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What This Guide Helps With
EXP PORT LEAKAGE !! alarm indicating unintended expiratory flow during inspiration, causing ventilation leak, inaccurate delivery, or inability to maintain airway pressure.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Remove the anesthesia machine from active patient use if ventilation is unstable or inaccurate
- Transition the patient to alternate ventilation
- Confirm stable ventilation on backup equipment
Verify the Reported Alarm and Behavior
- Confirm the alarm EXP PORT LEAKAGE !! is present
- Observe when the alarm occurs (startup vs during ventilation)
- Check ventilation mode (Volume, Pressure, Pressure Support)
- Look for signs of leak such as low tidal volume or inability to maintain pressure
Check Breathing Circuit for Leaks or Disconnections
- Inspect the full breathing circuit from machine to patient
- Ensure all connections are tight and secure
- Check for disconnected hoses
- Look for cracks, tears, or worn components
Check Expiratory Valve Assembly
- Inspect the expiratory valve and valve disk
- Remove and check for moisture, debris, or residue
- Ensure valve disk is properly seated
- Confirm smooth movement without sticking
Check Expiratory Control Line (Hose Line)
- Inspect hose line for kinks, disconnections, or damage
- Ensure proper routing and secure connections
Check Flow Sensor and Connections
- Ensure flow sensor cable is securely connected
- Inspect for visible damage or contamination
- Verify proper placement in the breathing system
Perform Flow Sensor Calibration
- Perform manufacturer-recommended calibration procedure
- Ensure calibration completes successfully
Re-test the System
- Power cycle the unit
- Run system check or leak test if available
- Observe for alarm recurrence during ventilation
If the Problem Persists
If the alarm continues after all external checks:
- External and common causes have been ruled out
- The issue likely indicates internal valve control failure or sensor/system fault
- Remove device from service
- Label Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot leak-related alarms on an active patient. Move the patient to a backup device before performing any troubleshooting.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Unit displaying EXP PORT LEAKAGE !! alarm with inability to maintain airway pressure during ventilation."
Cause
What was observed during troubleshooting.
Example:
"Leak traced to contaminated expiratory valve or no external issue found indicating possible internal failure."
Resolution
What action was taken.
Example:
"Cleaned and reseated expiratory valve and verified connections, or removed from service and sent for repair when issue persisted."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Leak-related alarms should always be approached from external to internal causes. Proper inspection of circuits and valves combined with timely escalation ensures safe and effective troubleshooting.
That is successful troubleshooting.