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What This Guide Helps With
This guide addresses the “Proximal AIR Line A! Backprime.” alarm, which indicates that air has been detected in the proximal tubing. This condition stops infusion and requires removal of air before therapy can safely continue.
Step-by-Step Troubleshooting
1. Ensure Patient Safety First
- Stop the infusion immediately
- Transfer the patient to a backup infusion device if therapy is required
- Disconnect from the patient before troubleshooting air in the line
2. Verify the Reported Alarm and Behavior
- Confirm alarm message: “Proximal AIR Line A! Backprime.”
- Determine when the alarm occurs (startup, infusion, or priming)
- Check if infusion has stopped automatically
- Look for visible air bubbles in proximal tubing
3. Inspect Proximal IV Line for Air (Most Common Cause)
- Check tubing from fluid source to pump
- Look for air bubbles or gaps in fluid column
- Ensure fluid bag is not empty or nearly empty
- Confirm spike is fully inserted into container
4. Check for Loose Connections or Improper Setup
- Tighten all luer connections
- Verify tubing segments are securely connected
- Inspect for cracks or damaged tubing
5. Perform Backprime Procedure
- Clear program if required
- Open cassette door
- Perform backprime per facility procedure
- Remove all visible air from tubing
6. Reinstall Cassette and Restart Infusion
- Close cassette door securely
- Reprogram infusion if needed
- Restart Line A
7. Substitute Administration Set if Issue Persists
- Replace tubing with a new, properly primed administration set
- Ensure full priming before reconnecting
If the Problem Persists
If the alarm continues after removing air, securing connections, and replacing the set, external causes have been ruled out. Internal air sensor or detection system failure is possible.
- Remove device from service
- Label as Out of Service
- Send for repair or bench evaluation
Clinical Use Tip
Never troubleshoot air-in-line alarms while connected to an active patient. Always disconnect and ensure the line is fully air-free before resuming infusion.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Pump alarming ‘Proximal AIR Line A! Backprime,’ infusion stopped."
Cause
What was observed during troubleshooting.
Example:
"Air present in proximal IV tubing due to incomplete priming or loose upstream connection."
Resolution
What action was taken.
Example:
"Removed air via backprime, secured connections, replaced tubing if needed, and verified proper operation."
Helpful Details to Include (If Known)
- Alarm behavior
- Accessories swapped
- Power behavior
- Environmental factors
- Indicator lights
- Final device status
Final Thought
Air detection alarms must always be treated as a true safety concern. Confirm the source, remove all air, and only return the pump to service once safe operation is verified.
That is successful troubleshooting.