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Compact Airway modules
Document No. 800 1009-1
29
Anesthesia Agent measurement
19.
Agent ID reliability.
Feed calibration gas (order code 755583) continuously at least for 30 seconds and check
that the ‘ID’ in the service menu shows ‘DES’ and that the value for ‘ID unrel.’ is lower than 50.
If the value is higher, repeat the gas calibration and check the value again.
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Patient Spirometry measurement
20.
Enter the service menu
Spirometry
:
Gas Unit - Spirometry
Connect a clean Spirometry tube to the module and a clean D-lite to the other end of the
tube. Block the D-lite’s sampling line port, for example with a Luer stopper.
NOTE: Make sure that the date marking on the D-lite is 10/94 or newer.
Take the D-lite into your hand and occlude both ends tightly with your fingers (or with both
hands). Pressing creates a pressure inside the D-lite. Check that pressure near 5 cmH
2
O is
generated (the ‘Aw Pressure’ -value in the service menu).
If the system leaks heavily, no pressure will be generated.
If there is a small leak in the connections, the monitor will measure a pressure difference
which is then interpreted as flow and seen on the monitor screen. The pressure waveform
(and the ‘Aw Pressure’ -value) decreases slowly and the flow waveform (the ‘Flow’ -value)
either goes above, or below the zero line, depending on which of the connectors is leaking.
In case of leakage, first check all the connections and try again.
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21.
Remove the blockage from the sampling line port and connect the sampling line. Breath
through the wider side of the D-lite. Check that the flow waveform moves downwards when
you breath in, and upwards when you breath out.
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22.
If possible, check the Side Stream Spirometry measurement also with the Spirometry Tester
(order code 884202). Follow the instructions that are supplied with the tester.
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