User's Manual

16 - 2
To measure CO
2
using the AG module, see 17Monitoring Anesthetic Gas (AG).
16.3 CO
2
Safety Information
WARNING
• Route all tubing away from the patient’s throat to avoid strangulation.
CAUTION
• Shaking the CO
2
module during O
2
measurement may lead to a distorted O2 waveform or inaccurate
O2 measurement
• Remove the airway sample line from the patient’s airway while nebulized medications are being
delivered. Measuring CO
2
during nebulization may lead to inaccurate CO
2
readings.
• EtCO
2
values measured from the CO
2
module may differ from those from the blood gas analysis.
• Avoid mechanical shock to the sidestream CO
2
module.
NOTE
• The CO
2
module automatically suppresses physiological alarms until breathing waves have been
detected. Ensure that the patient is properly connected when using the CO
2
module.
16.4 CO
2
Measurement Limitations
The following factors may influence the measurement accuracy:
■ Leaks or internal venting of sampled gas
■ Mechanical shock
■ Cyclic pressure up to 10 kPa (100 cmH
2
O)
■ Other sources of interference, if any
For more information, refer to
A.13.9CO
2 Specifications
.
CAUTION
• Measurement accuracy of the sidestream CO
2
module may be affected by the breath rate and
inspiration/expiration (I/E) ratio.
• Measurement accuracy of the microstream CO
2
module may be affected by the breath rate.
16.5 CO
2
Display
The CO
2
numeric and waveform areas provide FiCO
2
measurement, EtCO
2
measurement, awRR measurement,
and a CO
2
waveform.
(1) CO
2
waveform (2) Fraction of inspired CO
2
(FiCO
2
)
(3) End tidal CO
2
value (EtCO
2
) (4) Airway respiration rate (awRR)
(1) (2) (3) (4)