What is the recommended field management for a cow with suspected severe ruminal acidosis?

• A. Oral antacids only; no IV fluids
• B. Stabilize with IV fluids or oral electrolytes, correct dehydration, administer rumen antacid via stomach tube, assess need for decompression or rumenotomy
• C. Wait and observe for 48 hours
• D. Immediate surgery without stabilization

Answer: (B)

In severe ruminal acidosis, the first priority is rapid stabilization and reduction of the rumen’s acid burden. Start by stabilizing the animal with fluids to restore circulation and correct dehydration and electrolyte disturbances. IV fluids are ideal when available; if IV access isn’t feasible, provide oral electrolyte solutions to help rehydrate and rebalance electrolytes. After fluids, give a rumen buffer through a stomach tube to raise rumen pH and neutralize the excess acid, which supports microbial recovery and reduces ongoing acid production. Once stabilization and buffering are underway, assess the rumen for gas distension; if there is significant tympany, decompress or lavage the rumen to relieve pressure and remove fermentative contents. Rumenotomy is reserved for cases where decompression is ineffective or there is a large obstruction or other complicating issue that won’t resolve with medical therapy. Delaying treatment or waiting without stabilization can worsen outcomes, so addressing hydration, electrolytes, and rumen buffering first, with decompression or surgery as needed, is the best field approach.