User's Manual

Calculations
25-13
Oxygenation Calculations
Oxygenation calculations provide specific data describing the efficiency with
which the body acquires, circulates, and utilizes oxygen in the cardiopulmonary
system. Input values for Oxygenation calculations are automatically obtained from
SpO
2
, SvO
2
, cardiac output modules, or Flexport interfaces. You must manually
enter inputs for laboratory blood analysis values.
Table 6: Respiration Output
Label Name Units
VMIN Minute Volume l/min
Cst Static Compliance ml/cmH
2
O
Cdyn Dynamic Compliance ml/cmH
2
O
VD Dead Space Volume ml
VD/VT Dead Space to Tidal Volume Ratio Ratio
VA Alveolar Ventilation ml/min
Table 7: Respiration Equations
VMIN = VT x RR/1000
Cst = VT/(PLT-PEEP)
Cdyn = VT/(PIP-PEEP)
VD = (PaCO
2
- PECO
2
) x (VT/PaCO
2
)
VD/VT = VD/VT
VA = (VT - VD) x RR
Table 8: Oxygenation Input
Label Name Units
Default
Value
Valid
Range
Fi0
2
Fractional Inspired Oxygen % 50 0 - 100
PaO
2
Partial Pressure of Arterial Oxygen
mmHg
kPa
100
13.3
0 - 500
0 - 70.0
SpO
2
Arterial Oxygen Saturation % 97 0 - 100
PaCO
2
Partial Pressure of Arterial Carbon
Dioxide
mmHg
kPa
40
5.3
0 - 150
0 - 20.0
Pv
O
2
Partial Pressure of Mixed Venous
Oxygen
mmHg
kPa
38
5.1
0 - 99
0 - 15.0
Sv
O
2
Mixed Venous Oxygen Saturation % 75 0 - 99
To view current oxygenation
calcs:
1 Touch CALCS.
2 Touch OXY CALCS.