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Author Question: A comparison of functional residual capacity measured by body plethysmography with that measured by ... (Read 83 times)

tsand2

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on: Jul 16, 2018
A comparison of functional residual capacity measured by body plethysmography with that measured by
 
  nitrogen washout reveals that the measurement obtained during the nitrogen washout test is less than that during body plethysmography. This discrepancy is most likely caused by which of the following?
  a. Poor technique c. Restrictive lung disease
  b. Severe air-trapping d. Directional valve malfunction

Question 2

The standard for repeatability for forced expiratory volume in 1 second (FEV1) is ___ mL.
 
  a. 100 c. 200
  b. 150 d. 250


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tandmlomax84

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

ANS: B
Severe air-trapping will produce lower functional residual capacity results than body plethys-mography because the nitrogen washout test measures gas volumes only in communicating air-ways.

Answer to Question 2

ANS: B
The repeatability standard for FEV1 is 150 mL.


tsand2

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Reply 2 on: Jul 16, 2018
Excellent

coreycathey

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

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