What is the first-line emergency management for suspected free-gas bloat?

• A. Administer intravenous fluids
• B. Pass a compression-freeing orogastric tube to relieve gas; if unsuccessful, left-flank trocharization
• C. Induce vomiting
• D. Administer antihistamines

Answer: (B)

Relieving gas quickly is the priority in suspected free-gas bloat. When gas builds up in the rumen, it presses on the diaphragm and reduces breathing and blood return to the heart. The fastest, most direct way to fix this is to pass a compression-freeing orogastric tube to vent the gas and decompress the rumen. If the tube cannot be passed or cannot relieve the buildup, left-flank trocharization provides a rapid, direct means to release the gas from the rumen through a stab incision.

Administering intravenous fluids helps support perfusion but does not address the gas distension itself. Inducing vomiting is not feasible in ruminants, as they do not vomit. Antihistamines do not treat the underlying issue.