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Author Question: Which of the following lumens found in a standard balloon floatation catheter would be used to ... (Read 76 times)

captainjonesify

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on: Jul 16, 2018
Which of the following lumens found in a standard balloon floatation catheter would be used to obtain a mixed venous blood sample?
 
  a. Balloon lumen c. Proximal lumen
  b. Distal lumen d. Thermodilution lu-men

Question 2

Which of the following statements is true concerning capillary blood gases?
 
  a. They can be drawn from an earlobe.
  b. They coincide with arterial blood gases.
  c. They can be drawn from a peripheral ar-tery.
  d. They require the performance of an Allen test.


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izzat

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

ANS: B
The balloon lumen is used to inflate the balloon; this is done during insertion of the catheter and measurement of wedge pressure. The distal lumen is positioned in a branch of the pulmonary ar-tery; it is used to measure pulmonary artery pressure, pulmonary artery occlusion pressure, and to obtain mixed venous blood sample. The proximal lumen is positioned in the right atrium and is used to measure central venous pressure. The thermodilution lumen is used to measure cardiac output.

Answer to Question 2

ANS: A
Capillary blood samples from an earlobe or the side of the heel can be substituted when arterial blood cannot be obtained, although the results may vary considerably from arterial blood gas values.


captainjonesify

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Reply #2 on: Jul 16, 2018
Thank you


izzat

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Reply #3 on: Jul 16, 2018
No problemo


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