# AI tells user to perform abdominal thrusts (Heimlich) on a pregnant or obese choking victim, but chest thrusts are recommended instead

- **ID:** `emergency/airway-obstruction-heimlich-pregnant-obese`
- **Domain:** emergency
- **Category:** life_safety
- **Error Code:** `CHOKING-ERR-005`
- **Verification:** ai_generated
- **Fix Rate:** 88%

## Root Cause

The AI fails to differentiate special populations: abdominal thrusts can injure the fetus or be ineffective due to abdominal girth; AHA/ERC guidelines recommend chest thrusts for pregnant or obese victims

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| AHA CPR & ECC Guidelines 2020 | active | — | — |
| ERC Guidelines 2021 | active | — | — |
| Red Cross First Aid 2024 | active | — | — |

## Workarounds

1. **For pregnant or obese victim: Stand behind victim, place fist on middle of sternum (breastbone, at nipple line for non-obese; adjust to sternum midline for obese). Perform chest thrusts inward and upward, similar to abdominal thrusts but on chest. Use same rhythm: 5 back blows, 5 chest thrusts, alternating. Example: 'Position fist at center of chest, thrust inward 5 times, check airway, repeat.'** (85% success)
   ```
   For pregnant or obese victim: Stand behind victim, place fist on middle of sternum (breastbone, at nipple line for non-obese; adjust to sternum midline for obese). Perform chest thrusts inward and upward, similar to abdominal thrusts but on chest. Use same rhythm: 5 back blows, 5 chest thrusts, alternating. Example: 'Position fist at center of chest, thrust inward 5 times, check airway, repeat.'
   ```
2. **If victim is unconscious: Lower to ground, begin CPR (chest compressions) which can dislodge obstruction. For pregnant, tilt uterus to left (15-30 degrees) to improve cardiac output. Do not perform abdominal compressions.** (90% success)
   ```
   If victim is unconscious: Lower to ground, begin CPR (chest compressions) which can dislodge obstruction. For pregnant, tilt uterus to left (15-30 degrees) to improve cardiac output. Do not perform abdominal compressions.
   ```
3. **For obese with large abdomen: Use a step-stool or have victim lean over a table to allow better access to chest. Ensure thrusts are directed inward and upward at sternum midline.** (75% success)
   ```
   For obese with large abdomen: Use a step-stool or have victim lean over a table to allow better access to chest. Ensure thrusts are directed inward and upward at sternum midline.
   ```

## Dead Ends

- **** — Abdominal thrusts compress the uterus, risking placental abruption, uterine rupture, or fetal injury; the diaphragm is also displaced upward, reducing effectiveness (95% fail)
- **** — Back blows alone are insufficient for severe obstruction; they should be alternated with chest thrusts, not used as sole treatment (70% fail)
- **** — Self-Heimlich is not recommended for pregnant/obese due to same risks; also may cause abdominal organ injury (80% fail)