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Author Question: In which of the following types of ventilation can pleural pressure become positive during ... (Read 20 times)

shofmannx20

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on: Jul 16, 2018
In which of the following types of ventilation can pleural pressure become positive during inspi-ration? 1. Positive-pressure ventilation 2. Spontaneous ventilation 3. Negative-pressure ventilation
 
  a. 2 and 3 only
  b. 1 and 2 only
  c. 1, 2, and 3
  d. 1 only

Question 2

Which of the following occur with positive-pressure ventilation (PPV)?
 
  1. During inspiration, pleural pressure decreases.
  2. During inspiration, pressure in the alveoli increases.
  3. The pressure gradients of normal breathing are reversed.
  4. During inspiration, alveolar pressure exceeds pleural pressure.
  a. 1 and 3 only
  b. 1, 2, and 3 only
  c. 3 and 4 only
  d. 2, 3, and 4 only


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emily12345

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

ANS: D
Because alveolar pressure is greater than pleural pressure (Ppl) during PPV, positive pressure is transmitted from the alveoli to the pleural space, causing pleural pressure to increase during in-spiration.

Answer to Question 2

ANS: D
Because alveolar pressure is greater than pleural pressure (Ppl) during PPV, positive pressure is transmitted from the alveoli to the pleural space, causing pleural pressure to increase during in-spiration.


shofmannx20

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Reply 2 on: Jul 16, 2018
YES! Correct, THANKS for helping me on my review

amcvicar

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  • Posts: 341
Reply 3 on: Yesterday
:D TYSM

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