Gastric dilatation volvulus (GDV), also known as gastric dilation, twisted stomach, or gastric torsion, is a medical condition that affects dogs and rarely cats and guinea pigs,[1] in which the stomach becomes overstretched and rotated by excessive gas content. The condition also involves compression of the diaphragm and caudal vena cavae. The word bloat is often used as a general term to mean gas distension without stomach torsion (a normal change after eating), or to refer to GDV.
GDV is a life-threatening condition in dogs that requires prompt treatment. It is common in certain breeds; deep-chested breeds are especially at risk. Mortality rates in dogs range from 10 to 60%, even with treatment.[2] With surgery, the mortality rate is 15 to 33 percent.[3]
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