Biolight Meditech P1 - CO Measurement Limitations; Monitoring Procedure

P1 Patient Monitor User’s Manual
14-2

CAUTION:
 When the patient is being treated with aerosolized drugs, the measured EtCO
2
value may be inaccurate and is not recommended for use in this situation.
 The EtCO
2
value measured by the CO
2
module may differ from the CO
2
partial
pressure value measured by blood gas analysis.
 The CO
2
module has an automatic alarm suppression function, and the CO
2
module performs a physiological alarm only after the respiratory wave is
detected. When monitoring the patient with the CO
2
module, make sure the
device is properly connected to the patient.
14.3. CO
2
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 (100cmH
2
O) and abnormal pressure change
of the gas path;
 Other sources of interference (if any).
Measurement accuracy of the sidestream/microflow CO
2
module may be affected by
the breath rate and inspiration/ expiration (I/E) ratio as follows:
 EtCO
2
value is within specification for breath rate60rpm and I/E ratio 1:1.
 EtCO
2
value is within specification for breath rate30rpm and I/E ratio 2:1.
14.4. Monitoring Procedure
14.4.1. Measure Using Mainstream CO
2
Module
1. Attaching the CO
2
sensor cable
Plug the cable of CO
2
sensor into CO
2
connector on the CO
2
plug-in module.
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