When titrating the FiO2 level downward from 100% to 40%, what is the maximum increment that should be applied between estimates of oxygenation?
a. 5%
b. 10%
c. 20%
d. 25%
ANS: C
In either case, it is suggested that O2 levels be titrated down from 100% to 50% O2 in decre-ments not to exceed 20%.
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