Enflurane, halothane, and isoflurane potency in horses.
The minimal alveolar concentration of anesthetic required to prevent gross purposeful movement in response to electrical stimulation of oral mucous membranes was determined in horses for 3 agents. Equipotent concentrations of enflurane were 2.12 volumes %; of halothane, 0.88 volumes %; and of isoflurane, 1.31 volumes +. The alveolar concentration required to produce at least 60 seconds of apnea was also determined for these agents. From these data and the minimal alveolar concentration information, anesthetic indices were determined for each agent. The indices for enflurane, halothane, and isoflurane were 2.26, 2.60, and 2.33, respectively.
D000769:Anesthesia, Inhalation / Q000662:veterinary*; D000818:Animals; D004737:Enflurane / Q000008:administration & dosage; D005260:Female; D006221:Halothane / Q000008:administration & dosage; D006736:Horses; D007530:Isoflurane / Q000008:administration & dosage; D008297:Male; D008738:Methyl Ethers
D008738:Methyl Ethers; D004737:Enflurane; D007530:Isoflurane; D006221:Halothane