On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Distal OCCLUSION alarm during backprime or cassette check causing flow blockage and preventing proper priming or infusion.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Stop the infusion if flow is interrupted
- Move therapy to a backup infusion device if needed
2. Verify the Reported Alarm and Behavior
- Confirm the alarm message is displayed
- Observe when it occurs (backprime, cassette check, or infusion)
- Check for resistance during priming
3. Check Distal IV Line for Kinks or Obstructions
- Inspect tubing from pump to patient
- Ensure clamps are open
- Check for pinched or compressed tubing
4. Inspect Patient-Side Components
- Check IV site for infiltration or blockage
- Inspect filters and connectors
- Look for buildup or crystallization
5. Verify Cassette and Door Operation
- Ensure cassette is properly seated
- Open and close door fully
- Check for debris or misalignment
6. Perform Backprime After Resolving Occlusion
- Run backprime procedure
- Observe for smooth fluid flow
- Confirm alarm does not return
7. Substitute IV Set if Needed
- Replace tubing/cassette with known good set
- Retest operation
8. Return Device to Service if Resolved
- Resume infusion
- Monitor briefly for recurrence
If the Problem Persists
If all external causes have been ruled out and the alarm continues:
- Remove the device from service
- Label the device Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot an occlusion on an active patient without confirming line patency. Pressure buildup can release as an unintended bolus.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump alarming 'Distal OCCLUSION! Resolve then Backprime' during backprime."
Cause
What was observed during troubleshooting.
Example:
"Kinked distal tubing near patient connection causing flow obstruction."
Resolution
What action was taken.
Example:
"Tubing repositioned, occlusion cleared, backprime successful, device tested."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Most distal occlusion alarms are caused by simple downstream restrictions. A systematic external check ensures safe resolution and avoids unnecessary equipment removal.
That is successful troubleshooting.