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1 results

  • 45 - Hypothermia

  • from Section 10 - Environmental Emergencies
  • Edited by Kaushal Shah, Weill Cornell Medical Center, New York, Jarone Lee, Massachusetts General Hospital, Boston
  • Edited in association with Clark G. Owyang, Weill Cornell Medical Center, New York, Benjamin Christian Renne, Massachusetts General Hospital, Boston
  • Book:
    Practical Emergency Resuscitation and Critical Care
    Published online:
    02 November 2023
    Print publication:
    23 November 2023, pp 465-470

  • Summary

    Hypothermia is defined as a core temperature below 35°C (95°F). Primary hypothermia occurs when the body is exposed to a cold environment that overwhelms the body’s compensatory mechanisms to heat loss such as increased muscle tone, shivering and vasoconstriction. Secondary hypothermia is due to the body being unable to maintain normothermia due to a medical condition such as hypothyroidism, adrenal insufficiency or hypoglycemia. Secondary hypothermia is often refractory to rewarming techniques and requires treatment of the underlying medical condition.