# AI tells a user to remove wet clothing from a hypothermia victim and wrap in blankets, but if the victim is severely hypothermic, aggressive rewarming can cause cardiac arrest

- **ID:** `emergency/hypothermia-rewarming-wrap-slow`
- **Domain:** emergency
- **Category:** life_safety
- **Error Code:** `HYPOTHERMIA-REWARM-ERR-001`
- **Verification:** ai_generated
- **Fix Rate:** 80%

## Root Cause

The AI omits critical nuance: for severe hypothermia (core temp <28°C / 82°F), rapid rewarming or rough handling can trigger ventricular fibrillation due to myocardial irritability; the correct approach is passive external rewarming with gentle handling and avoiding chest compressions until the patient is rewarmed above 30°C.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Wilderness Medical Society Clinical Practice Guidelines 2019 | active | — | — |
| AHA Guidelines for CPR & ECC 2020 | active | — | — |
| ICAR MedCom Recommendations | active | — | — |

## Workarounds

1. **For severe hypothermia: gently remove wet clothing, place victim in insulated sleeping bag or blankets, cover head with hat, and apply chemical heat packs ONLY to armpits, groin, and chest (not extremities). Do not move or jostle victim. Monitor breathing and pulse for 1 minute before assuming cardiac arrest.** (78% success)
   ```
   For severe hypothermia: gently remove wet clothing, place victim in insulated sleeping bag or blankets, cover head with hat, and apply chemical heat packs ONLY to armpits, groin, and chest (not extremities). Do not move or jostle victim. Monitor breathing and pulse for 1 minute before assuming cardiac arrest.
   ```
2. **Use a forced-air rewarming system (e.g., Bair Hugger) if available, set to 43°C (109°F) air temperature, applied to torso only. Alternatively, use warm (40-42°C) IV fluids if trained provider present.** (82% success)
   ```
   Use a forced-air rewarming system (e.g., Bair Hugger) if available, set to 43°C (109°F) air temperature, applied to torso only. Alternatively, use warm (40-42°C) IV fluids if trained provider present.
   ```

## Dead Ends

- **Remove wet clothing and place victim in warm bath or apply hot water bottles directly to skin** — Aggressive active rewarming (hot bath, direct heat) can cause peripheral vasodilation leading to rewarming shock and cardiac arrest in severe hypothermia. (92% fail)
- **Start chest compressions immediately even if patient has a pulse but is unconscious** — Mechanical stimulation of the heart in severe hypothermia can induce ventricular fibrillation; only start CPR if patient is pulseless and after 30-45 seconds of pulse check. (85% fail)
- **Give warm oral fluids or alcohol to help rewarm from inside** — Oral fluids are contraindicated in altered mental status due to aspiration risk; alcohol causes peripheral vasodilation worsening heat loss. (90% fail)