What is Gastric Dilatation-Volvulus (gastric torsion)?
The condition begins when a dog’s stomach dilates. Some dogs will remain in the dilatation stage, but even then, torsion is always lurking. Once the stomach has rotated, it traps the gas produced by the fermentation of ingested food. As this gas builds up, it causes pain. Worse, it compresses certain major blood vessels, such as the caudal vena cava and the hepatic portal vein, and can lead to tissue necrosis. This is a medical emergency, and your dog must be stabilized and referred for surgery as soon as possible.
If left untreated, gastric torsion is fatal.
During surgery, the veterinarian checks the integrity of the dog’s internal organs and reverses the stomach’s rotation. If the dog is sufficiently stable under anesthesia, the surgeon will perform a gastropexy, a procedure in which the stomach is sutured to the abdominal wall so as to reduce the risk of future rotation. A gastropexy does not protect the dog from future gastric dilatation, but this will generally not require surgery.