Bloat (GDV)

GDV progresses rapidly. The signs below may appear over minutes to a couple of hours — do not wait for all of them to be present before acting.

• Unproductive retching: the dog heaves, gags, or tries to vomit repeatedly but produces nothing or only white foam — this is the cardinal warning sign
• Visibly distended abdomen: the belly swells, sometimes dramatically, and may sound hollow when tapped
• Restlessness and inability to get comfortable: the dog paces, lies down, gets up, and cannot settle
• Drooling excessively
• Pale or white gums: a sign that circulation is failing and shock is developing
• Rapid, labored, or shallow breathing
• Weakness, collapse, or profound lethargy
• Rapid heart rate (you may be able to feel this by placing a hand on the chest)

If your dog shows unproductive retching and abdominal swelling together — even if the other signs are absent — this is an emergency. Do not give food or water. Drive directly to a veterinarian.

The exact trigger for GDV isn't always identifiable, but several risk factors are well-established. Most are related to anatomy, breed, and feeding behavior.

• Breed and conformation: deep-chested, large and giant breeds carry dramatically elevated risk — Great Danes, Standard Poodles, German Shepherds, Weimaraners, Saint Bernards, Doberman Pinschers, Gordon Setters, and Irish Setters are among the most at-risk
• Body size: the risk increases with each additional inch of chest depth
• Prior history: a dog that has had GDV once is at high risk for a repeat episode
• Feeding patterns: eating a single large meal daily, eating very rapidly, and exercising immediately before or after a large meal are consistently associated with GDV
• Eating from elevated bowls: contrary to past belief, elevated feeders do not reduce — and may increase — GDV risk
• Anxiety and temperament: fearful or nervous dogs may have a higher incidence
• Age: risk increases with age, though GDV can occur in younger dogs of predisposed breeds
• Family history: a first-degree relative with GDV increases risk

Diagnosis is rapid — it has to be. A classic presentation in a large-breed dog with unproductive retching and abdominal distension is treated as GDV until proven otherwise. Diagnostic steps happen simultaneously with stabilization, not sequentially.

• Physical examination and vital signs: heart rate, pulse quality, gum color, and capillary refill time assess the degree of shock immediately
• Digital radiographs: a single lateral X-ray typically shows the "double bubble" sign of a twisted stomach — the pylorus (outflow portion of the stomach) displaced and trapped, producing two distinct gas-filled compartments
• IV catheter and blood pressure monitoring: placed simultaneously with imaging to begin stabilization
• Blood chemistry and lactate level: lactate predicts the viability of the stomach wall and guides surgical decision-making; very high lactate often means a portion of the stomach has died and will need to be removed
• Cardiac monitoring: ventricular arrhythmias are a common and dangerous complication of GDV, requiring ECG monitoring before and after surgery

Emergency surgery is the definitive treatment for GDV. No dog survives GDV without it. Stabilization happens first, but surgery cannot be delayed long once the diagnosis is confirmed.

• Rapid IV fluid resuscitation: large volumes of IV fluids counteract shock and restore circulation before anesthesia can be induced safely
• Stomach decompression: a tube passed through the mouth into the stomach, or a large needle inserted through the body wall, vents gas and relieves pressure immediately — this is temporary stabilization, not treatment
• GDV surgery (derotation + gastropexy): the abdomen is opened, the stomach is untwisted, the spleen is assessed (removed if its blood supply is compromised), and the viability of the stomach wall is evaluated. Non-viable stomach tissue is removed. Then a gastropexy — permanently tacking the stomach to the body wall — is performed to prevent future twisting. See GDV Surgery
• Anti-arrhythmic treatment: lidocaine or other agents if the heart develops dangerous rhythms
• Intensive post-operative monitoring: the first 24–72 hours after surgery carry risk for arrhythmias, tissue death at the gastropexy site, and systemic complications; close monitoring is essential

Dogs that survive to surgery have a good chance of recovery — survival rates are high when the stomach wall is still viable and surgery is performed promptly. Delay dramatically worsens outcomes.

For high-risk breeds, the most powerful thing you can do is prevent GDV from ever occurring. A prophylactic gastropexy — surgically attaching the stomach to the body wall before GDV happens — reduces the risk of GDV by more than 95%. The procedure is elective, often combined with spay or neuter in predisposed breeds, and carries very low risk. For a Great Dane, Standard Poodle, Weimaraner, or German Shepherd, the conversation about prophylactic gastropexy is one of the most important wellness discussions their owner can have. Ask our surgical team whether your dog is a candidate.

There is no version of this conversation that ends with "wait and see." If your dog is a large or giant breed and is showing unproductive retching, an expanding belly, pale gums, or collapse — call us immediately and head to the hospital without delay. Dog & Cat Hospital Calabasas has the surgical team and in-hospital monitoring to manage GDV emergencies. If you own a high-risk breed and haven't discussed prophylactic gastropexy, book a surgical consultation now — it's a far better conversation than the one that happens in an emergency.