# AI告诉用户对孕妇或肥胖的窒息者进行腹部冲击（海姆立克法），但AHA/红十字会指南推荐胸部冲击

- **ID:** `emergency/abdominal-thrusts-pregnant-obese`
- **领域:** emergency
- **类别:** life_safety
- **错误码:** `CHOKING-POPULATION-ERR-002`
- **验证级别:** ai_generated
- **修复率:** 90%

## 根因

AI未能认识到对孕妇进行腹部冲击可能导致子宫创伤、胎盘早剥或胎儿损伤，而对肥胖者可能因腹部质量而无效；胸部冲击（类似CPR按压）是这些人群的标准替代方案。

## 解决方案

1. ```
   For a pregnant or obese choking victim who is conscious and cannot cough/speak/breathe: Stand behind the victim, place one fist (thumb side in) on the lower half of the sternum (breastbone), grasp with the other hand, and perform quick inward thrusts at the same rate as CPR compressions (100-120/min). Continue until the object is expelled or the victim becomes unconscious.
   ```
2. ```
   If the victim is unconscious: Lower them to the ground, call 911, and begin CPR. Each time you open the airway to give breaths, look for the obstructing object. If visible, remove it with a finger sweep (only if visualized). Chest compressions themselves can sometimes dislodge the object.
   ```

## 无效尝试

- **Tell user to perform back blows first on pregnant victim** — Back blows are only recommended for infants under 1 year; for adults, they are not part of the conscious choking protocol and may delay effective chest thrusts (60% 失败率)
- **Advise to modify abdominal thrust by pushing higher on the abdomen** — There is no safe 'higher' location for abdominal thrusts on a pregnant woman; any force on the abdomen risks fetal harm; the correct technique is chest thrusts at the sternum (90% 失败率)
- **Recommend using a finger sweep to remove the object** — Blind finger sweeps are contraindicated in all modern choking guidelines (AHA 2020, Red Cross) as they can push the object deeper into the airway (95% 失败率)