If a Venturi mask is set at 28% and the liter flow is set above the set liter flow prescribed on the device, what FIO2 is being delivered?
a. 28%
b. 32%
c. 100%
d. 80%
ANS: A
The flow of oxygen to the nozzle is constant, so an obstruction will increase the FIO2 but not the flow.
Health Professions
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