CareFusion AVEA - Physiologic Dead Space; Tidal Volume Ratio (VD; Vt Phy); Alveolar Dead Space (VD Alv);Oxygenation Index (OI); Waveforms and Loops; PCO2 Wave (Capnogram);Pco2; Vte Loop

140 Chapter 5: Volumetric Capnography Operator's manual
L2786 Rev. M
Physiologic Dead Space / Tidal Volume Ratio (Vd / Vt phy)
Range: 0 – 99%
Resolution: 1%
Alveolar Dead Space (Vd alv)
Range: 0 – 999 mL
Resolution: 0.1 mL or three significant digits (whichever is greater)
Oxygenation Index (OI)
Oxygenation index is a dimensionless number often used to assess the “pressure cost” of oxygenation.
OI Range: 0 – 200 (when PAO2 is entered in mmHg); OI Range: 0 – 1500 (when PAO2 is entered in kPa)
Resolution: 0.1 or three significant digits (whichever is greater)
PaO
2
/ FIO
2
Ratio (P/F)
The PAO
2
/ FIO
2
ratio is a simple assessment of gas exchange.
Range: 0 – 800 (P
AO
2
entered in mmHg) 0 – 106 (PAO
2
entered in kPa)
Resolution: 0.1 or three significant digits (whichever is greater)
Waveforms and Loops
PCO
2
wave (capnogram)
Displays the CO
2
value through the respiratory cycle as measured and reported by the CO
2
sensor at the wye.
Maximum range: 0 – 150 mmHg (0 – 20 kPa)
PCO
2
/ Vte loop
Displays the patient’s exhaled CO
2
value on the vertical axis and exhaled Vt on the horizontal axis. During the inspiratory
phase, both values will be set to zero.
Maximum range (CO
2
): 0 – 150 mmHg (0 – 20 kPa)
Maximum range (Vte): 0 – 2.5 liters