Dräger Infinity M540 Instructions For Use Manual page 190

Calculations
The Cockpit uses the values in the preceding table, the laboratory values, and the BSA value to calculate
the following derived oxygenation and ventilation parameter values.
Label Description
C(a-v)O2 Arteriovenous oxygen dif-
ference
CaO2 Arterial oxygen content
Cdyn Dynamic compliance
Cs Static lung compliance
CvO2 Venous oxygen content
DO2 Oxygen delivery
DO2I Oxygen index
MValv Alveolar minute volume
MVe Expired minute volume
MV/C.O. Ventilation cardiac output
ratio
O2ER Oxygen extraction ratio
P(A-a)O2 Alveolar-arterial oxygen
difference
Qs/Qt Intrapulmonary right-left
shunt (percentage shunt)
TVd phy Tidal volume dead space
(physiological)
TVd/TV phy Ratio of tidal volume dead
space to tidal volume dead
space (physiological)
VO2 Oxygen consumption
VO2I Oxygen consumption in-
dex
NOTE: When multiple sources are available, the RR order of priority is RR, RRc, RRi.
190
Derivation
CaO2 – CvO2
0.0134 x Hgb x SaO2
VTe / (PIP – PEEP)
VTe / (Pplat – PEEP) or
VTe / (Pplat – PEEP)
0.0134 x Hgb x SvO2
10 x CaO2 x C.O.
10 x CaO2 x CI
DO2 / BSA
(VTe – TVd phy) x RR
(VTe x RR) / 1000
MValv / C.O.
(CaO2 – CvO2) / CaO2
iO2 x (Pb –47) – PaCO2 – PaO2
iO2 / 100 x (Pb-47) – PaCO2 – PaO2
Hgb 1.34
------------------------------------------------------------------------------------------------ -
VTe x (1 – PeCO2 / PaCO2)
TVd phy / VTe
10 x C(a-v)O2 x C.O.
10 x C(a-v)O2 x CI
VO2 / BSA
Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
× ×
+ 0.0031 PAaO2 CaO2
× ×
Hgb 1.34 + 0.0031 PaO2 CvO2
Available
units
mL/dL
mL/dL
mL/cmH
mL/cmH
mL/dL
mL/min
mL/min/m
mL/min
L/min
No units
No units
mmHg
%
–
×
100
–
mL
No units
mL/min
mL/min/m
2
2
2
2