• K T Kruse-Elliott, C R Swanson, and D P Aucoin.
• Am. J. Vet. Res. 1987 Jul 1; 48 (7): 1098-100.

AbstractAdrenocortical function in canine surgical patients given etomidate at 1 of 2 dosages (1.5 mg/kg of body weight or 3 mg/kg, IV) was evaluated and compared with that of dogs given thiopental (12 mg/kg, IV). The adrenocortical function was evaluated by use of adrenocorticotropic hormone (ACTH) stimulation tests and determination of plasma cortisol concentrations at 0 minute (base line) and 60 minutes after ACTH administration. At 24 hours before administration of either drug (ie, induction of anesthesia), each dog had an increase in plasma cortisol concentration when given ACTH. The ACTH stimulation tests were repeated 2 hours after induction of anesthesia. Dogs given thiopental had base-line plasma cortisol concentrations greater than preinduction base-line values, but did not increase plasma cortisol in response to ACTH stimulation. Postinduction ACTH stimulation tests in dogs given etomidate at either dose indicated base-line and 60-minute plasma cortisol concentrations that were not different from preinduction base-line values. Therefore, adrenocortical function was suppressed 2 and 3 hours after the administration of etomidate in canine surgical patients.

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