# AI suggests disabling ventilator high-pressure alarms to reduce noise in ICU, leading to missed patient-ventilator async

- **ID:** `medical/ventilator-pressure-alarm-disabled`
- **Domain:** medical
- **Category:** life_threatening
- **Error Code:** `VENT-ALARM-DISABLE-001`
- **Verification:** ai_generated
- **Fix Rate:** 75%

## Root Cause

Disabling ventilator high-pressure alarms removes critical safety monitoring for patient-ventilator dyssynchrony, which can cause barotrauma, volutrauma, or inadequate ventilation in mechanically ventilated patients.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| Drager Evita V500 | active | — | — |
| Hamilton G5 | active | — | — |
| Maquet Servo-u | active | — | — |
| GE Engstrom Carestation | active | — | — |

## Workarounds

1. **Adjust high-pressure alarm limit to 40 cmH2O for adult patients, and ensure all alarms are audible at nurse station via central monitoring system. Example: On Drager Evita, go to Alarm Settings → High Pressure → set to 40 cmH2O (not Off).** (85% success)
   ```
   Adjust high-pressure alarm limit to 40 cmH2O for adult patients, and ensure all alarms are audible at nurse station via central monitoring system. Example: On Drager Evita, go to Alarm Settings → High Pressure → set to 40 cmH2O (not Off).
   ```
2. **Use the ventilator's 'alarm pause' function only during suctioning or circuit changes, max 120 seconds. Re-enable immediately after procedure. Example: Press 'Alarm Pause' button once, confirm 120s countdown on screen, then resume monitoring.** (75% success)
   ```
   Use the ventilator's 'alarm pause' function only during suctioning or circuit changes, max 120 seconds. Re-enable immediately after procedure. Example: Press 'Alarm Pause' button once, confirm 120s countdown on screen, then resume monitoring.
   ```
3. **Implement a unit policy requiring all ventilator alarms to remain active with minimum 40 cmH2O threshold; use visual alarm indicators (flashing lights) for high-noise environments like ICU. Document in EMR: 'Ventilator alarms enabled, threshold set to 40 cmH2O'.** (90% success)
   ```
   Implement a unit policy requiring all ventilator alarms to remain active with minimum 40 cmH2O threshold; use visual alarm indicators (flashing lights) for high-noise environments like ICU. Document in EMR: 'Ventilator alarms enabled, threshold set to 40 cmH2O'.
   ```

## Dead Ends

- **** — Nurse places a towel over the alarm speaker to muffle sound — alarm still triggers but is inaudible, leading to missed events (40% fail)
- **** — Clinician reduces alarm threshold to 60 cmH2O instead of disabling — still misses high-pressure events for patients with high airway resistance (30% fail)
- **** — Staff sets alarm to 'pause' mode for 5 minutes repeatedly — cumulative effect leaves patient unmonitored for extended periods (50% fail)