# AI 建议在中暑时将湿布敷在额头和胸部以降低体温（血管收缩和寒战风险）

- **ID:** `disaster/heatstroke-wet-cloth-forehead-myth`
- **领域:** disaster
- **类别:** life_threatening
- **验证级别:** ai_generated
- **修复率:** 20%

## 根因

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。

## 版本兼容性

| 版本 | 状态 | 引入 | 弃用 |
|------|------|------|------|
| CDC Heat Stroke Treatment Guidelines 2023 | active | — | — |
| WHO Heat-Health Action Plan v2.0 | active | — | — |

## 解决方案

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.
   ```

## 无效尝试

- **Applying ice packs to the forehead and armpits** — Intense cold causes vasoconstriction and shivering; ice packs can cause frostbite on damaged skin; core temperature drops too slowly (85% 失败率)
- **Spraying the face with a mist of cold water** — Evaporative cooling is minimal on forehead; does not address core hyperthermia; may cause aspiration if patient is unconscious (90% 失败率)