Author Question: A patient is receiving O2 through a nonrebreathing mask set at 8 L/min. You notice that the mask's ... (Read 99 times)

arivle123 · **on:** Jul 16, 2018

A patient is receiving O2 through a nonrebreathing mask set at 8 L/min. You notice that the mask's reservoir bag collapses completely before the end of each inspiration. Which of the fol-lowing actions is appropriate in this case?

a. Change to a partial rebreather.
b. Decrease the liter flow.
c. Increase the liter flow.
d. Change to a simple mask.

Question 2

Which of the following are true about air-entrainment systems?

1. Their FiO2 values are directly proportional to their total flow.
2. They can provide variable FiO2 values under some clinical conditions.
3. They always deliver O2 concentrations less than 100.
4. They yield a set FiO2 only if their flow exceeds the patient's.
a. 1 and 3 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 2, 3, and 4 only

Kimmy · **Reply #1 on:** Jul 16, 2018

Answer to Question 1

ANS: C
Table 41-6 provides guidance on troubleshooting the most common clinical problems with reser-voir masks.

Answer to Question 2

ANS: D
The more air they entrain, the higher is the total output flow, but the lower is the delivered FiO2.