• MittnachtAlexander J CAJCFrom the Department of Anesthesiology, New York Medical College, Valhalla (AJCM), Department of Population Health Science and Policy (H-ML) and Department of Anesthesiology, The Icahn School of Medicine at Mount Sinai, New York, N, Hung-Mo Lin, Xiaoyu Liu, and David Wax.
• From the Department of Anesthesiology, New York Medical College, Valhalla (AJCM), Department of Population Health Science and Policy (H-ML) and Department of Anesthesiology, The Icahn School of Medicine at Mount Sinai, New York, New York, USA (DW).
• Eur J Anaesthesiol. 2021 May 1; 38 (5): 487493487-493.

BackgroundIntra-operative hypothermia has been extensively investigated. However, the incidence of intra-operative hyperthermia has not been investigated in detail.ObjectiveThe main objective of this study was to assess the incidence and risk factors of new-onset intra-operative hyperthermia in a large surgical patient population.DesignRetrospective database review.SettingTertiary-care teaching hospital.PatientsPatients undergoing surgery with general anaesthesia between 1 January 2002 and 31 December 2017 were included.Main Outcome MeasuresThe primary outcome measurement was new-onset intra-operative hyperthermia (>37.5 °C). A logistic regression model was fitted to identify risk factors for intra-operative hyperthermia.ResultsA total of 103 648 patients were included in the final analyses. The incidence of new-onset hyperthermia in the overall patient cohort was 6.45%, reaching 20 to 30% after prolonged (>8 h) surgery, and was up to 26.5% in paediatric patients. The use of forced air active patient warming, larger amounts of fluid administration, longer surgery, younger age and smaller body size were all independently associated with intra-operative hyperthermia. The adoption of the Surgical Care Improvement Project (SCIP) temperature measures was associated with an increased incidence of intra-operative hyperthermia.ConclusionMild intra-operative hyperthermia is not uncommon particularly in longer procedures and small children.Copyright © 2020 European Society of Anaesthesiology and Intensive Care. Unauthorized reproduction of this article is prohibited.

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