Atelectasis and vocal fremitus

Started by Jenny_94
This forum made possible through the generous support of SDN members, donors, and sponsors. Thank you.

Jenny_94

Full Member
7+ Year Member
Advertisement - Members don't see this ad
Why does atelectasis cause decreased vocal fremitus? I mean, there is less air since the alveoli are collapsed, so i thought that the sound should increase.
 
Tactile fremitus is decreased (or absent) in atelectasis.

There is more space between the lung tissue and the chest wall, since as alveoli collapse, the lung area shrinks. Similar reasoning to a pneumothorax but on a smaller scale. Open space does not transmit sound very well.
 
Tactile fremitus is decreased (or absent) in atelectasis.

There is more space between the lung tissue and the chest wall, since as alveoli collapse, the lung area shrinks. Similar reasoning to a pneumothorax but on a smaller scale. Open space does not transmit sound very well.
Thanks a lot!!
 
Tactile fremitus is decreased (or absent) in atelectasis.

There is more space between the lung tissue and the chest wall, since as alveoli collapse, the lung area shrinks. Similar reasoning to a pneumothorax but on a smaller scale. Open space does not transmit sound very well.


why is there dullness on percussion then?

Is it not air in this space? or is it vaccum?