Use this calculator to determine the A-a gradient.
Input the current FiO2 (0.21 – 1.0) and the measured pCO2 and paO2
Calculator Algorithm:
AaDO2 = (713 x FiO2) – (pCO2 / 0.8) – (paO2).
| Contact this calculator's developers | Last Modified 17 July 2012 |