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Author Question: A 45-year-old patient with congestive heart failure is receiving O2 through a 35 air-entrainment ... (Read 30 times)

jenna1

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on: Jul 16, 2018
A 45-year-old patient with congestive heart failure is receiving O2 through a 35 air-entrainment mask. With an O2 input of 6 L/min, what is the total output gas flow?
 
  a. 16 L/min
  b. 24 L/min
  c. 28 L/min
  d. 36 L/min

Question 2

You note that the air intake ports surrounding the jet of a 35 air-entrainment mask are partially obstructed by the patient's bedding. Which of the following would you expect?
 
  1. Decrease in the device's total output flow
  2. Increase in the percent O2 delivered by the device
  3. Change in the FiO2 received by the patient
  a. 1 and 2 only
  b. 2 and 3 only
  c. 1 and 3 only
  d. 1, 2, and 3


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chinwesucks

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: D
Table 41-7 lists the approximate air-to-O2 ratios for several common O2 percentages.

Answer to Question 2

ANS: A
In the presence of flow resistance distal to the jet, the volume of air entrained always decreases. With less air being entrained, total flow output decreases, and the delivered O2 concentration in-creases.


jenna1

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Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

dawsa925

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Reply 3 on: Yesterday
Gracias!

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