A nasal cannula that delivers 5 L/min translates to what approximate FIO2?
a. 36% c. 40%
b. 28% d. 44%
ANS: C
The FIO2 increases approximately 4% for each liter of flow increase. If we begin with 20%, then 5 L/min ? 4 = 20. And 20 + 20% = 40%.
Health Professions
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