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Author Question: The erratic pattern of eddies and streams caused by the turbulent flow of high-velocity gases moving ... (Read 75 times)

LaDunn

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on: Jul 16, 2018
The erratic pattern of eddies and streams caused by the turbulent flow of high-velocity gases moving through small airways and their bifurcations is caused by which of the following?
 
  a. Pendelluft c. Taylor dispersion
  b. Gas streaming d. Molecular diffusion

Question 2

The tidal volume of a breath from a high-frequency jet ventilator depends on which of the fol-lowing factors?
 
  a. Pulsation pressure c. Frequency of the driving pressure
  b. Amount of bias flow d. Jet orifice size


gasdhashg

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

ANS: C
Taylor dispersion is the enhanced mixing of gases associated with the turbulent flow of high-velocity gases moving through small airways and their bifurcations. Taylor dispersion occurs when two gas streams meet, creating an erratic pattern of eddies and streams.

Answer to Question 2

ANS: D
The tidal volume of a breath during high-frequency jet ventilation depends on four basic factors: (1) the length of the pulsation, (2) the amplitude or driving pressure of the jet, (3) the jet orifice size, and (4) the patient's lung characteristics.


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