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What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting B. Braun Space Infusion Pumps that trigger incorrect flow rate or rate deviation alarms. These alarms indicate the pump is delivering fluid faster or slower than programmed. In many cases, the cause is external or setup-related rather than internal pump failure, such as tubing misplacement, incorrect cassette, or occlusion in the line.
Step-by-Step Troubleshooting
Verify Pump Programming
- Confirm the infusion rate and volume are correctly entered on the pump.
- Ensure the correct drug library profile is selected if using the integrated library.
Why: User entry errors are a common cause of flow rate alarms.
Check IV Line and Tubing
- Inspect the IV line for kinks, clamps, or occlusions.
- Confirm the correct tubing set or cassette is installed for the intended flow rate.
Why: Misplaced tubing or blocked lines can alter flow rates.
Ensure Proper Cassette Seating
- Remove and reseat the cassette, ensuring it clicks into place without resistance.
- Examine for any damage, debris, or residue that may prevent proper sensor detection.
Why: Improper cassette placement can trigger rate deviation alarms.
Check for Air or Bubbles
- Inspect the line for air bubbles or partially collapsed bags that can affect flow.
Why: Air in the line can cause inconsistent flow and alarms.
Verify Pump Orientation
- Ensure the pump is positioned upright on a stable surface or properly docked in the station.
Why: Some pumps have flow sensors sensitive to tilt or movement.
Inspect Power Source and Battery
- Confirm the pump is receiving stable power from the dock or outlet.
- If running on battery, ensure sufficient charge.
Why: Voltage fluctuations can affect pump performance and alarms.
Reset the Pump if Safe
- If external checks are complete, power cycle the pump.
- Reprogram and attempt a test infusion with water or saline if allowed by protocol.
Why: Software glitches can sometimes cause false rate deviation alarms.
If the Problem Persists
External causes have been ruled out. The device should be:
- Removed from service
- Labeled Out of Service
- Sent for vendor repair or internal bench evaluation
Knowing when to escalate avoids unnecessary risk to patients and prevents further device damage.
Clinical Use Tip
Do not troubleshoot on an active patient. Move the patient to a different pump if an alarm persists. Ensure infusion continuity and patient safety before any pump testing.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Pump displays rate deviation alarm; infusion rate does not match programmed value.”
Cause
What was observed during troubleshooting.
Example:
“IV tubing kinked and cassette not fully seated; external check completed.”
Resolution
What action was taken.
Example:
“Corrected tubing placement, reseated cassette, and test infusion ran within acceptable limits. Pump returned to service.”
Helpful Details to Include
- Outlet tested and functional
- Tubing swapped or checked
- Cassette seating verified
- Air in line or bag collapse noted
- Alarm behavior and logs recorded
- Final device status: operational / OOS
Final Thought
Patient safety is the priority. Start with logical, external checks before assuming internal failure. Accurate documentation ensures clarity for future troubleshooting and highlights proper escalation procedures.
That is successful troubleshooting.