Monitoring Carbon Dioxide
13-7
13.4.4 Setting up CO
2
Compensations
WARNING
z Make sure that the appropriate compensations are used. Inappropriate
compensations may cause inaccurate measurement values and result in
misdiagnosis.
For the sidestream CO
2
module, in the [CO2 Setup] menu, respectively select:
îš„ [O2 Compen] and toggle between [On] and [Off]. When the amount of O
2
in the
ventilation gas mixture is greater than 50%, you’d better switch this compensation on.
îš„ [N2O Compen] and toggle between [On] and [Off]. When the amount of N
2
O in the
ventilation gas mixture is greater than 30%, you’d better switch this compensation on.
îš„ [Des Compen] and toggle between [On] and [Off]. If desflurane is present in the
ventilation gas mixture, you’d better switch this compensation on.
For the microstream CO
2
module, gas compensations are not required.
For the mainstream CO
2
module, in the [CO2 Setup] menu, respectively select:
îš„ [Balance Gas] and toggle between [Room Air] and [N2O]. Select [Room Air] when
air predominates in the ventilation gas mixture and select [N2O] when N
2
O
predominates in the ventilation gas mixture.
îš„ [O2 Compen] and then select [Off] or an appropriate setting according to the amount of
O
2
in the ventilation gas mixture. When the amount of O
2
is less than 30%, you’d better
switch this compensation off.
îš„ [AG Compen] and enter the concentration of anesthetic gas present in the ventilation
gas mixture. This could compensate for the effect of AG on the readings.
13.4.5 Humidity Compensation for Side/Microsctream CO
2
Readings
Sidestream and microstream CO
2
modules are configured to compensate CO
2
readings for
either Body Temperature and Pressure, Saturated Gas (BTPS), to account for humidity in the
patient’s breath, or Ambient Temperature and Pressure, Dry Gas (ATPD).
1. In the [CO2 Setup] menu, select [Humidity Compen].
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