On this page
Asset Type
Manufacturer
Model
What This Guide Helps With
Addresses failure of the BP cuff to inflate during stress testing due to connection, cuff, hose, or system setup issues.
Step-by-Step Troubleshooting
Ensure Patient Safety First
- Stop the stress test if the cuff is not functioning properly.
- Ensure the patient is stable and monitored by alternate means if needed.
Expected: Patient remains safe without reliance on faulty BP readings
Why it matters: Inaccurate or absent BP readings during stress testing can lead to unsafe clinical decisions
Verify the Reported Issue
- Attempt to initiate a manual BP cycle during the test or in standby mode.
Expected: Confirm cuff does not inflate at all or inflates inconsistently
Why it matters: Confirms true inflation failure vs timing or trigger issue
Check Cuff and Hose Connections
- Inspect the cuff tubing from cuff to monitor
- Ensure hose is fully seated at the Tango+ port
- Check for loose, cracked, or disconnected fittings
Expected: Secure, airtight connection
Why it matters: Any air leak will prevent proper inflation
Inspect the Cuff for Damage or Incorrect Size
- Check for tears, worn Velcro, or internal bladder leaks
- Verify proper cuff size for patient
- Swap with a known good cuff if available
Expected: Cuff holds pressure and is appropriate size
Why it matters: Damaged cuffs or improper sizing prevent inflation or pressure buildup
Check Hose for Kinks or Obstructions
- Trace the full length of tubing
- Look for sharp bends, pinching, or internal blockage
- Ensure tubing is not caught under equipment or treadmill components
Expected: Unobstructed airflow path
Why it matters: Restricted airflow prevents cuff pressurization
Verify Mode and Trigger Settings
- Confirm correct mode (exercise/stress mode) is selected
- Verify trigger source (ECG gating or manual) is functioning
Expected: System initiates inflation when triggered
Why it matters: Incorrect settings may prevent inflation command from being sent
Check for Audible Pump Operation
- Initiate a BP cycle and listen for pump activity
- Note any unusual noise or complete silence
Expected: Audible pump sound during inflation attempt
Why it matters: No sound suggests pump or internal pneumatic failure
Test with Known Good Accessories
- Replace cuff
- Replace hose
- Retry inflation
Expected: Inflation works with known good components
Why it matters: Confirms issue is accessory-related vs device-related
Power Cycle the Device
- Turn the Tango+ off
- Wait 10–15 seconds
- Power back on and retry BP measurement
Expected: System resets and attempts normal operation
Why it matters: Clears minor software or control faults
If the Problem Persists
If cuff, hose, connections, and settings have been verified and the cuff still does not inflate, the issue is likely internal (pump, valve, or pneumatic system failure).
Remove the device from service, label it Out of Service, and send for repair or bench evaluation.
Clinical Use Tip
Never attempt to troubleshoot BP measurement issues during an active stress test. Always stabilize the patient and use alternate monitoring before proceeding.
Work Order Documentation (CCR Method)
CCR = Complaint, Cause, Resolution
Complaint
What was reported by the clinical staff.
Example:
"Cuff would not inflate during treadmill stress test on Tango+ monitor."
Cause
What was observed during troubleshooting.
Example:
"Failed internal pump—no audible operation during inflation attempt after ruling out cuff and hose."
Resolution
What action was taken.
Example:
"Removed device from service and sent for repair; verified function with known good accessories prior to escalation."
Helpful Details to Include (If Known)
- Alarm behavior or absence of alarms
- Accessories swapped (cuff, hose)
- Power behavior and outlet verification
- Environmental factors (treadmill interference, tubing routing)
- Indicator lights or system response
- Final device status (removed from service or returned to use)
Final Thought
Effective troubleshooting starts with simple external checks like cuffs, hoses, and settings before assuming internal failure. Patient safety always comes first, and clear documentation ensures continuity and accountability in Clinical Engineering workflows.
That is successful troubleshooting.