On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
OCCLUSION A alarm indicating a blockage or air condition in proximal Line A, preventing proper fluid flow and stopping or preventing infusion delivery.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Stop the infusion and assess the patient condition
- Transition therapy to a backup infusion device if needed
- Confirm ordered medication delivery is maintained
Verify the Reported Alarm and Behavior
- Confirm the alarm message: “OCCLUSION A! Check Line A.”
- Observe when the alarm occurs (during infusion or startup)
- Check if infusion is stopped or unable to start
- Look for visible issues such as kinks or air in Line A
Check Line A for Kinks or Closed Clamps
- Inspect proximal tubing from fluid source to pump
- Look for kinks, pinched tubing, or tight bends
- Ensure all clamps are fully open
- Confirm tubing is not caught in the pump door or housing
Inspect Fluid Source and Container Setup
- Ensure IV bag is not empty
- Confirm proper spike insertion into the fluid container
- Verify venting is open if required
Check for Air in Line A
- Inspect tubing for visible air bubbles
- Focus on cassette area and proximal tubing
- Remove air per facility procedure
- Perform backprime if required
Verify Cassette and Door Seating
- Open and reseat the cassette
- Ensure proper alignment in the pump
- Close the door fully until securely latched
Restart Line A
- Press START after correcting any issues
- Observe for normal infusion without alarm recurrence
If the Problem Persists
If the alarm continues after all external checks:
- External causes have been ruled out
- Possible internal pressure sensor or pump mechanism issue
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Clinical Use Tip
Never troubleshoot occlusions or air conditions while connected to a patient. Always transition the patient to a backup device before making adjustments.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump alarming 'OCCLUSION A! Check Line A.' and infusion stopped."
Cause
What was observed during troubleshooting.
Example:
"Kink in proximal tubing restricting flow into Line A."
Resolution
What action was taken.
Example:
"Removed kink, verified clamps open, cleared alarm, and confirmed normal infusion."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Proximal occlusion alarms are often caused by simple external flow restrictions, but must be addressed immediately to ensure safe therapy. Always verify the full fluid path before escalating and document clearly.
That is successful troubleshooting.