Bloat is a condition in which the stomach becomes painfully distended by gas or food, and is known as gastric dilation. The bloated stomach has a tendency to twist upon itself.

Bloat is an immediately life-threatening condition that can cause a dog to die a painful death within hours of its occurrence.

For more info see:

http://www.aecvets.com.au/docs/Updated%20Info%20Sheets/Bloat-and-Gastric-Dilation-Volvulus-2016.pdf

For emergency procedures the section on Accident & Illness