Author Question: A physician orders a 70 He:30 O2 mixture to reduce the work of breathing in a patient having an ... (Read 39 times)

asmith134 · **on:** Jul 16, 2018

A physician orders a 70 He:30 O2 mixture to reduce the work of breathing in a patient having an acute asthmatic attack. Which of the following delivery systems would be appropriate in this case?

a. Adult O2 tent at 15 L/min
b. Aerosol mask at 12 L/min
c. Nasal cannula at 6 L/min
d. Nonrebreathing mask at 10 L/min

Question 2

You are giving a 80 He:20 O2 mixture to an asthmatic patient through a nonrebreathing mask with a compensated Thorpe tube O2 flowmeter set at 8 L/min. What is the actual flow being de-livered to the patient?

a. 10 L/min
b. 12 L/min
c. 14 L/min
d. 18 L/min

macagnavarro · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: D
In general, heliox should be delivered to most spontaneously breathing patients via a tight-fitting (nondisposable) nonrebreathing mask with a fully functional valved exhalation port.

Answer to Question 2

ANS: C
For example, the correction for an 80:20 helium-O2 mixture is 1.8.