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Author Question: The partial pressure of alveolar oxygen (PAO2) when the atmospheric pressure is 3 atmospheric ... (Read 123 times)

kfurse

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on: Jul 16, 2018
The partial pressure of alveolar oxygen (PAO2) when the atmospheric pressure is 3 atmospheric pressure (atm), the PACO2 is 40 mm Hg, and the FIO2 is 0.80 is _____ mm Hg.
 
  a. 2280 c. 1736
  b. 1784 d. 1500

Question 2

A patient has a 0.40 air-entrainment mask on and is not tolerating it well at this time because of claustrophobia. A nasal cannula is placed on the patient. What liter flow should be set to match the appropriate FIO2?
 
  a. 2 c. 4
  b. 3 d. 5


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elyse44

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

ANS: C
PAO2 = (Pbar  PH2O) FIO2  PaCO2  0.8; Pbar = 3 atm  760 = 2280 mm Hg.
PAO2 = (2280  47)0.8  40  0.8.
PAO2 = 1786.4  50 = 1736.4 mm Hg.

Answer to Question 2

ANS: D
5 L/min  4 = 20. 20 + 20 = 0.40 FIO2.


kfurse

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

ryansturges

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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