What is the most reliable indicator of a change in airway resistance due to bronchodilator admin-istration during mechanical ventilation?
a. Change in slope of the expiratory flow-volume curve
b. Difference between peak airway and plateau pressures
c. Change in peak expiratory flow during passive exhalation
d. Difference between plateau and baseline (PEEP) pressures
ANS: B
A change in the differences between peak and plateau pressures (the most reliable indicator of a change in airway resistance during continuous mechanical ventilation) can be measured.
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