What Will Typically Happen to the End-Expiratory Lung Volume During

Question

What will typically happen to the end-expiratory lung volume during exercise in subjects with COPD?
A) Remain the same
B) Decrease
C) Increase
D) Initially increase and then decrease

Accepted Answer

In subjects with COPD, end-expiratory lung volume typically increases during exercise. This is due to air trapping and the inability to fully exhale before the next breath begins, leading to a phenomenon known as dynamic hyperinflation.