International Nutrition Survey - Appendix
PaO2/FiO2 Ratio
PaO2/FiO2 Ratio Table
This table is for your convenience.
If your patient’s PaO2 or FiO2 value is not on the table, simply use this equation:
PaO2/FiO2 Ratio = PaO2
FiO2
The lowest PaO2/FiO2 Ratio is to be used in the SOFA Score CRF.
Example:
Of a patient’s 2 readings in one day:
1) PaO2 is 88 and FiO2 is 0.85, the ratio is 104.
2) PaO2 is 68 and FiO2 is 0.55, the ratio is 124.
The PF ratio of 104 is the lowest.
Final version: March 26th, 2013
Page | 45