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Demographic data, body condition score, American Society of Anesthesiologists (ASA) physical status classification, types of procedure performed and medications administered, duration of anesthesia, and use of heat support were also recorded. Multiple regression analysis was performed to determine factors that were significantly associated with a decrease or an increase (or no change) in RT. Odds ratios were calculated for factors significantly associated with a decrease in RT.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"s004\">\n<jats:title>RESULTS<\/jats:title>\n<jats:p>Among the 507 dogs undergoing anesthesia, RT decreased in 89% (median decrease, \u22121.2\u00b0C [-2.2\u00b0F]; range, \u22120.1\u00b0C to \u22125.7\u00b0C [\u20130.2\u00b0F to \u221210.3\u00b0F]), increased in 9% (median increase, 0.65\u00b0C [1.2\u00b0F]; range, 0.1\u00b0C to 2.1\u00b0C [3.8\u00b0F]), and did not change in 2%. Factors that significantly predicted and increased the odds of a decrease in RT included lower weight, ASA classification &gt; 2, surgery for orthopedic or neurologic disease, MRI procedures, use of an \u03b1<jats:sub>2<\/jats:sub>-adrenergic or \u03bc-opioid receptor agonist, longer duration of anesthesia, and higher heat loss rate. Lack of \u03bc-opioid receptor agonist use, shorter duration of anesthesia, and lower heat loss rate were significantly associated with an increase in RT.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"s005\">\n<jats:title>CONCLUSIONS AND CLINICAL RELEVANCE<\/jats:title>\n<jats:p>Multiple factors that were associated with a decrease in RT in dogs undergoing anesthesia were identified. Knowledge of these factors may help identify dogs at greater risk of developing inadvertent perianesthetic hypothermia.<\/jats:p>\n<\/jats:sec>","DOI":"10.2460\/javma.258.1.64","type":"journal-article","created":{"date-parts":[[2020,12,14]],"date-time":"2020-12-14T16:22:19Z","timestamp":1607962939000},"page":"64-71","source":"Crossref","is-referenced-by-count":11,"title":["Multicenter study to investigate factors associated with change in rectal temperature during anesthesia in dogs"],"prefix":"10.2460","volume":"258","author":[{"given":"Stuart C.","family":"Clark-Price","sequence":"first","affiliation":[{"name":"Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL 36849."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Berit L.","family":"Fischer","sequence":"additional","affiliation":[{"name":"Crown Veterinary Specialists & Associates, Lebanon, NJ 08833."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kevin L.","family":"Kirwin","sequence":"additional","affiliation":[{"name":"Day Heights Veterinary Clinic, Milford, OH 45150."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stephanie C. 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