Chapter 11, Problem 13P

20. At end-expiration, is A. 0 mm Hg. B. 2 mm Hg. C. 4 mm Hg. D. 6 mm Hg.

If the radius of a bronchial airway, which has a driving pressure of 2 mm Hg, is reduced by 16 percent of its original size, what will be the new driving pressure required to maintain the same gas flow through the bronchial airway? A. 4 mm Hg B. 8 mm Hg C. 12 mm Hg D. 16 mm Hg