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10-6
XPREZZON
AND QUBE
O
PERATIONS MANUAL
C ALCULATIONS
Oxygenation Calculations
Oxygenation calculations provide specific data describing the efficiency with which
the body acquires, circulates, and uses oxygen in the cardiopulmonary system.
Input Values for Oxygenation Calculations
The following table shows the input values that are available for oxygenation
calculations.
Pulmonary Vascular Resistance
Index (PVRI)
79.9 × [(MPA – PCWP)/CI] (dynes × sec/cm
5
) ×
m
2
36 to 235
79.9 × [(MPA – PCWP)]/[CO/BSA]
79.9 × [(MPA – PCWP)]/[CO × 1/BSA]
79.9 × [(MPA – PCWP)/CO] × BSA
PVR × BSA
Left Ventricular Stroke Work
(LVSW)
0.0136 × SV × (MPA – PCWP) g × min/beat
Left Ventricular Stroke Work
Index (LVSWI)
LVSW/BSA g × min/beat/m
2
45 to 75
Right Ventricular Stroke Work
(RVSW)
0.0136 × SV × (MAP – CVP) g × min/beat
Right Ventricular Stroke Work
Index (RVSWI)
RVSW/BSA g × min/beat/m
2
4 to 8
Variable (Label) Equations Units Normal Range
Label Name Units Default Value Valid Range
FiO
2
Fractional Inspired Oxygen % 50 0 to 100
PaO
2
Partial Pressure of Arterial Oxygen mmHg 100 0 to 500
kPa 13.3 0 to 70
SaO
2
Arterial Oxygen Saturation % 97 0 to 100
PaCO
2
Partial Pressure of Arterial Carbon Dioxide mmHg 40 0 to 150
kPa 5.3 0 to 20
PvO
2
Partial Pressure of Mixed Venous Oxygen mmHg 38 0 to 99
kPa 5.1 0 to 15
SvO
2
Mixed Venous Oxygen Saturation % 75 0 to 99
Hgb Hemoglobin g/dl 15 0 to 50
PB Barometric Pressure mmHg 760 0 to 1000
kPa 101.3 0 to 130
CO Cardiac Output L/min N/A 0 to 40
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