disaster life_threatening ai_generated true

AI advises applying a wet cloth to the forehead and chest during heatstroke to lower body temperature (vasoconstriction and shivering risk)

ID: disaster/heatstroke-wet-cloth-forehead-myth

Also available as: JSON · Markdown · 中文
20%Fix Rate
86%Confidence
1Evidence
2024-07-05First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
CDC Heat Stroke Treatment Guidelines 2023 active — — —
WHO Heat-Health Action Plan v2.0 active — — —

Root Cause

Applying cold water to the forehead and chest triggers cutaneous vasoconstriction, reducing heat dissipation, and may cause shivering which generates metabolic heat, worsening hyperthermia; the correct method is whole-body immersion in cool (not cold) water.

generic

中文

将冷水敷在额头和胸部会触发皮肤血管收缩，减少散热，并可能引起寒战，产生代谢热，加重高热；正确方法是全身浸泡在凉水（非冷水）中。

Official Documentation

https://www.cdc.gov/disasters/extremeheat/heatstroke.html

Workarounds

  1. 90% success Immerse the heatstroke victim in a tub of cool water (15-20°C or 59-68°F) up to the neck, ensuring the whole body is submerged. If no tub, pour cool water over the entire body and fan vigorously to promote evaporative cooling. Monitor core temperature with a rectal thermometer and stop cooling at 38.5°C (101.3°F). 
    Immerse the heatstroke victim in a tub of cool water (15-20°C or 59-68°F) up to the neck, ensuring the whole body is submerged. If no tub, pour cool water over the entire body and fan vigorously to promote evaporative cooling. Monitor core temperature with a rectal thermometer and stop cooling at 38.5°C (101.3°F).
  2. 75% success If immersion is not possible, use cold wet towels over the entire body (not just forehead/chest) and replace them frequently. Fan the victim with a large fan or improvised board. Avoid alcohol rubs which cause vasoconstriction. 
    If immersion is not possible, use cold wet towels over the entire body (not just forehead/chest) and replace them frequently. Fan the victim with a large fan or improvised board. Avoid alcohol rubs which cause vasoconstriction.

中文步骤

  1. Immerse the heatstroke victim in a tub of cool water (15-20°C or 59-68°F) up to the neck, ensuring the whole body is submerged. If no tub, pour cool water over the entire body and fan vigorously to promote evaporative cooling. Monitor core temperature with a rectal thermometer and stop cooling at 38.5°C (101.3°F).
  2. If immersion is not possible, use cold wet towels over the entire body (not just forehead/chest) and replace them frequently. Fan the victim with a large fan or improvised board. Avoid alcohol rubs which cause vasoconstriction.

Dead Ends

Common approaches that don't work:

  1. Applying ice packs to the forehead and armpits 85% fail

    Intense cold causes vasoconstriction and shivering; ice packs can cause frostbite on damaged skin; core temperature drops too slowly

  2. Spraying the face with a mist of cold water 90% fail

    Evaporative cooling is minimal on forehead; does not address core hyperthermia; may cause aspiration if patient is unconscious