7. Oridion CO
2
Monitoring
7.1. Overview of CO
2
Monitoring
CO
2
monitoring – also known as capnography – is a non-invasive method for
monitoring the level of carbon dioxide in a patient’s breath in order to help assess
their ventilation status. The Oridion Microstream® modules used in the
Nightingale PPM3 utilize a process known as sidestream capnography, whereby a
portion of a patient’s inhaled and exhaled gases are diverted and continuously
passed through an infrared spectrometer. From the amount of infrared light
absorbed, the amount of CO
2
present can be determined. In order to sample the
patient’s breath, a sampling line is typically placed in the nose and/or in the
mouth for non-intubated patients and in-line with the airway tubing for intubated
patients.
The CO
2
monitoring capabilities of the Nightingale PPM3 configured with
Oridion Microstream® capnography include:
• Measuring the patient’s end-tidal carbon dioxide (ETCO
2
)
• Measuring the patient’s fractional inspired carbon dioxide (FICO
2
)
• Calculating the patient’s respiration rate (RRc) from CO
2
• Calculating the patient’s Integrated Pulmonary Index (IPI)
• Displaying CO
2
waveform (capnograph) continuously
• Detecting Apnea conditions with a configurable time setting
7.2. Getting Started with Oridion CO
2
on the PPM3
To begin CO
2
monitoring with Oridion Microstream® sidestream capnography,
use the following procedure:
1. If CO
2
monitoring has not been enabled (indicated by the presence of
impedance respiration box with blue labels underneath the green HR
parameter box), press the SETUP key on the PPM3, scroll the control
knob to Parameters, press the knob, press on the highlighted "ETCO
2
Enabled," scroll to "Yes," and press the knob. Press the Main Screen key
to apply the changes. Now the CO
2
waveform area and parameter box
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