What is gastric dilatation-volvulus (GDV)?

Gastric dilatation-volvulus is an acute condition in which the stomach expands with gas and may rotate on its axis, compromising breathing, circulation, and digestion. It is a veterinary emergency requiring immediate evaluation.

What are the clear danger signs that need immediate emergency care?

Marked abdominal distension, continuous unproductive retching, open-mouth panting, or sudden collapse are all high-risk signs. If any of these appear, go to an emergency veterinary clinic immediately and call ahead to alert the team.

What tests will the vet perform at the clinic?

Common diagnostics include a full physical examination, abdominal X-rays, ultrasound, ECG, and blood work to confirm stomach position and overall condition.

What can I do at home to prepare for the vet visit?

Record the onset time and symptom progression, film the abdomen and any vomit, list recent food and medications, and call ahead to confirm a clinic with X-ray capability is ready to receive you.

How much do the tests and treatment usually cost?

Costs vary by clinic and region — ask your vet for an estimate before proceeding.

Disease Guide

Gastric Dilatation-Volvulus (GDV) in Dogs: Symptoms, Emergency Care & Recovery [2025]

Gastric dilatation-volvulus is a life-threatening emergency in large-breed dogs where the stomach bloats and twists. Signs include unproductive retching, abdominal distension, and collapse. Immediate emergency surgery is required — delays can be fatal.

Take 1 minute to check the symptoms first

Last updated: 2026/01/05

Pethealthmap editorial team

Sources: AVMA, WSAVA, National Taiwan University Veterinary Hospital

When to See a Vet

Seek immediate veterinary care (emergency)

•Breathing becomes very labored or open-mouth panting occurs
•Sudden loss of consciousness or cannot be awakened
•The abdomen rapidly becomes swollen and the pet cannot pass gas or stool

Schedule a clinic visit as soon as possible (within 24-72 hours)

•Persistent repeated vomiting or inability to bring up stomach contents
•The abdomen remains distended, but the pet is still alert and able to move
•The heartbeat is noticeably faster and the pet becomes weak and lethargic

01What symptoms indicate something is wrong?

GDV typically has a sudden onset with obvious abdominal and systemic signs — prompt veterinary assessment is essential.

Sudden deterioration in alertness, lethargy, or visible weakness
Repeated retching or straining to vomit with little or nothing coming up
Visibly distended abdomen that feels tight or drum-like to the touch
Rapid or laboured breathing, or obvious respiratory distress
Rapid, weak pulse or sudden brief loss of consciousness

Seek emergency care immediately if you notice the following symptoms:

⚠️ Severe breathing difficulty or open-mouth panting
⚠️ Sudden loss of consciousness or inability to be roused
⚠️ Marked abdominal swelling with no ability to pass gas or stool

02How to assess the situation at home and when to go straight to emergency

Observations made at home before the vet visit help the veterinarian quickly gauge how urgent the situation is.

Note the time symptoms first appeared and how they have progressed; tell the vet the sequence of events
Count and record breaths per minute and observe whether your pet is panting with an open mouth
Film the abdomen from the front and side using your phone, capturing movement during breathing
Record how often your pet retches, what the vomit looks like, and whether there is any blood
Note whether your pet has passed gas or had a bowel movement, and save photos or video if possible
If severe breathing difficulty or collapse occurs, head to an emergency clinic immediately and call ahead

03How will the vet make a diagnosis? Common diagnostic tests

The veterinarian will combine a physical examination with imaging and blood tests to confirm the stomach's position, blood supply, and overall systemic status.

Physical examination

assess heart and lung function, abdominal palpation, and pain response

Radiographs (X-rays)

confirm gastric distension, gas distribution, and any positional change of the stomach

Abdominal ultrasound

evaluate gastric contents, stomach-wall thickness, and blood flow

Electrocardiogram (ECG)

check for concurrent arrhythmias

Blood work

assess electrolytes, acid-base balance, and organ function

CT scan or surgical specialist consultation may be arranged if needed to determine surgical requirements

04Treatment and aftercare: medications, dietary adjustments, and home care

Treatment includes emergency stabilisation on arrival and inpatient monitoring; follow-up visits and observation for recurrence are needed after discharge.

Intravenous fluid therapy may be started immediately to stabilise blood pressure and electrolyte balance
If gastric pressure is critical, immediate decompression or surgical evaluation will be arranged
During hospitalisation, heart and lung function, abdominal condition, and blood parameters are monitored continuously
Follow your vet's discharge instructions for recheck appointments and track appetite and bowel activity
If signs return or worsen, schedule a clinic visit or return to the emergency hospital without delay

05What to prepare before the vet visit: key information to help the vet quickly identify the problem

Record when symptoms started, how they have progressed, and each change you have noticed

Take photos or video of any vomit or stool for the vet to review

List recent feeding history, portion sizes, and any medications or supplements your pet is receiving

Prepare phone video clips (front and side view) and photos of the abdomen for the veterinarian

Call ahead to confirm a clinic that can perform X-rays is available and find out their intake procedure

This content is for reference only and cannot replace a professional veterinary diagnosis. If your pet shows signs of illness, please seek veterinary care promptly.