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Birth of a BVDV-free calf from a persistently infected embryo transfer donor

dichloromethane ingestion is longer than that after direct inhalation of carbon monoxide because in the case of dichloromethane exposure, carbon monoxide is continuously generated (Ellenhorn 1997). This was clearly demonstrated by this case. There is no specific antidote for carbon monoxide poisoning, but high concentrations of oxygen should be administered to hasten its elimination and symptomatic treatment given to maintain vital functions. Gastric lavage was not essential in the beneficial outcome in this case, but there was suspicion that the dog had swallowed a rag soaked in paint stripper and the lavage was performed to prevent injury to the gastroscope. In human cases there is controversy over when hyperbaric oxygen should be used, and there is certainly no established indication for its use in animals, even if available. Sodium calciumedetate was administered before lead poisoning from the stripped paint was ruled out as a cause of the convulsions. This case demonstrates the potentially serious nature of dichloromethane poisoning in dogs, and gives an example of successful management. It also highlights the importance of rapid access to the properties of a poison which appears to be unfamiliar to the clinician.