Which of the following pathophysiologic changes in the lung is not typically associated with pulmonary embolism?

a. Bronchoconstriction
b. Decreased ciliary mobility
c. Increased dead space ventilation
d. Reduced surfactant production

ANS: B
Embolic obstruction of the pulmonary artery increases the alveolar dead space, causes broncho-constriction, and decreases the production of alveolar surfactant.