Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos)
The objectives of the present study were to: 1) compare body temperature of anesthetized brown bears obtained by Vital Sense® capsules (VS) inserted gastrically to those obtained by deep rectal VS and handheld digital thermometer (HDT) and 2) to evaluate the decrease in core body temperature produce...
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ftunivcalgary:oai:prism.ucalgary.ca:11023/585 2023-08-27T04:12:27+02:00 Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) Ozeki, Larissa Mourad Caulkett, Nigel Fahlman, Åsa 2013 application/pdf http://hdl.handle.net/11023/585 https://doi.org/10.11575/PRISM/25984 eng eng Graduate Studies Veterinary Medicine University of Calgary Calgary Ozeki, L. M. (2013). Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/25984 http://dx.doi.org/10.11575/PRISM/25984 http://hdl.handle.net/11023/585 University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Veterinary Science hyperthermia VitalSense core temperature brown bears wildlife master thesis 2013 ftunivcalgary https://doi.org/10.11575/PRISM/25984 2023-08-06T06:21:30Z The objectives of the present study were to: 1) compare body temperature of anesthetized brown bears obtained by Vital Sense® capsules (VS) inserted gastrically to those obtained by deep rectal VS and handheld digital thermometer (HDT) and 2) to evaluate the decrease in core body temperature produced by an active cooling protocol and by alpha-2 antagonism. Thirty-one brown bears were captured with a combination of zolazepam-tiletamine and xylazine or medetomidine. One VS capsule was inserted deep into the animals’ rectum and another into the stomach. Rectal temperature was also measured with the HDT and paired data points were analyzed with the Bland-Altman technique and regression analysis. In bears that demonstrated gastric temperatures ≥ 40oC a described active cooling protocol was performed and the temperature change was analyzed for 30 minutes. To determine if antagonism of the alpha-2 agonist decreased core body temperature in bears, change in temperature was analyzed for 30 minutes after the administration of IM atipamezole. A third group of bears were not cooled and temperatures were recorded for 30 minutes before administration of atipamezole. To compare the differences among the three groups an area under the curve was calculated for each individual bear and analyzed one-way analysis of variance with Tukey’s PostHoc test. To evaluate the change over time within each treatment a General Linea Model for repeated measures was performed, with Tukey’s PostHoc test. The significance level of all analyses was 5%. VS capsules accurately measured core temperature and HDT did not accurately estimate core temperature in anesthetized brown bears. The active cooling protocol used significantly decreased body temperature of hyperthermic bears after 10 minutes. Alpha-2 antagonist produced an earlier significant decrease but the final change in temperature (at Time 30) was lower than with active cooling. No significant difference was found between the two treatments. Master Thesis Ursus arctos PRISM - University of Calgary Digital Repository |
institution |
Open Polar |
collection |
PRISM - University of Calgary Digital Repository |
op_collection_id |
ftunivcalgary |
language |
English |
topic |
Veterinary Science hyperthermia VitalSense core temperature brown bears wildlife |
spellingShingle |
Veterinary Science hyperthermia VitalSense core temperature brown bears wildlife Ozeki, Larissa Mourad Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
topic_facet |
Veterinary Science hyperthermia VitalSense core temperature brown bears wildlife |
description |
The objectives of the present study were to: 1) compare body temperature of anesthetized brown bears obtained by Vital Sense® capsules (VS) inserted gastrically to those obtained by deep rectal VS and handheld digital thermometer (HDT) and 2) to evaluate the decrease in core body temperature produced by an active cooling protocol and by alpha-2 antagonism. Thirty-one brown bears were captured with a combination of zolazepam-tiletamine and xylazine or medetomidine. One VS capsule was inserted deep into the animals’ rectum and another into the stomach. Rectal temperature was also measured with the HDT and paired data points were analyzed with the Bland-Altman technique and regression analysis. In bears that demonstrated gastric temperatures ≥ 40oC a described active cooling protocol was performed and the temperature change was analyzed for 30 minutes. To determine if antagonism of the alpha-2 agonist decreased core body temperature in bears, change in temperature was analyzed for 30 minutes after the administration of IM atipamezole. A third group of bears were not cooled and temperatures were recorded for 30 minutes before administration of atipamezole. To compare the differences among the three groups an area under the curve was calculated for each individual bear and analyzed one-way analysis of variance with Tukey’s PostHoc test. To evaluate the change over time within each treatment a General Linea Model for repeated measures was performed, with Tukey’s PostHoc test. The significance level of all analyses was 5%. VS capsules accurately measured core temperature and HDT did not accurately estimate core temperature in anesthetized brown bears. The active cooling protocol used significantly decreased body temperature of hyperthermic bears after 10 minutes. Alpha-2 antagonist produced an earlier significant decrease but the final change in temperature (at Time 30) was lower than with active cooling. No significant difference was found between the two treatments. |
author2 |
Caulkett, Nigel Fahlman, Åsa |
format |
Master Thesis |
author |
Ozeki, Larissa Mourad |
author_facet |
Ozeki, Larissa Mourad |
author_sort |
Ozeki, Larissa Mourad |
title |
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
title_short |
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
title_full |
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
title_fullStr |
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
title_full_unstemmed |
Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) |
title_sort |
evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (ursus arctos) |
publisher |
Graduate Studies |
publishDate |
2013 |
url |
http://hdl.handle.net/11023/585 https://doi.org/10.11575/PRISM/25984 |
genre |
Ursus arctos |
genre_facet |
Ursus arctos |
op_relation |
Ozeki, L. M. (2013). Evaluation of core temperature measurement and treatment of capture-related hyperthermia in anesthetized brown bears (Ursus arctos) (Unpublished master's thesis). University of Calgary, Calgary, AB. doi:10.11575/PRISM/25984 http://dx.doi.org/10.11575/PRISM/25984 http://hdl.handle.net/11023/585 |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/PRISM/25984 |
_version_ |
1775356606103420928 |