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Manufacturer
Model
What This Guide Helps With
Alarm: Airway Pressure Low indicating the ventilator cannot maintain set airway pressure, commonly due to leaks, disconnections, or failure within the breathing circuit, resulting in inadequate ventilation.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Immediately assess the patient
- Provide manual ventilation if needed
- Transfer to a backup ventilator if unstable
2. Verify the Reported Alarm and Behavior
- Confirm “Airway Pressure Low” alarm is displayed
- Observe for reduced or absent delivered volume
- Listen for audible leaks or inability to build pressure
3. Check Patient Circuit Connections
- Ensure all tubing connections are tight
- Inspect connections at humidifier, filters, and Y-piece
- Reconnect any loose or disconnected tubing
4. Check for Circuit Leaks or Damage
- Inspect tubing for cracks, holes, or wear
- Check water traps and filters for proper seating
- Replace circuit if damage is found
5. Verify Patient Interface (ET Tube or Mask)
- Confirm ET tube connection and cuff inflation
- Check mask seal if using non-invasive ventilation
- Look for air escaping around the interface
6. Check Expiratory Valve Assembly
- Remove and reseat the expiratory valve
- Ensure it is clean and free of debris
- Confirm proper installation
7. Review Ventilator Settings
- Verify pressure limits and mode settings
- Ensure settings are appropriate for the patient
- Adjust if clinically appropriate
8. Perform System Check
- Run ventilator self-test or leak check if available
- Observe for any failure or leak indication
If the Problem Persists
If all external causes have been ruled out and the alarm continues, this indicates a likely internal issue such as a pressure sensor fault or internal leak.
- Remove the ventilator from service
- Label Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot a ventilator while actively supporting a patient. Always move the patient to a backup device before performing adjustments or troubleshooting steps.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Ventilator alarming 'Airway Pressure Low' with reduced volume delivery during use."
Cause
What was observed during troubleshooting.
Example:
"Leak identified at loose circuit connection near humidifier."
Resolution
What action was taken.
Example:
"Secured connection and verified normal airway pressure restored."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Low airway pressure alarms should be treated as potential ventilation failure. Always prioritize patient safety and check simple external causes like leaks and connections before escalating.
That is successful troubleshooting.