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Asset Type
Continuous Renal Replacement Therapy (CRRT)
Manufacturer
Model
What This Guide Helps With
This guide assists Clinical Engineering in troubleshooting situations where the Vantive PrisMax CRRT system triggers a blood leak detector alarm. Symptoms may include alarm messages indicating a blood leak, sudden machine pause, or unexpected treatment interruptions. Most issues originate from external factors such as sensor contamination, mispositioned tubing, or residual fluids before considering internal sensor failure.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Pause the therapy and isolate the patient from the affected circuit if safe.
- Move the patient to an alternative CRRT machine or ensure vascular access is secured.
Why: Prevents patient exposure to potential blood leakage into the effluent line.
Inspect the Blood Leak Detector Sensor Area
- Check for visible blood, condensation, or fluid on the detector window or optical sensors.
- Clean the sensor using manufacturer-approved wipes or procedures.
Why: Dirt, water droplets, or condensation can trigger false alarms.
Check Tubing and Connections
- Ensure all bloodlines are properly seated, clamped, and routed correctly through the detector.
- Verify that the sensor slot is free of kinks or tubing misalignment.
Why: Improperly positioned tubing can interrupt optical detection, causing an alarm.
Inspect for Leaks or Damaged Bloodlines
- Examine arterial and venous lines for cracks, loose connectors, or leaks.
- Replace any compromised lines before restarting therapy.
Why: Real blood leaks must be corrected immediately to prevent patient harm.
Reset the Machine Alarm
- After inspection and correction, reset the alarm and re-prime the circuit if necessary.
- Observe the detector to ensure no alarm recurs.
Verify Consumables and Expiry
- Confirm the dialyzer, tubing set, and detector sensors are within their usage limits.
- Replace any expired or previously flagged consumables.
If the Problem Persists
External checks have ruled out misalignment, contamination, and tubing damage. The alarm may indicate an internal sensor fault.
- Remove the machine from service.
- Label Out of Service.
- Send to biomedical repair or Vantive service for bench evaluation.
Knowing when to escalate is proper troubleshooting.
Clinical Use Tip
- Never attempt to troubleshoot the blood leak alarm while blood is actively circulating in the patient.
- Always ensure patient stability and a secure alternative therapy route.
- Avoid bypassing alarms, as they are critical for patient safety.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
“Blood leak detector alarm triggered during therapy.”
Cause
What was observed during troubleshooting.
Example:
“Sensor contaminated with condensation and tubing slightly misaligned in detector slot.”
Resolution
What action was taken.
Example:
“Cleaned sensor window, repositioned bloodline, reset alarm, and therapy resumed without further alarms.”
Helpful Details to Include
- Sensor inspected and cleaned
- Tubing alignment verified
- Bloodlines checked for leaks
- Alarm reset procedure documented
- Machine returned to service status
Final Thought
Patient safety is the top priority. Logical troubleshooting involves ruling out external, easily correctable issues before assuming internal sensor failure. Proper CCR documentation ensures traceability and supports safe escalation when required.
That is successful troubleshooting.