Alarm Tests - GE Datex-Ohmeda Aisys Carestation Reference Manual

Aisys

3.8 Alarm tests

NOTE: If an Airway Gas Module is
installed, FiO2 readings are
taken from the module instead
of the O sensor in the breathing
2
circuit. When using an Airway
Gas Module, a sample line must
be connected to the patient
circuit for testing the O alarms.
2
3-10
1. Connect a test lung to the patient connection.
2. Start a case.
3. Set the Bag/Vent switch to Vent.
4. Set the O concentration to 30%, and allow the O
2
• For machines configured to individual gas control, set O
approximately 500 ml/min and Air flow to approximately 5 l/min.
5. Test the O alarms:
2
• Set the FiO2 low alarm limit to 50%. Make sure an FiO2 low alarm
occurs.
• Set the FiO2 low alarm limit back to 21% and make sure that the
FiO2 low alarm cancels.
• Set the FiO2 high alarm limit to 50%.
• Push and hold the O
• Make sure the FiO2 high alarm occurs.
• Release the O flush button.
2
• Set the FiO2 high alarm limit back to 100%. Make sure that the
FiO2 high alarm cancels.
6. Test the MVexp low alarm:
• Go to the Alarm Setup menu.
• Set the MV low alarm limit to greater than the measured minute
volume.
• Make sure that a MVexp low alarm occurs.
• Set the MV low alarm limit to off.
7. Test the Ppeak high alarm:
• Set the Pmax to less than the peak airway pressure.
• Make sure that the Ppeak high alarm occurs.
• Set the Pmax to the desired level.
8. Test the PEEP high. Blockage? alarm:
• Close the APL valve.
• Set the Bag/Vent switch to Bag. Mechanical ventilation stops.
• Block the patient connection and push the O
• Make sure that the PEEP high. Blockage? alarm occurs after
approximately 15 seconds.
9. Test the Ppeak low. Leak? alarm:
• Unblock the patient connection.
• Set the Bag/Vent switch to Vent.
• Set the tidal volume and total flow to minimum.
• Other alarms such as MVexp low can occur.
• Make sure that the Ppeak low. Leak? alarm occurs.
10. Set all alarm limits to approved clinical values.
2
flush button.
2
2
reading to stabilize.
flow to
2
flush button.
04/08 M1046983