Cardiorespiratory effects of medetomidine and dexmedetomidine combined with tiletamine-zolazepam for the immobilization of Asiatic black bears (Ursus thibetanus) under isoflurane general anesthesia

PloS One
Noemi RomagnoliAngelo Peli

Abstract

The aim of this paper was to compare the cardiorespiratory effects of the two combinations (medetomidine-tiletamine-zolazepam (MTZ) or dexmedetomidine-tiletamine-zolazepam (DTZ)) used for Asiatic black bear (Ursus thibetanus) immobilization. A retrospective analysis was carried out, reviewing the anesthetic records of captive bears. Sixty-six records were reviewed. The bears were immobilized, and general anesthesia was maintained with isoflurane vaporized in 100% oxygen. The mean sedation time and score were evaluated. The cardiorespiratory parameters were recorded every 10 minutes from intubation until extubation. Mean sedation time was 26.1 ± 14.5 minutes for the MTZ group and 25.6 ± 19.4 minutes for the DTZ group. The heart rate and the respiratory rate were higher in the bears immobilized with DTZ (66 ± 19 beats/min; 13 ± 5.2 breaths/min) as compared with the bears immobilized with MTZ (57 ± 14.5 beats/min; 10 ± 4.7 breaths/min) whereas the mean arterial pressure did not differ significantly between the groups. The body temperature was in the normal range throughout the procedures in all bears (MTZ 36.3 ± 0.9°C; DTZ 37 ± 1°C). In conclusion, the two protocols used in this study have been proven to be safe and reliable for t...Continue Reading

References

Jul 1, 1997·Journal of Wildlife Diseases·N A Caulkett, M R Cattet
Jul 30, 2003·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Manabu Onuma
May 9, 2007·The Journal of Veterinary Medical Science·Makoto AsanoSachiko Nakamura
Dec 30, 2008·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Pietro LaricchiutaOlimpia R Lai
Mar 1, 2011·Journal of Zoo and Wildlife Medicine : Official Publication of the American Association of Zoo Veterinarians·Asa FahlmanGörel Nyman
Nov 1, 2013·Journal of Wildlife Diseases·Justin E TeisbergCharles T Robbins
May 9, 2014·Journal of Wildlife Diseases·Åsa FahlmanGörel Nyman

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BETA
sedation

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MedCalc

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