Monitoring Co 2 , Respiration Rate , And The Etco; (Model 623Xx) - Welch Allyn Atlas Operator's Manual

2.6 Monitoring CO

(Model 623xx)

The lower trace displays the ETCO
or SpO in its place if desired. The CO
2
Respiration Rate appears on the left. You can set alarm limits for both of these measurements.
What is displayed – In the Atlas Monitor model
623xx, one of the lower trace alternatives to the
cascading ECG includes the CO
Respiration Rate is displayed above the left end
of this trace. Carbon Dioxide concentration is
displayed above the right end of the trace. CO
can be displayed in units of %, mmHg, or kPa.
There are high and low alarm levels for
Respiration Rate and for CO
Note: the watertrap must be installed for the CO
displays to be active. If the watertrap is not
installed, the Atlas Monitor will display
cascading ECG.
Warning: End tidal carbon dioxide (ETCO
and breath rate measurement and alarm
capability are active ONLY when the second
trace option is set to CO
operator change from viewing the ETCO
and breath rate waveforms and data to
another second trace selection (SpO
Respiration or ECG) the CO
rate monitoring and alarm capability will be
disabled. This occurs even if the watertrap
and cannula are still inserted into the
Monitor.
How it works - The CO
single beam, single frequency Infra-Red (IR)
source and a dual thermopile detector. CO
measurement is based on the IR absorption
characteristics of CO
2
sensor uses non-dispersive IR spectroscopy to
measure the number of CO
the sample gas. CO gas has a unique absorption
2
band which is related to a CO
composition and mass. CO
, Respiration Rate, and the ETCO
2
waveform, although you can display Impedance Respiration, ECG,
2
measurement is shown above the right end of the trace, and
2
waveform. The
2
concentration.
2
)
2
. Should the
2
2
,
2
and breath
2
sensor is based on a
2
2
molecules. The CO
2
molecules present in
2
molecule's
2
gas concentration is
2
measured by detecting absorption in this band.
The IR absorption in the CO
may be affected by a number of factors that
skew the CO
automatically compensates for some of these
factors. Water vapor compensation accounts for
2
the effect that water vapor has on the IR
absorption characteristics of CO
During normal sidestream operation, CO
measurements are adjusted mathematically to
compensate for this effect.
2
Alarms - When any of the CO
Rate limits are exceeded, an audible alarm
sounds and the affected measurement flashes. If
the Print On Alarm configuration is set to Yes,
this alarm will trigger an automatic print. You
can silence the CO
pressing the large blue
right side of the instrument. This will silence all
alarms for 60, 90, or 120 seconds, depending on
the setting selected in Advanced Configuration.
However, any measurement still outside the set
limits will flash. When alarms are silenced, they
do not trigger a Print On Alarm.
To suspend both the CO
alarms, press the
button so the red LED in the button lights. A
suspended alarm will still flash if it goes outside
the range of the limits, but it will not sound the
audible alarm. When an alarm is suspended, it
will not trigger a Print On Alarm.
Note: The CO
be suspended for only 3 minutes when the
language setting is configured to "Francais".
If the language is set to any other language,
pressing the
will suspend the alarm indefinitely.
23
Waveform
2
wavelength band
2
measurement. The Atlas Monitor
2
molecules.
2
or Respiration
2
alarm, and all alarms, by
2
button at the
Silence
and Respiration Rate
2
CO /RESP ALARMS Off
2
and Respiration Rate alarms can
2
CO /RESP ALARMS Off
2
2
button