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Case Report: Subclinical Verminous Pneumonia and High Ambient Temperatures Had Severe Impact on the Anesthesia of Semi-domesticated Eurasian Tundra Reindeer (Rangifer tarandus tarandus) With Medetomidine-Ketamine

Tryland, Morten and Josefsen, Terje D. and Sánchez Romano, Javier and Marcin, Nina and Mørk, Torill and Arnemo, Jon (2021). Case Report: Subclinical Verminous Pneumonia and High Ambient Temperatures Had Severe Impact on the Anesthesia of Semi-domesticated Eurasian Tundra Reindeer (Rangifer tarandus tarandus) With Medetomidine-Ketamine. Frontiers in Veterinary Science. 8 , 606323
[Research article]

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Abstract

Semidomesticated Eurasian tundra reindeer (Rangifer tarandus tarandus, n = 21) were scheduled twice for chemical immobilization with medetomidine-ketamine as part of a scientific experiment in June 2014. During the first round of immobilizations, seven animals developed severe respiratory depression (RD). Three individuals died, and 4 recovered. The ambient temperature during the 2 days of immobilization (June 3 and 4) was high (mean 13.9-17.6 degrees C) compared to the normal mean temperature for these 2 days (7-8 degrees C) based on statistical records. During the second round of immobilizations, using the same anesthetic protocol for the remaining animals as in the first round but conducted under cooler conditions (mean 6.6 degrees C for the period June 9-18), no signs of RD were observed. Clinical and pathological investigations indicated that the animals suffered from circulatory changes possibly caused by high ambient temperatures and granulomatous interstitial pneumonia due to Elaphostrongylus rangiferi larvae. These conditions, together with the cardiovascular effects of medetomidine, were likely causes of RD and the fatal outcome. We conclude that chemical immobilization of reindeer with medetomidine-ketamine should be avoided in May-June due to the potential risk when animals partly in winter coats encounter rising ambient temperatures and usually have parasites developing in their airways.

Authors/Creators:Tryland, Morten and Josefsen, Terje D. and Sánchez Romano, Javier and Marcin, Nina and Mørk, Torill and Arnemo, Jon
Title:Case Report: Subclinical Verminous Pneumonia and High Ambient Temperatures Had Severe Impact on the Anesthesia of Semi-domesticated Eurasian Tundra Reindeer (Rangifer tarandus tarandus) With Medetomidine-Ketamine
Series Name/Journal:Frontiers in Veterinary Science
Year of publishing :2021
Volume:8
Article number:606323
Number of Pages:7
Publisher:FRONTIERS MEDIA SA
ISSN:2297-1769
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:Alfa-2 agonist, atipamezole, chemical immobilization, circulation, ketamine, medetomidine, parasite, rangifer (reindeer, caribou)
URN:NBN:urn:nbn:se:slu:epsilon-p-111218
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-111218
Additional ID:
Type of IDID
DOI10.3389/fvets.2021.606323
Web of Science (WoS)000626741600001
ID Code:22844
Faculty:S - Faculty of Forest Sciences
Department:(S) > Dept. of Wildlife, Fish and Environmental Studies
Deposited By: SLUpub Connector
Deposited On:26 Mar 2021 14:23
Metadata Last Modified:26 Mar 2021 14:31

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