GE Datex-Ohmeda Aisys Carestation Reference Manual page 286

Aisys
7-104
Leak < 250 ml
If the
• Flow 1 l/min O2 until pressure increases to 20 cm H
• If pressure does not increase to 20 cm H
"Cannot pressurize circuit". If it does reach 20 cm H
100 ml/min.
• If a flow of 100 ml/min reaches 30 cm H
less than 100 ml/min" and continue to next step. If it does not, gradually
increase flow until pressure reaches 30 cm H
• If a flow is found that reaches 30 cm H20 and that flow is less than
750 ml/ min continue to next step but indicate that, "Ventilator circuit leak is
## ml/ min".
• If the circuit pressure does not increase to 30 cm H2O with 750 ml/min flow,
fail with "Ventilator circuit leak is greater than 750 ml/min".
Step 3: "Mechanical Ventilation" - Tests the Mechanical Ventilation by delivering small
Pressure Controlled breaths and look for alarms:
• If alarm condition is detected it will be stated in final menu.
• Continue to next step.
Step 4: "Circuit Compliance" - Tests the circuit compliance by delivering small
(15 cm H O) Pressure Controlled breaths, measures the circuit volume via the
2
expiratory flow sensor, and looks for alarms:
• If the measured volume is less than 15 ml (either due to small patient circuit
or flow sensor issues) a "Check Flow Sensor" alarm may be generated that
prohibit the calculation of circuit compliance, state that "Can not measure
circuit compliance".
• If alarms did not occur then calculate compliance and state, "Circuit
Compliance YYY ml/ cm H20"
Step 5: "O Flow" - Run the mixer tests on O
2
and 10L flow delivery test and leak test:
• If O2 pressure is low, fail with "Low O2 Supply pressure".
• If mixer does not fail the 3L, 10L and the leak test, continue with the next step.
• If mixer fails the 3L, 10L or the leak test, fail with the mixer failure.
Step 6: "AIR Flow" – Run the mixer tests on AIR channel (Check gas supply and run a
3L and 10L flow delivery test and leak test:
• If O2 is drive gas and air supply is low, continue with next step and indicate,
"Could not test air".
• If Air is the drive gas and air supply is low, continue with next step and
indicate, "Ventilator has not drive gas".
• If mixer does not fail the 3L,10L and the leak test, continue with the next step.
• If mixer fails the 3L,10L or the leak test, fail with the mixer failure.
Yes
is set to :
0 within in 15 seconds, fail with
2
0 or greater, display "Circuit leak is
2
2
channel (Check gas supply and run a 3L
2
0.
2
0, change flow to
2
0.
04/08 M1046983