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Measurement Principles; Measuring Co2 Using M3014a Or X2 - Philips IntelliVue MX800 Instructions For Use Manual

Patient monitoring.
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13 Monitoring Carbon Dioxide
Low etCO2 values: Leakages in the breathing system or sampling system may cause the displayed
etCO
values to be significantly too low. Always connect all components securely and check for leaks
2
according to standard clinical procedures. Displacement of the nasal or combined nasal oral cannulas
can cause lower than actual etCO
readings may be slightly lower than actual in patients breathing through the mouth only.

Measurement Principles

For both mainstream and sidestream measurements, the measurement principle is infrared
transmission, where the intensity of infrared light passing the respiratory gas is measured with a photo
detector. As some of the infrared light is absorbed by the CO
the gas probe depends on the concentration of the measured CO
When using a wet ventilator circuit, monitor mainstream CO
CO
.
2
The partial pressure is calculated from the gas concentration by multiplying the concentration value
with the ambient pressure.
The measurement provides:
a CO
an end tidal CO
an inspired minimum CO
an airway respiration rate (awRR): the number of breaths per minute, calculated from the CO
waveform.
Depending on the
highest CO
the etCO

Measuring CO2 using M3014A or X2

The M3014A Capnography Extension or the X2 with the CO
carbon dioxide in a patient's expired gas using the mainstream method or the sidestream method.
The mainstream CO
pediatric and neonatal patients. The sidestream CO
accessories, with intubated and non-intubated adult, pediatric, infant and neonatal patients. With
intubated patients, a sample of the respiratory gas is drawn from the patient's breathing circuit through
an airway adapter and a gas sampling tube. With non-intubated patients, the gas sample is drawn
through a nasal or oral-nasal cannula.
212
2
waveform.
2
(etCO
) value: the CO
2
2
(imCO
2
Max Hold
setting configured for your monitor, the etCO
value measured within the configured time period (
2
numeric shows breath-to-breath value (
2
measurement can be used, with appropriate accessories, with intubated adult,
2
readings. Even with combined nasal oral cannulas, the etCO
value measured at the end of the expiration phase.
2
): the smallest value measured during inspiration.
2
Max Hold
measurement can be used, with appropriate
2
molecules, the amount of light passing
2
.
2
if available, in preference to sidestream
2
numeric shows either the
2
Max Hold
10 sec
set to
Off
set to
).
option measures partial pressure of
2
2
2
20 sec
or
) or

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