In this article
Your dog keeps trying to be sick, but nothing comes up. They cannot settle, pacing away and returning to you. You may be looking for an obvious swollen tummy to decide whether this is serious. With gastric dilatation-volvulus, usually shortened to GDV, the swelling is not always easy to see1.
Call your vet or their out-of-hours service immediately if you suspect GDV. It is a life-threatening emergency that can worsen quickly. Do not wait for every sign to appear or for things to improve1.
The rest of this article is for understanding and preparation. If those signs are happening now, the useful next step is the call, not reading to the end.
Recognise the pattern without waiting for certainty
PDSA lists retching with little or nothing produced, pacing, panting, drooling, pale gums, breathing difficulty and collapse among possible GDV signs. The abdomen may be enlarged, but it can sit partly under the ribcage and be less obvious than expected. You cannot rule GDV out by looking at the dog's outline1.
Give the practice a plain description: “He is repeatedly trying to vomit and nothing is coming up.” Add what else you can see and when it began. You do not need to tell the receptionist that you have confirmed a twisted stomach. Your observations are enough to start the urgent conversation.
What the twist does
GDV begins with distension of the stomach and involves it twisting, trapping contents and gas. The twist can compromise its blood supply. The enlarged stomach also presses on major abdominal vessels, reducing blood return to the heart, and can make breathing difficult by pressing against the diaphragm2.
This explains why the problem reaches beyond a painful tummy. Shock, tissue damage and abnormal heart rhythms can follow. Cornell's veterinary guidance describes it as a condition requiring immediate medical and surgical treatment. The speed of those effects is the reason for the urgency, even when the first outward signs seem comparatively small2.
GDV specifically includes twisting. You cannot safely distinguish it from distension alone at home. Veterinary assessment may include X-rays and blood tests; the American College of Veterinary Surgeons also describes ECG monitoring for abnormal heart rhythms4.
It helps to separate your role from the hospital's. You notice a concerning change and get the dog assessed. The team identifies the problem, stabilises the patient and explains the treatment choices. You do not have to work through a diagnostic puzzle before the dog is allowed to need help.
What happens at the hospital
Emergency treatment can include fluids, pain management and releasing stomach pressure. Surgery corrects the twist and lets the vet assess the stomach wall and spleen. Some dogs need damaged tissue removed. These are hospital procedures, with decisions tailored to the patient4.
During treatment, the stomach is usually fixed to the abdominal wall with a gastropexy to reduce the chance of another twist. After surgery, monitoring continues because complications, including heart rhythm changes, can occur. Getting through the operation is one stage of care; recovery requires attention afterwards too4.
Ask the team what the immediate priorities are, when they expect to update you and which decision comes next. If you need costs or options explained, say so clearly. Write down the name of the person you spoke to and the next agreed contact time. Those small details can make an overwhelming evening easier to follow.
Read survival figures with their denominator
A 2017 UK study analysed emergency-care records from 77,088 dogs attending 50 clinics between September 2012 and February 2014. It identified 492 presumptive GDV cases. Among cases arriving alive, 49.7% survived to discharge overall; among those treated surgically, 79.3% survived to discharge5.
These figures answer different questions. The overall group and the surgical group are different populations, and the study was not a randomised comparison of operating versus not operating. It would be misleading to treat either percentage as a precise forecast for the dog in front of you. The attending vet can explain that dog's condition and options5.
The word “presumptive” also matters: the study used clinical records of suspected diagnoses in an emergency caseload. Its frequency cannot be read as the proportion of all UK dogs that develop GDV. When you see a frightening percentage online, look for the population, the outcome measured and the time period5.
Prevention advice is not a guarantee
A recent Dog Aging Project study used information from 47,444 US dogs, including 170 owner-reported GDV events. Larger body size, male sex and Poodle or Poodle-mix status were among the associations it identified. It did not find increased odds associated with primary diet type, number of daily meals or reported anxiety6.
That does not establish that feeding habits can never matter. This was an observational nested case-control analysis using owner reports, not a trial assigning dogs to feeding routines. Its findings sit alongside older research and veterinary recommendations. They challenge tidy prevention stories, without providing a single replacement rule that makes every dog safe6.
The report appeared online in December 2025 and in a 2026 journal issue. Its practical emphasis is identifying higher-risk dogs and discussing signs and preventive surgery. It is not evidence that an owner caused a particular emergency by choosing the wrong food or failing to make a dog sufficiently calm6.
Use routine feeding questions as part of your own veterinary discussion, especially if other medical needs affect how your dog eats. Try to leave that conversation with one workable plan, rather than collecting conflicting internet rules and changing several things each week.
What a preventive gastropexy can offer
A prophylactic gastropexy attaches the stomach to the body wall before a GDV episode occurs. ACVS describes it as an option to discuss for at-risk dogs, including some large or giant breeds and dogs with a close relative that has had GDV. It requires an individual assessment of health, anaesthetic and surgical considerations3.
It can be performed using different surgical approaches, including minimally invasive techniques. Recovery still needs management, and complications such as wound swelling or infection are possible. Ask your vet about suitability, timing, the approach available and the aftercare you could realistically provide. A planned operation deserves a proper discussion3.
A 2025 RCVS Knowledge review appraised 16 studies of recurrence after gastropexy in dogs already treated for GDV. Recurrence was generally reported as low, but the reviewer rated the evidence weak because of study limitations, including follow-up and inconsistent definitions. The review did not establish a lifetime prevention rate for healthy dogs undergoing elective surgery7.
The distinction is useful when asking what surgery can achieve. ACVS explains that a gastropexy aims to prevent twisting; it does not stop the stomach becoming distended. A dog with a previous gastropexy still needs assessment for concerning abdominal signs4.
Make the emergency plan an ordinary household note
A plan everyone can find
- Your usual practice and its out-of-hours arrangements.
- The address and route to the emergency service.
- Who can drive and who can stay with the dog.
- The same details for the sitter or dog walker.
Put your practice's out-of-hours arrangements beside the everyday contact details, and check who would drive if the usual driver were away. Anyone caring for your dog should know where that information lives. Include the dog walker, sitter and the relative who only occasionally takes over tea-time duties.
You do not have to spend every evening expecting an emergency. Having a short, shared plan lets you return your attention to the dog beside you, with the important decision already made if repeated empty retching begins.
Sources and further reading7 sources
The small numbers in the article link to the source behind each fact. Sources open on their own websites.
- GDV (Gastric Dilatation Volvulus) in dogs
- Gastric dilatation volvulus (GDV) or “bloat”
- Prophylactic Gastropexy
- Gastric Dilatation-Volvulus
- Gastric dilation-volvulus in dogs attending UK emergency-care veterinary practices: prevalence, risk factors and survival
- Gastric dilatation-volvulus is associated with Poodle breeds, increased body size, and male sex…
- In dogs with gastric dilatation volvulus (GDV) undergoing gastropexy, what is the rate of recurrence of GDV?