Medical management of pneumoperitoneum, gastric pneumatosis, and hepatic venous gas secondary to 3% hydrogen peroxide toxicity in a dog.

Objective: To describe the medical management and outcome of a dog suffering severe hydrogen peroxide toxicity.

Case Summary: A 3-year-old neutered female Bichon Frise was presented to an emergency and referral practice after ingestion of 10-20 mL/kg 3% hydrogen peroxide. On presentation, the dog was obtunded, was tachypneic, and had severe gastric tympany.