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Author Question: The capnogram in the figure is indicative of which of the following conditions? a. Chronic ... (Read 77 times)

NClaborn

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on: Jul 16, 2018
The capnogram in the figure is indicative of which of the following conditions?
 
  a. Chronic obstructive pulmonary disease (COPD)
  b. Cardiac arrest
  c. Hyperventilation
  d. Pulmonary embolism

Question 2

The normal range for arterial-to-end-tidal partial pressure of carbon dioxide P(a-et)CO2 is which of the following?
 
  a. 2-4 mm Hg
  b. 4-6 mm Hg
  c. 6 -8 mm Hg
  d. 8-10 mm Hg


Bigfoot1984

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

ANS: A
Phase 3 becomes indistinguishable when physiological dead space increases, as in chronic ob-structive pulmonary disease (COPD), and causes the capnogram to appear as it does in the figure. A cardiac arrest would lower the graph line to zero. Hyperventilation will decrease the alveolar plateau, but its shape would remain the same as a normal capnogram. A pulmonary embolism would also cause a drop in the alveolar plateau.

Answer to Question 2

ANS: B
The arterial-to-end-tidal partial pressure of carbon dioxide P(a-et)CO2 for tidal breathing should be approximately 4-6 mm Hg.


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NClaborn

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Reply #2 on: Jul 16, 2018
Thank you :)


Bigfoot1984

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Reply #3 on: Jul 16, 2018
Happy to help you


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