In acute respiratory distress syndrome (ARDS), alveoli and respiratory bronchioles fill with fluid as a result of which mechanism?
A)Compression on the pores of Kohn, thus preventing collateral ventilation
B)Increased capillary permeability, which causes alveoli to fill with fluid
C)Inactivation of surfactant and the impairment of type II alveolar cells
D)Increased capillary hydrostatic pressure that forces fluid into the alveoli

Question

Quizplus · Accepted Answer

Lung inflammation and injury damage the alveolar epithelium and the vascular endothelium in ARDS. Surfactant is inactivated, and its production by type II alveolar cells is impaired as alveoli and respiratory bronchioles fill with fluid or collapse. The other processes would not trigger the described response.

In Acute Respiratory Distress Syndrome (ARDS), Alveoli and Respiratory Bronchioles