Philips Efficia DFM100 - Monitoring CO2; Overview

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9
Monitoring CO
2
This chapter describes how to monitor carbon dioxide (CO
2
) and measure end-tidal carbon dioxide
(EtCO
2
) and Airway Respiration Rate (AwRR) with the Efficia DFM100. You can use one of two
sensor types:
•Philips Mainstream
•Philips Sidestream
Overview
The carbon dioxide monitoring function of the Efficia DFM100 measures the partial pressure of
carbon dioxide in a sample of the patient’s exhaled breath. The Efficia DFM100 may be used to
monitor carbon dioxide in both intubated and non-intubated patients.
The partial pressure of carbon dioxide is derived by multiplying the measured carbon dioxide
concentration with the ambient pressure. From the partial pressure measurement, the end-tidal
carbon dioxide (EtCO
2
) is derived.
EtCO
2
is the peak CO
2
value measured during expiration. It is used to monitor the patient’s
respiratory status. The EtCO
2
measurement uses a technique based on the absorption of infrared
radiation by some gases. It indicates the change in:
• The elimination of CO
2.
•The delivery of O
2
to the lungs.
The CO
2
monitoring function of the Efficia DFM100 provides an EtCO
2
value, a CO
2
waveform
(Capnogram), and an airway respiration rate (AwRR). The AwRR relies on CO
2
functionality to
identify valid breaths for numeric display and alarm conditions such as Apnea.
CO
2
monitoring is available in AED, Monitor, Pacer and Manual Defib modes and on both adult
and infant/child patients. Use the Patient Category button to switch categories.
When pressing the Patient Category button, all parameter alarm limits change to the new patient
category. These changes are retained when you switch modes.
• For patients that are ≥ 25kg or ≥ 8 years old, use Adult patient category
• For patients <25kg or < 8 years old, use Infant/Child patient category
The neonatal patient category is not supported.