Oxygen delivery and consumption calculations

Oxygen delivery and consumption calculations should be utilised to evaluate and optimize gas exchange:

• Oxygen Delivery: DO2 = 10 x CI x CaO2
• Oxygen Consumption: VO2 = 10 x CI x (CaO2 — CvO2)

Where:
CaO2 (arterial oxygen content) = (Hb x 1.36 x SaO2) + (0.0031 x PaO2), 
and 
CvO2 (mixed venous oxygen content) = (Hb x 1.36 x SvO2) + (0.0031 x PvO2)

CI = cardiac index
HB = hemoglobin
SaO2 = arterial oxygen saturation
PaO2 = partial pressure of oxygen in arterial blood
SvO2 = venous oxygen saturation
PvO2 = partial pressure of oxygen in venous blood