The Oxygenation Index (OI) is a measure of oxygenation in relation to respiratory support.
oxygenation index =
= (mean airway pressure in cm H2O) * (FIO2 from 0.21 to 1.0) / (PaO2 in mm Hg)
One variation is to express the oxygenation index as above, multiplied by 100.
Interpretation:
• The higher the oxygenation index, the more severe the oxygenation deficit.
