142 Chapter 5: Volumetric Capnography Operator's manual
L2786 Rev. M
Maneuvers
Several additional physiologic parameters (Vd/Vt phy, Vd phy, Vd alv, VA, OI and PF) may be calculated by obtaining
PaCO
2
and PAO
2
values at the same time as exhaled CO
2
and volume measurements.
1. Immediately before drawing an arterial blood sample, press the Event button and select Arterial Blood Gas.
Figure 5–8: Event Softkey
Volume and CO
2
data from the preceding period (set VCO
2
Averaging time) are stored.
WARNING!
The patient’s cardio-respiratory status should be stable before performing the capnography calculations to
ensure the most accurate results.
Note:
If you do not create an Arterial Blood Gas event, no data are stored and no calculations can be performed.
2. After analyzing the arterial sample, press the Screens button, select Maneuvers, and then select Capnometry to display
the Capnometry Maneuver screen.
This screen displays data from the last five maneuvers and includes the following:
• Capnometric data in the digital displays
• Capnogram
• Date and time of the arterial blood gas event
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