A patient receiving 60% oxygen from an air entrainment mask has a partial pressure of oxygen (PaO2) of 45 mm Hg
The patient is being intubated and the ventilator set up. What is the appropriate fractional in-spired oxygen (FIO2) to achieve a PaO2 of 60 mm Hg?
a. 0.65
b. 0.75
c. 0.8
d. 0.95
ANS: C
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