Theoretically, a nonrebreathing mask can deliver 100% oxygen, assuming that the mask fits ap-propriately on the patient's face and is the only source of gas being inhaled by the patient

However, in actual practice, the disposable nonrebreathing mask can deliver what percentage of FIO2?
a. 0.30-0.50 c. 0.60-0.80
b. 0.40-0.60 d. 0.24-0.50

ANS: C
The discrepancy between disposable nonrebreathing masks and the original Booth-by-Lovelace-Bulbulian masks is primarily related to the fact that manufacturers usually supply disposable masks with one of the exhalation valves removed.

Health Professions

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What is a common disorder characterized by a state of apprehension about real events?

A) Agoraphobia B) Anxiety C) Fear D) Phobia

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By default, the rows in a flow sheet

A) display only vital signs measurements from each of a patient's previous encounters. B) are limited to sections that have corresponding concepts or findings in the current patient encounter. C) are limited to sections that have corresponding concepts or findings in the patient's first encounter. D) display all clinical concepts or findings from each of a patient's previous encounters.

Health Professions