HIGH DOSE NARCOTIC ANAESTHESIA USING SUFENTANIL IN SWINE AND DOGS
Journal of Veterinary Anaesthesia(1991)
Abstract
Protocols for utilizing intravenous infusions of sufentanil were developed for experimental cardiac surgery in swine and dogs. After initial experiences with fentanyl, sufentanil was selected for these procedures due to its increased potency and shorter half life thus requiring a smaller volume for infusion and more control. In dogs with experimental mitral valve regurgitation, an initial bolus of sufentanil 3 γg/kg IV was followed by a continuous IV infusion at a rate of 9–13 γg/kg/hr. Swine used in experiments involving cardiac conduction system ablation received ketamine 33 mg/kg IM and acepromazine 1.1 mg/kg IM as a preanesthetic combination. Following the preanesthetic, an initial infusion of sufentanil 15 γg/kg/hr was started and a loading dose of sufentanil 7 γg/kg IV was administered as a bolus for induction. They were then maintained by a continuous IV infusion at a rate of 15–30 γg/kg/hr. Dogs but not pigs required periodic supplementation of anaesthesia with isoflurane and/or nitrous oxide during portions of the experimental protocol. No anaesthetic related deaths have occurred in either species using these anaesthetic protocols for cardiac procedures.
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Key words
high dose narcotic anaesthesia,sufentanil,swine,dogs
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