Which pleural abnormality involves a site of pleural rupture that acts as a one-way valve,permitting air to enter on inspiration but preventing its escape by closing during expiration?
A) Spontaneous pneumothorax
B) Tension pneumothorax
C) Open pneumothorax
D) Secondary pneumothorax

Question

Quizplus · Accepted Answer

In tension pneumothorax,the site of pleural rupture acts as a one-way valve,permitting air to enter on inspiration but preventing its escape by closing up during expiration.As more and more air enters the pleural space,air pressure in the pneumothorax begins to exceed barometric pressure.None of the other options result from the pathologic condition described.

Which Pleural Abnormality Involves a Site of Pleural Rupture That