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Author Question: Which of the following lung units would empty and fill most slowly? a. A unit with high ... (Read 49 times)

deesands

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on: Jul 16, 2018
Which of the following lung units would empty and fill most slowly?
 
  a. A unit with high resistance and high com-pliance
  b. A unit with high resistance and low com-pliance
  c. A unit with low resistance and high com-pliance
  d. A unit with low resistance and low com-pliance

Question 2

Which of the following formulas are used to compute the time constant of a lung unit?
 
  a. Change in pressure  flow
  b. Compliance/resistance
  c. Resistance/elastance
  d. Resistance  compliance


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Missbam101

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

ANS: A
Lung units have a short time constant when resistance or compliance is low. Lung units with short time constants fill and empty more rapidly than those with normal compliance and re-sistance. The inverse also holds true. Those units with a high resistance and compliance will fill and empty the most slowly.

Answer to Question 2

ANS: D
The time constant is simply the product of each unit's compliance and resistance.


deesands

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Reply 2 on: Jul 16, 2018
Thanks for the timely response, appreciate it

tuate

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Reply 3 on: Yesterday
Excellent

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