lung expansion

Question 1

Gas absorption atelectasis can occur due to which of the following?
a) Complete interruption of ventilation to a section of the lung
b) Significant shift in ventilation/perfusion
c) Both a and b
d) None of the above

Answer 1

c) Both a and b

Question 2

Compression atelectasis primarily occurs due to which of the following mechanisms?
a) Increase in the transalveolar pressure
b) Decrease in the transalveolar pressure
c) Increase in the pressure gradient between the transthoracic pressure and the transalveolar pressure
d) Decrease in the pressure gradient between the transthoracic pressure and the transalveolar pressure

Answer 2

c) Increase in the pressure gradient between the transthoracic pressure and the transalveolar pressure

Question 3

What are some similarities and differences between lobar atelectasis and segmental atelectasis?

Answer 3

Lobar atelectasis and segmental atelectasis both involve the collapse of a section of the lung, but lobar atelectasis is caused by the compromise of a larger airway or bronchus, while segmental atelectasis occurs in a specific segment of the lung.