TL;DR: Bloat (GDV) is a life-threatening emergency where a dog's stomach twists, requiring immediate surgery. If your dog has a distended abdomen and is unsuccessfully retching, transport them to an emergency vet immediately.
What is Bloat (GDV) in dogs and how does it happen?
When a dog's stomach becomes visibly distended after a meal, it may be experiencing Gastric Dilatation-Volvulus (GDV), commonly known as bloat. This occurs when the stomach fills with gas, food, or liquid and subsequently twists. This twisting traps the contents inside and cuts off blood flow to the stomach and other vital organs, leading to rapid tissue death and cardiovascular collapse.
Is a bloated stomach a life-threatening emergency for my dog?
- The urgency level for a bloated stomach is High, representing one of the most time-sensitive emergencies in veterinary medicine.
- If your dog exhibits a firm, swollen abdomen, appears restless, or is unsuccessfully attempting to vomit (retching), you must transport them to an emergency veterinary hospital immediately.
- Without surgical intervention, bloat is almost always fatal within hours.
How can a photo or video of my dog help the triage process?
- A side-profile image allows a vet to see the degree of distension and the shape of the tuck to differentiate between a full stomach and the life-threatening appearance of GDV.
- If you are using a telehealth service while heading to the clinic, a photo allows the medical team to prepare the surgical suite before you even walk through the door.
Clinical Context (Merck Veterinary Manual)
Gastric dilation and volvulus (GDV) is an acute, life-threatening condition primarily affecting large- and giant-breed dogs, requiring immediate medical and surgical intervention. Breeds at risk include Great Danes, German Shepherds, Irish Setters, Gordon Setters, Weimaraners, Saint Bernards, Standard Poodles, and Basset Hounds, with increased risk in older dogs. Other predisposing factors include lean body condition, deep/narrow thoracic conformation, a family history of GDV, stress, aggressive or fearful behavior, once daily feeding, dry food, rapid food consumption, previous splenic disease, and increased gastric ligament laxity. Clinical signs include pale mucous membranes, tachycardia, prolonged capillary refill time, weak peripheral pulses, and dyspnea; arrhythmias may also be present. Diagnosis is based on history, signalment, and clinical signs, confirmed via right lateral and dorsoventral radiographs revealing a distended, gas-filled stomach with the pylorus located dorsal and cranial to the fundus. Ventrodorsal positioning should be avoided due to the risk of aspiration.
Chapter: Emergency, Surgery, Gastroenterology
Source: The Merck Veterinary Manual, 11th Edition (Page 384)