Patient Circuit Disconnect Alarm Troubleshooting

Patient Circuit Disconnect activates when VOCSN detects a large leak in an active, passive, or valveless Ventec One-Circuit™. During High Flow therapy, it activates when no patient breathing is detected for 20 seconds. 

Follow these steps to troubleshoot this alarm:

1. Check the VOCSN Leak monitor. Press the MONITORS tab, and then locate the Leak monitor. If it is high, locate and resolve any unintentional leaks in the patient circuit (and around the patient interface).
2. If the leak is high but intentional, it may be useful to desensitize the Patient Circuit Disconnect alarm. 
1. Press the THERAPY tab.
2. Press the V icon for VENTILATION.
3. Press SETTINGS & ALARMS. 
4. Scroll to PATIENT CIRCUIT DISCON. 
5. Press the alarm name to highlight it, and then press EDIT. 
6. Use the SENSITIVITY toggle to set the alarm sensitivity appropriate for large leaks: 75-175 L/min @ 20 cmH2O.
3. Run a Pre-Use Test and ensure it passes. If it does not pass, see Why Is the Pre-Use Test Failing?
4. If used, verify the high flow nasal cannula (or other interface) is properly fitted to the patient. 
5. If the problem persists, replace the high flow nasal cannula and/or the patient circuit.