC in a stasis patient. Don't rely on oral fluids for deficit replacement.

Warm the fluids. A 22°C bag of LRS in a 39°C rabbit is a meaningful cold-load.

3. Prokinetics

• Metoclopramide 0.5 mg/kg SC every 8 hours. First-line. Cheap, reliable, mostly upper-GI motility.
• Cisapride 0.5 mg/kg PO every 8–12 hours. Second-line, or first-line when you specifically want hindgut prokinetic action. Sometimes hard to source — practices that see a lot of rabbits stock it.

Don't combine the two routinely; pick one.

Caveat. Prokinetic therapy is contraindicated if you suspect mechanical obstruction (mass, foreign body, severe trichobezoar). Hyper-resonant gas on percussion is a stop sign — get imaging before you push prokinetic.

4. Nutritional support

The rabbit must eat. A few mL of slurry every 4 hours reverses the cecal hypomotility faster than any drug we have.

• Oxbow Critical Care for Herbivores, Supreme Recovery Plus, or a hand-mixed pellet slurry.
• 10–15 mL/kg per feed via syringe, every 4–6 hours.
• Some patients accept a pellet mash from a bowl once analgesia is on board; offer both.
• Long-stem timothy hay should be in front of the patient continuously. Alfalfa is too rich for a stasis patient.

If the first force-feed attempt is difficult, a 30-minute window of analgesia and warm fluids often turns it around. Don't skip the feeding step because the first try was hard.

5. Imaging

If you have access:

• Lateral abdominal radiograph is the standard view: gas pattern, dental disease, urolithiasis, hepatic shadow.
• Ultrasound for the bladder, kidneys, and intestinal wall thickness — useful but not always necessary in straightforward cases.

Imaging is mandatory before prokinetic if there's any suggestion of obstruction. A trichobezoar with metoclopramide on board can rupture the stomach.

6. Bloodwork (when affordable)

The minimum useful set for a stasis case:

• PCV / TP — hydration estimate, hepatic flag (low TP suggests hepatic disease or GI losses)
• Glucose — severe stasis can drop glucose; >300 mg/dL is the warning sign for hepatic lipidosis, which is its own emergency
• BUN + creatinine — dehydration vs. renal disease
• Calcium — rabbits carry a lot of dietary calcium; very high values point at urolithiasis

A CBC adds value but the five above drive most decisions.

7. Hospitalization decision

Discharge criteria after the first 60 minutes:

• Eating something on her own (even slurry from a bowl)
• Drinking water
• Producing any fecal pellets, however small
• Owner can give SC fluids and oral medications every 4–6 hours
• No bloat, no hypothermia, no shock signs

If any of those are missing, hospitalize for 24 hours. The home environment isn't where you want a rabbit who isn't eating.

The 24-hour reassessment

Most uncomplicated stasis cases turn around within 12–24 hours of analgesia + fluids + prokinetic + force-feeding. If the patient is back to normal eating and producing fecal pellets, discharge with:

• Meloxicam PO once daily for 5 days
• Continuing critical-care slurry every 6 hours until pellet output is normal
• Long-stem hay ad lib
• Recheck in 7 days, sooner if relapse

If the patient is not improving at 24 hours:

• Re-image (gas patterns shift over 24 hours and a clear early film can hide a developing problem)
• Re-examine teeth, under sedation if the conscious exam was equivocal
• Bloodwork if you didn't get it on day one — especially glucose for hepatic lipidosis
• Consider a second-line prokinetic
• Consider antibiotic prophylaxis (TMS) if there's any soft-cecotroph or dysbiosis sign

If the patient is deteriorating — worsening bloat, falling temperature, hypoglycemia, neurologic dullness — reassess for a surgical emergency. Acute progressive bloat is a referral or surgical decision: gastric trocarization or laparotomy may be needed, and these are not GP-bench procedures.

Common errors

1. Underdosing meloxicam. Canine doses don't reach therapeutic levels. 1 mg/kg in rabbits, not 0.2.
2. Reflex oral antibiotics. Stasis isn't a bacterial infection. Don't reach for amoxicillin "just in case." Oral β-lactams cause the dysbiosis you're trying to prevent.
3. Skipping the dental exam. Most stasis cases trace to dental pain. Look every time, even if the owner says her teeth were checked recently.
4. "Let's see how she is in the morning." A 24-hour delay in stasis treatment dramatically worsens prognosis. This advice kills rabbits.
5. Cold fluids. Particularly in winter or in an air-conditioned exam room. Warm before administration.
6. Stopping the slurry too early. Fecal output should be normal before you discontinue assist-feeding. Continuing 2–3 days past apparent recovery prevents relapse.

Quick reference

All warmed. All started within the first 30 minutes of presentation when possible.

ExoticRx surfaces 254 active dose rules for rabbits across analgesics, antibiotics, antiparasitics, anesthetics, and GI-support drugs. Browse the rabbit formulary for source-cited live data, or calculate a meloxicam or buprenorphine dose by weight directly.

Sources

• Quesenberry K, Carpenter JW, eds. Ferrets, Rabbits, and Rodents: Clinical Medicine and Surgery, 4th ed. Elsevier, 2020.
• Carpenter JW, Marion CJ, eds. Carpenter's Exotic Animal Formulary, 6th ed. Elsevier, 2023.
• Krempels D, Cotter M, Stanzione G. Ileus in domestic rabbits. Exotic DVM Magazine. 2000;2(4):19–21.
• Lichtenberger M, Lennox A. Updates and advanced therapies for gastrointestinal stasis in rabbits. Vet Clin North Am Exot Anim Pract. 2010;13(3):525–41.
• BSAVA Manual of Rabbit Medicine, 2nd ed. BSAVA, 2014.
• Plumb DC. Plumb's Veterinary Drug Handbook, 10th ed. Wiley, 2024.