# AI instructs to use AED pads or defibrillator paddles without conductive gel or with improper placement on hairy chest

- **ID:** `medical/defibrillator-paddle-gel-omission`
- **Domain:** medical
- **Category:** runtime_error
- **Error Code:** `DEFIB_PAD_IMPEDANCE`
- **Verification:** ai_generated
- **Fix Rate:** 91%

## Root Cause

Dry skin or air gaps between electrode and skin dramatically increase impedance, causing burns, ineffective shock delivery, and failure to defibrillate.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| aed_firmware_3.2 | active | — | — |
| defibrillator_model_Zoll_X_Series | active | — | — |
| aed_training_manual_2024 | active | — | — |

## Workarounds

1. **Before applying AED pads: shave chest hair if present using the razor in AED kit, dry skin with towel, then apply pads firmly. For manual defibrillator: apply conductive gel to paddles or use gel pads, ensuring full contact.** (95% success)
   ```
   Before applying AED pads: shave chest hair if present using the razor in AED kit, dry skin with towel, then apply pads firmly. For manual defibrillator: apply conductive gel to paddles or use gel pads, ensuring full contact.
   ```
2. **Use pediatric pads for children under 8 or 25 kg; if unavailable, use adult pads placed anterior-posterior. Code example for impedance check: `if impedance > 150 ohms: reapply pads with gel; else: deliver shock`** (88% success)
   ```
   Use pediatric pads for children under 8 or 25 kg; if unavailable, use adult pads placed anterior-posterior. Code example for impedance check: `if impedance > 150 ohms: reapply pads with gel; else: deliver shock`
   ```

## Dead Ends

- **** — User thinks gel is optional because modern AED pads are 'self-adhesive' and pre-gelled; but if skin is dry or hairy, adhesion fails (70% fail)
- **** — User places pads over clothing or chest hair thinking it will still conduct (65% fail)