An individual with increased mucus production and airway inflammation will demonstrate what changes in the residual volume (RV)and FRC?
A)An increase in RV and an increase in FRC
B)An increase in RV and a decrease in FRC
C)A decrease in RV and an increase in FRC
D)A decrease in RV and a decrease in FRC
E)No change in RV or FRC

Question

Quizplus · Accepted Answer

Increased mucus production and airway inflammation can lead to air trapping and reduced airway clearance, resulting in an increase in residual volume (RV) as more air remains in the lungs after expiration. This also leads to an increase in functional residual capacity (FRC), which is the volume of air present in the lungs at the end of passive expiration, as RV is a component of FRC.

An Individual with Increased Mucus Production and Airway Inflammation Will