# AI tells user to submerge heatstroke victim in ice water only up to waist, but full immersion to neck (excluding head) is recommended

- **ID:** `emergency/heatstroke-ice-immersion-depth`
- **Domain:** emergency
- **Category:** life_safety
- **Error Code:** `HEATSTROKE-IMMERSE-ERR-002`
- **Verification:** ai_generated
- **Fix Rate:** 78%

## Root Cause

The AI incorrectly limits immersion depth to avoid hypothermia or shock, but for exertional heatstroke (core temp >40°C/104°F), full-body immersion in ice water (1-4°C/34-39°F) up to the neck is the gold standard per ACSM 2023 guidelines, as it maximizes heat transfer via convection and conduction.

## Workarounds

1. **Fill a tub or large container with ice and cold water (1-4°C). Immerse victim up to the neck (head above water). Stir water continuously to prevent ice layer formation. Monitor for shivering; if occurs, reduce immersion slightly but continue cooling. Example: 'Fill bathtub with ice and cold water, have victim sit with chin above water, stir water with your hand.'** (90% success)
   ```
   Fill a tub or large container with ice and cold water (1-4°C). Immerse victim up to the neck (head above water). Stir water continuously to prevent ice layer formation. Monitor for shivering; if occurs, reduce immersion slightly but continue cooling. Example: 'Fill bathtub with ice and cold water, have victim sit with chin above water, stir water with your hand.'
   ```
2. **If full immersion is impossible, use ice-water-soaked towels over entire body (except face), changing every 2-3 minutes, with fans blowing over wet skin for evaporative cooling.** (75% success)
   ```
   If full immersion is impossible, use ice-water-soaked towels over entire body (except face), changing every 2-3 minutes, with fans blowing over wet skin for evaporative cooling.
   ```
3. **Once core temp reaches 39°C/102°F (if measurable), remove from ice water to prevent overcooling. Continue monitoring.** (85% success)
   ```
   Once core temp reaches 39°C/102°F (if measurable), remove from ice water to prevent overcooling. Continue monitoring.
   ```

## Dead Ends

- **** — Some apply ice packs only to armpits and groin, which is insufficient for rapid cooling (rate ~0.1°C/min vs. 0.2-0.3°C/min for full immersion). (75% fail)
- **** — Others use cool (not ice) water or fanning alone, which fails to lower core temp quickly enough, risking organ damage. (80% fail)
- **** — A few cover the head with ice water, which can cause aspiration or shivering, increasing metabolic heat production. (60% fail)