An additional step of pure O2–CO2 was added for measurements involving CO2 (e.g. 99.5% O2−0.5% CO2 for the 0.5% CO2 treatments), in order to ensure that potential Hb saturation above 21% O2 was accounted for.
An additional step of pure O2–CO2 was added for measurementsinvolving CO2 (e.g. 99.5% O2−0.5% CO2 for the 0.5% CO2 treatments),in order to ensure that potential Hb saturation above 21% O2 wasaccounted for.