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Title
Anesthetic and cardiorespiratory effects of tiletamine-zolazepam-medetomidine in cheetahs
Author(s)
Deem, SL; Ko, JCH; Citino, SB
Published
1998
Publisher
Journal of the American Veterinary Medical Association
Abstract
Objective-To evaluate anesthetic and cardiorespiratory effects of an intramuscular injection of a tiletamine-zolazepam-medetomidine combination in cheetahs. Design-Prospective study. Animals-17 adult captive cheetahs. Procedure-The anesthetic combination was administered intramuscularly via a dart. Induction quality, duration of lateral recumbency, duration of recovery, and quality of anesthetic reversal with atipamezole were assessed. Cardiorespiratory variables (arterial blood gas partial pressures, arterial blood pressure, heart and respiratory rates, end-tidal CO2, oxygen saturation, and rectal temperature) were measured during anesthesia. Results-Sedation and lateral recumbency developed within 1.9 +/- 1.0 (mean +/- SD) and 4.3 +/- 2.0 minutes of drug administration, respectively. Clinically acceptable cardiorespiratory and blood gas values were recorded for at least 87 minutes after drug administration in all but 1 cheetah. Hypoxemia and arrhythmias developed in 1 cheetah breathing room air but resolved after treatment with oxygen. Hypertension developed in all cheetahs. Significant differences in heart and respiratory rates, mean arterial blood pressure, arterial pH, partial pressure of oxygen, and hemoglobin saturation were found between cheetahs that did and did not receive oxygen supplementation, After administration of atipamezole, sternal recumbency and mobility returned within 6.9 +/- 5.8 and 47.5 +/- 102.2 minutes, respectively. Postreversal sedation, which lasted approximately 4 hours, developed in 4 cheetahs. Clinical Implications-Tiletamine-zolazepam-medetomidine delivered via a dart provided an alternative method for induction and maintenance of anesthesia in cheetahs, Atipamezole at the dose used was effective for reversal of this combination in the initial phase of anesthesia.
Keywords
ATIPAMEZOLE; DOGS; IMMOBILIZATION; PHARMACOLOGY; LEOPARDS; TELAZOL; CATS; WILD
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PUB11651