4 Preoperative Tests
1009-0307-000
4-17
5. Turn the Bag/Vent switch to Bag and back. Make sure that:
•
Mechanical ventilation starts.
•
A subatmospheric pressure alarm does not occur.
•
The ventilator displays the correct data.
•
The bellows inflate and deflate during mechanical ventilation.
6. Set the O
2
flow control to 5 L/min.
7. Make sure that:
•
The end expiratory pressure is approximately 0 cm H
2
O.
•
The ventilator displays the correct data.
•
The bellows inflate and deflate during mechanical ventilation.
8. Test the O
2
monitor and alarms:
•
Remove the O
2
sensor and make sure the sensor measures
approximately 21% O
2
in room air.
•
Set the low O
2
alarm to 50% and make sure a low O
2
alarm occurs.
•
Set the low O
2
alarm back to 21% and make sure that alarm cancels.
•
Put the O
2
sensor back in the circuit.
•
Set the High O
2
alarm to 50%.
•
Push the flush button to fill the breathing system.
•
Make sure the high O
2
alarm comes on.
•
Set the high O
2
alarm back to 100% and make sure that alarm
cancels.
•
After 2 minutes in pure O
2
, make sure that the sensor measures
approximately 100% O
2
.
9. Test the low minute volume alarm:
•
Go to the alarms menu.
•
Set the alarm limit for low minute volume to 6.0 L/min.
•
Make sure that a low minute volume alarm occurs.
•
Go to the alarms menu.
•
Set the low minute volume alarm to Off.
10. Test the high airway pressure alarm:
•
Set P
limit
to less than the peak airway pressure.
•
Make sure that the high airway pressure alarm occurs.
•
Set P
limit
back to 40.
11. Test the apnea and low airway pressure alarms:
•
Remove the test lung from the patient connection.
•
Other alarms such as low minute volume can occur.
•
Make sure that the low airway pressure and apnea alarms occur. The
apnea alarm occurs after 30 seconds.
12. Test the sustained airway pressure alarm:
