People with emphysema have an increased work of breathing (WOB) as a result of their high expiratory Ra_w.In order to keep their airways open during exhalation, they perform which of the following maneuvers?

Question

Quizplus · Accepted Answer

To keep their airways open during exhalation, they tend to purse the lips or partially close the vocal cords. This action increases pressure in the airways during exhalation, counteracting the outside collapsing force (pleural pressure) on the airway walls.

People with Emphysema Have an Increased Work of Breathing (WOB)