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Capnography (CO2)
Propaq Encore Reference Guide 75 Welch Allyn
Capnography (CO
2
)
Intended Use
The Propaq’s Capnography (CO
2
) option is intended to noninvasively measure the following
vital signs or events: End-tidal CO
2
(ETCO
2
), Inspired CO
2
(INCO
2
), Breath Rate, and Apnea.
The CO
2
option is available as Mainstream CO
2
, Sidestream CO
2
, or Dualstream
CO2
.
Although Dualstream CO
2
provides both Mainstream CO
2
and Sidestream CO
2
monitoring,
only one method can be used at a time. The v option is required for any Propaq equipped
with the CO
2
option.
CO
2
reading accuracy is affected by the presence of interfering gases and vapors. If the CO
2
option is used on patients who are being administered oxygen (O
2
) or nitrous oxide (N
2
O),
be sure to set the appropriate compensation setting using the
GAS COMP button.
Warning Before you use a Propaq on a new patient, always turn it off for a
few seconds, then turn it on again. This clears the prior patient’s trend values,
alarm limit settings, and NIBP cuff inflation target.
Avoid exposing a Propaq with the CO
2
option to non-patient sources of CO
2
such as vehicle engine exhaust or smoke. When such exposure is possible,
avoid opening the printer door. Exposure to these CO
2
sources can
temporarily trap v within the monitor or Mainstream v sensor housing, even
when monitor power is off. This can temporarily cause an erroneous elevated
CO
2
measurement baseline until the trapped CO
2
leaks out and the baseline
returns to zero (which can require as long as 3-24 hours).
Caution The Mainstream v and Sidestream
CO
2
options are not
recommended for use during magnetic resonance imaging (MRI) procedures.
The magnetic fields involved will permanently damage the CO
2
sensor.
CO
2
monitoring outside the specified operating temperature range can cause
inaccurate
CO
2
readings. The operating temperature range for the CO
2
option
is different than the range of 0° to 40° C for other Propaq Encore functions:
Mainstream
CO
2
operating temperature: 10° to 40° C
Sidestream
CO
2
operating temperature: 5° to 40° C