E-4 624074/07
ECO
2
sensor option: Volumetric Capnography
Figure E-2. Typical spirogram of a patient on pressure-
controlled ventilation (same breath as shown in
Figure E-1)
1
Figure E-3. Combination of capnogram and spirogram
(that is, fractional end-tidal CO
2
concentration plotted
against volume)
2
1. The flow into the patient (inspiration) is negative, while the flow out of the
patient (exhalation) is positive. The expiratory flow curve is an exponential
decay curve. Notice that in spontaneously breathing subjects, the flow
curves may be of different shapes.
To Next Page
Loading...