Which of the following manifestations typically accompanies an asthmatic attack?
A) Decreased residual volume
B) Decreased pulmonary arterial pressure
C) Prolonged inspiration
D) Hyperinflation of the lungs
Ans: D
Feedback:
During a prolonged attack, air becomes trapped behind the occluded and narrowed airways, causing hyperinflation of the lungs. This produces an increase in the residual volume of the lungs. Pulmonary arterial pressure tends to increase and expiration becomes prolonged.
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