Canadian Veterinary Journal 31 12 847 850

Isoflurane is the most recently available inhalational anaesthetic agent on the market. Although there have been few clinical trials comparing its use to halothane and methoxyflurane, the pharmacology of the agent suggests certain situations in which it may be the preferred agent. These include avian anaesthesia, geriatric patients, patients with cardiovascular disease or hepatic disease, critically ill and unstable patients, cases such as brachiocephalics where upper airway obstruction is a concern during recovery, patients where increases in intracranial pressure should be avoided, and caesarean section. In addition, the rapid recoveries seen with isoflurane may be an advantage for outpatient surgeries.