A drum-tight abdomen with unproductive retching and drooling is the classic pattern of gastric dilation and volvulus (GDV). The belly can double in size in 10 minutes, and the window before the stomach wall starts to die is measured in hours. Do not press the belly, do not wait for a vomit that will not come, and drive.
Why the first 10 minutes decide the outcome
The stomach fills with gas and rotates on its own axis, usually between 90 and 360 degrees. That rotation closes both the pylorus and the cardia, so the gas has no exit in either direction. Pressure inside the stomach rises, the wall stretches thin, and the distended organ presses on the caudal vena cava, which cuts venous return to the heart. Blood pressure falls before the cat looks collapsed, which is why a cat that is still walking can already be in shock.
Two clocks run at once. The circulatory clock is short: reduced venous return plus a stretched gastric wall can produce decompensated shock within 1 to 2 hours. The tissue clock is longer: wall necrosis threatens from 3 to 4 hours onward, and perforation follows. Cats that reach surgery within 4 to 6 hours generally do far better than cats that arrive after 8 hours, so every 10 minutes of delay is a real cost.
What it looks like at home
Four signs together should end the discussion: retching with nothing coming up, every 2 to 5 minutes; a belly tight like a balloon and painful to the lightest touch; drooling or lip smacking with pacing; and a cat that cannot settle, standing with elbows out or lying head down. In cats a distension of 2 to 3 cm across the flank is already significant. A cat that paddles instead of retching is seizing, which is a different emergency: seizure cluster emergency.
Percussion in 3 zones
Percussion means tapping 2 fingers against the flank in 3 zones, 5 seconds each, with the cat standing if possible.
- Zone 1, left cranial flank just behind the last rib: a hollow, high-pitched drum note here fits gas in a displaced stomach.
- Zone 2, left mid to caudal flank: a dull note suggests fluid or a solid organ where gas should be, which supports displacement rather than simple bloat.
- Zone 3, right side, same height: a drum note on the right is abnormal and points to the stomach having crossed the midline.
Percussion is a 15-second triage tool, not a diagnosis. Note which zone was hollow and which was dull; the vet will repeat the same 3 taps on arrival.
Four shock indicators
Check all 4 in under 60 seconds. Two or more means shock.
- Heart rate: normal for a cat is roughly 160 to 220 beats per minute. Above 220, or below 140 in a cat that was just pacing, is abnormal.
- Gum color and capillary refill: lift the lip. Pink is normal, and color should return within 2 seconds after pressing the gum. Pale, grey, or white gums, or a refill over 2 seconds, means poor perfusion.
- Femoral pulse: place 2 fingers high on the inside of the thigh. A weak, thready, or uneven pulse is a shock sign even if the cat is standing.
- Consciousness and temperature: a cat that is dull, wobbly, or down, or a rectal temperature under 37.5 °C, has lost the ability to compensate.
| Stage | Time window | Key number | Action |
|---|---|---|---|
| Distension | 0 to 10 min | Belly up 2 to 3 cm | No pressure, drive |
| Compensated shock | 1 to 2 h | Heart rate above 220 | IV fluids |
| Wall ischemia | 3 to 4 h | Necrosis from 3 to 4 h | Surgery |
| Perforation risk | 4 to 6 h | Survival drops after 8 h | Surgery now |
| Post-op watch | 24 to 48 h | Arrhythmia peak in 2 days | ECG monitoring |
Never press the abdomen
Pressing, kneading, or lifting the belly is the single most damaging thing an owner can do. A rotated, gas-distended stomach has a wall stretched to a fraction of its normal thickness, and firm pressure can rupture it or complete the rotation.
Skip these as well: no water or food by mouth, no simethicone or human anti-gas drops, no oil, no walking to help it burp, no waiting for a bowel movement. None relieve a mechanical obstruction, and oral fluids before anaesthesia at 2 hours only add vomiting risk. Plant material can cause a similar picture; check the toxicity tool.
Transport: 15 to 20 minutes, flat and warm
Call the clinic while you find the carrier and say the 4 words that move a cat to the front of the queue: bloated abdomen, unproductive retching. Add the shock indicators you measured, the last time the cat ate, and whether it has had a previous episode. Ask whether the practice has a surgeon on site tonight, because a clinic without surgical cover will only stabilize and refer, which costs 30 to 60 minutes.
Carry the cat level, in a carrier on the floor, not on a lap. Keep the cabin at 20 to 22 °C and drape a blanket over the carrier if the cat is shivering. Do not let a wobbly cat walk to the car.
The first 60 minutes at the hospital
Treatment order is fluid, decompression, imaging, surgery. Expect 2 IV catheters within 10 minutes and shock doses of crystalloid, 60 to 90 mL/kg, in boluses while heart rate and pulse quality are rechecked every 5 to 10 minutes. Decompression comes next, by trocar with a 14 to 16 gauge needle at a marked point, or by passing a gastric tube after the stomach is partly deflated. X-rays or a fast ultrasound confirm the position before the cat goes to theatre, usually within 60 to 120 minutes of arrival.
Surgery means derotation, assessment of the gastric wall, and a gastropexy to stitch the stomach to the body wall. Post-operative care includes 24 to 48 hours of heart rhythm monitoring, because arrhythmias are common in the first 2 days, plus pain control and a gradual return to water at 12 to 24 hours.
After discharge and prevention
Feed 3 to 4 small meals a day instead of 1 large one, and avoid vigorous play for 60 minutes after eating. Fast eaters do better with a wide shallow bowl. Weigh the cat weekly for the first month; a loss over 5 percent of body weight is worth a call. A gastropexy substantially lowers the risk of a repeat rotation and changes nothing owners notice.
Five steps to run right now
- Look at the belly and count the retches for 60 seconds; write the number down.
- Tap the 3 zones for 5 seconds each and note which side is hollow.
- Check pulse, gums, refill time, and temperature in under 60 seconds.
- Call the clinic, say bloated abdomen and unproductive retching, and confirm a surgeon is on site.
- Carry the cat level to the car, keep the cabin at 20 to 22 °C, and drive without pressing the belly once.
Frequently asked
How fast does GDV progress in a cat?
Fast. The abdomen can distend within 10 minutes, decompensated shock can develop in 1 to 2 hours, and the stomach wall is at risk of necrosis from 3 to 4 hours, so surgery within 4 to 6 hours gives a far better outcome than arriving after 8.
Can I relieve the gas by pressing the belly?
No. A rotated, gas-filled stomach has a wall stretched thin, and firm pressure can rupture it or complete the rotation; it also hurts enough that a shocked cat may bite. Tap 3 zones with 2 fingers instead and let the vet decompress with a needle or tube.
Which shock signs should I report on the phone?
Heart rate above 220 or below 140, gums that are pale or grey with a refill over 2 seconds, a weak femoral pulse, and a rectal temperature under 37.5 C. Two or more of the 4 means drive immediately and say bloated abdomen with unproductive retching.