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81% of hypothermia in the first one hour, following the induction of Anesthesia, is due to temperature redistribution 1

  • Chart adapted from: Sessler, DI., Perioperative Heat Balance. Anesthesiology 2000;92(2):578-96.


    Pre-warming prior to the induction of anaesthesia helps to maintain normothermia and mitigate the effects of heat redistribution 2

    Induction of Anaesthesia
    Vasolidation allows warmer blood from the core to cool as it flows through the periphery which lowers the body temperature.

    Prewarmed Patient
    Prewarming before surgery increases the peripheral temperature, so the blood’s rate of cooling is reduced.

    1. Matsukawa T, et al. Anesth. 1995. 82(3): p.662-73.

    2. Brandes IF, Jipp M, Popov AF, Seipelt R, Quintel M, Bräuer A. Intensified thermal management for patients undergoing transcatheter aortic valve implantation (TAVI). J Cardiothor Surg. 2011 Sep 25;6(1):1.

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