The pressure at which large numbers of alveoli are recruited in a patient with acute respiratory distress syndrome (ARDS) is located on the static pressure-volume curve at which of the follow-ing points?
a. Upper inflection point
b. Lower inflection point
c. Peak inspiratory pressure
d. Between the lower and upper inflection points
ANS: B
The lower inflection point marks a significant change in the slope of the curve and may indicate the pressure at which large numbers of alveoli are recruited.
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