For a given transpulmonary pressure gradient and inflation time, which of the following lung units would exhibit the greatest change in volume?
a. A unit with high resistance and low com-pliance
b. A unit with high resistance and normal compliance
c. A unit with normal resistance and low compliance
d. A unit with normal resistance and normal compliance
ANS: D
The ventilation going to lung units with either long or short time constants is less than that re-ceived by units with normal compliance and resistance.
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