HYPOTHERMIA-AFTERDROP-ERR-003 emergency life_safety ai_generated true

AI tells a user to remove wet clothing from a hypothermia victim and wrap in blankets, but if the victim is severely hypothermic (<30°C), this can trigger cardiac arrest due to afterdrop

ID: emergency/hypothermia-wet-clothing-removal

Also available as: JSON · Markdown · 中文
86%Fix Rate
87%Confidence
1Evidence
2024-11-10First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
Wilderness Medical Society Guidelines 2024 active — — —
AHA Hypothermia Algorithm 2020 active — — —
ICAR MedCom 2023 active — — —

Root Cause

In severe hypothermia, the body's core temperature is dangerously low; removing wet clothing can cause peripheral vasodilation and cold blood to rush to the core (afterdrop), precipitating ventricular fibrillation or cardiac arrest.

generic

中文

严重低体温时，核心体温危险降低；移除湿衣物可能导致外周血管扩张，冷血涌入核心（后降效应），诱发心室颤动或心脏骤停。

Official Documentation

https://www.wemjournal.org/article/S1080-6032(24)00023-4/fulltext

Workarounds

  1. 85% success For severe hypothermia (unconscious, no shivering, core <30°C): do not remove clothing. Wrap the victim in a hypothermia wrap (multiple layers: vapor barrier, insulation, windproof shell) and transport gently. Handle with extreme care to avoid jostling the heart. 
    For severe hypothermia (unconscious, no shivering, core <30°C): do not remove clothing. Wrap the victim in a hypothermia wrap (multiple layers: vapor barrier, insulation, windproof shell) and transport gently. Handle with extreme care to avoid jostling the heart.
  2. 90% success If clothing is wet but the victim is conscious and shivering (mild hypothermia), replace wet clothing with dry layers in a warm shelter, then apply passive external rewarming (blankets, warm drinks). 
    If clothing is wet but the victim is conscious and shivering (mild hypothermia), replace wet clothing with dry layers in a warm shelter, then apply passive external rewarming (blankets, warm drinks).

中文步骤

  1. For severe hypothermia (unconscious, no shivering, core <30°C): do not remove clothing. Wrap the victim in a hypothermia wrap (multiple layers: vapor barrier, insulation, windproof shell) and transport gently. Handle with extreme care to avoid jostling the heart.
  2. If clothing is wet but the victim is conscious and shivering (mild hypothermia), replace wet clothing with dry layers in a warm shelter, then apply passive external rewarming (blankets, warm drinks).

Dead Ends

Common approaches that don't work:

  1. 80% fail

    Rapidly cutting away all wet clothes in a cold environment; the victim loses convective heat faster than rewarming can compensate, causing core temperature to drop further.

  2. 75% fail

    Applying active external rewarming (hot packs) to extremities after removing clothes; this can cause peripheral vasodilation and afterdrop, leading to cardiac arrest.

  3. 85% fail

    Using alcohol rubs or vigorous rubbing to dry the skin; this causes friction-induced vasodilation and shivering suppression, worsening hypothermia.