A physician orders a 70% He/30% O2 mixture to be delivered to a patient having an acute asthmatic attack. Which of the following systems would be most appropriate to deliver this mixture?
A. nebulizer set at 100% oxygen with aerosol mask
B. tight-fitting nonrebreathing mask with competent valving
C. simple oxygen mask set to deliver 15 L/min oxygen
D. tight-fitting partial rebreathing mask at 12 L/min
Ans: B. tight-fitting nonrebreathing mask with competent valving
Health Professions
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