ZOLL Propaq M Rev B - Manual (Page 103)

9650-000820-01 Rev. B Propaq M Operator’s Guide 9-1
Chapter 9
Monitoring CO
2
This chapter describes how to use the Propaq M unit to monitor End Tidal Carbon Dioxide
(EtCO
2
), breath rate, and Fractional Inspired Carbon Dioxide (FiCO
2
). These options use the
same connector on the Propaq M unit and may be used interchangeably.
Overview
The Propaq M unit uses the Oridion Microstream FilterLine
®
and Smart CapnoLine
®
sidestream systems to monitor CO
2
.
The FilterLine and Smart CapnoLine sidestream systems draw small samples of gas from the
patient’s airway via a nasal/oral cannula or airway adapter, and pass these gases through a solid
state infrared sensor (located away from the patient’s airway) that measures CO
2
. The
Microstream system can be used for CO
2
measurements on intubated and non-intubated infant,
pediatric, and adult patients.
The Microstream CO
2
sensor generates infrared light, and beams it through the sampled
breathing gases and determines CO
2
concentration by measuring the amount of light absorbed
by gases.
The Propaq M unit displays EtCO
2
(the concentration of carbon dioxide detected at the end of
each exhalation) and FiCO as a numerical value in millimeters of mercury (mmHg). In
addition, the unit can display a capnogram. The capnogram is a valuable clinical tool that can
be used to assess patient airway integrity and proper endotracheal (ET) tube placement. The
unit calculates respiration rate by measuring the time interval between detected peaks of the
CO
2
waveform. The technology differentiates between waveforms caused by breathing and
those caused by cardiogenic oscillations and artifact.
The Propaq M is equipped with automatic barometric pressure compensation.