What Is Dog Bloat (GDV)?
Gastric Dilatation-Volvulus (GDV) — commonly called bloat — is one of the most rapidly fatal conditions in dogs. It occurs in two stages: first the stomach fills with gas, fluid, or food and expands dramatically (dilatation). In many cases this is followed by the stomach twisting on its own axis (volvulus), trapping the gas inside and cutting off blood supply to the stomach wall and spleen. Without emergency surgical intervention GDV is fatal within hours. Even with immediate surgery the mortality rate is 10–30% depending on how advanced the condition is at the time of treatment. GDV is an absolute veterinary emergency — if you suspect your dog has bloat, drive to the nearest emergency veterinary hospital immediately.
Which Dogs Are at Risk?
GDV predominantly affects large and giant breeds with deep narrow chests. Highest-risk breeds include the Great Dane with an estimated 37–42% lifetime chance of developing GDV, as well as Standard Poodles, German Shepherds, Weimaraners, Saint Bernards, Gordon and Irish Setters, Doberman Pinschers, Old English Sheepdogs, and Basset Hounds. Additional risk factors include being male, being older, having a first-degree relative with GDV history, eating one large meal per day, eating rapidly, exercising immediately after meals, and being underweight or anxious. Raised food bowls — once thought to be preventive — have been shown in studies to increase GDV risk in large breeds and are no longer recommended.
Recognising the Signs of Bloat in Dogs
Unproductive retching is the most characteristic sign — the dog is clearly trying to vomit but nothing or only white foam comes up. A visibly distended abdomen appears round and tight, particularly on the dog’s left side, and may sound hollow when tapped. Restlessness and pacing mean the dog cannot settle and appears distressed. Excessive drooling occurs due to nausea. As GDV progresses signs of shock develop: gums turn pale or white, breathing becomes rapid and shallow, the heart rate is elevated, and the dog may collapse. Act immediately if you see unproductive retching and a distended abdomen in a large or deep-chested breed.
How GDV Is Treated
Treatment requires emergency veterinary care and is almost always surgical. On arrival the dog is placed on IV fluids to treat shock and oxygen may be provided. Gastric decompression involves passing a tube into the stomach to release gas. Surgery repositions the stomach to its correct location and surgically attaches it to the abdominal wall (gastropexy) to prevent future rotation. The viability of the stomach wall and spleen is assessed and sections that have died from lack of blood supply must be removed. Post-operative monitoring continues for 24–72 hours for cardiac arrhythmias, a common and potentially fatal complication.
Prevention of GDV in High-Risk Dogs
For high-risk breeds prophylactic gastropexy is strongly recommended — a surgical stomach tacking performed electively, often at the time of spay or neuter, to permanently prevent future rotation. Feed multiple small meals by dividing daily food allowance into two or three meals. Use slow-feeder bowls or interactive food puzzles to reduce the rate of food consumption. Restrict vigorous exercise for at least one hour before and two hours after meals. Feed at floor level, not from raised bowls. Know the signs and identify the nearest 24-hour emergency vet before you need one. Find an emergency veterinary clinic near you on HeiBob before an emergency occurs.