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Author Question: Why is the total mechanical work of breathing difficult to assess during spontaneous breathing? ... (Read 98 times)

saliriagwu

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Why is the total mechanical work of breathing difficult to assess during spontaneous breathing?
 
  a. Most volunteer subjects cannot under-stand the procedure used.
  b. Respiratory muscle activity contributes to inflation resistance.
  c. The respiratory muscles (diaphragm, etc.) must be paralyzed.
  d. The subjects used to make the measure-ments must be unconscious.

Question 2

Which of the following formulas is used to compute the mechanical work of breathing?
 
  a. Change in pressure/flow
  b. Change in pressure  change in flow
  c. Change in pressure  change in volume
  d. Change in volume/change in pressure



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Kdiggy

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Answer to Question 1

ANS: B
The mechanical work of breathing cannot be measured easily during spontaneous breathing. This is because the respiratory muscles contribute to the resistance offered by the chest wall.

Answer to Question 2

ANS: C
The mechanical work of breathing can be calculated as the product of the pressure across the res-piratory system and the resulting change in volume.




saliriagwu

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Reply 2 on: Jul 16, 2018
:D TYSM


lindahyatt42

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Reply 3 on: Yesterday
Excellent

 

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