S10/S12/S10A/S12A Patient Monitor User’s Manual
15-2
The CO2 module has an automatic alarm suppression function, and the CO2
module performs a physiological alarm only after the respiratory wave is
detected. When monitoring the patient with the CO2 module, make sure the
device is properly connected to the patient.
15.3. CO2 Measurement Limitations
The following factors may affect the accuracy of the measurement:
Leaks or internal venting of sampled gas;
Mechanical shock;
Cyclical pressure of up to 10kPa (100cmH2O) and abnormal pressure change
of the gas path;
Other sources of interference (if any).
Measurement accuracy of the sidestream/microflow CO2 module may be affected by
the breath rate and inspiration/ expiration (I/E) ratio as follows:
EtCO2 value is within specification for breath rate60rpm and I/E ratio 1:1.
EtCO2 value is within specification for breath rate30rpm and I/E ratio 2:1.
15.4. Monitoring Procedure
15.4.1. Mainstream CO2 Module
1. Attaching the CO
2
sensor cable
Plug the cable of CO
2
sensor into CO
2
connector on the monitor.
2. Selecting a proper airway adapter
Select an airway adapter based on the patient's size, ET tube diameter and
monitoring situation. For more information refer to the following table or contact
manufacturer.
Airway Adapter Type ET Tube Diameter
Pediatric/Adult (Disposable)
＞4.0mm
Adult (Reusable)
＞4.0mm
Neonatal/Pediatric (Disposable) 4.0mm
Neonatal (Reusable) 4.0mm
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