Gastric dilatation volvulus (also known as twisted stomach, gastric torsion and GDV) is a medical condition in which the stomach becomes overstretched and rotated by excessive gas content. The word bloat is often used as a general term to cover gas distension without twisting and is often a normal change after eating or with aerophagia. It is sometimes used incorrectly to indicate gastric torsion. Gastric dilatation volvulus always involves the twisting of the stomach and is a life-threatening condition that requires prompt treatment. The condition occurs commonly in domesticated animals, especially certain dog breeds. Deep-chested breeds are especially at risk. Mortality rates in dogs range from 10 to 60 percent, even with treatment. With surgery, the mortality rate is 15 to 33 percent.