Worsening lung compliance during volume-controlled ventilation would cause which of the fol-lowing?
a. A decrease in peak pressure c. A decrease in vol-ume delivery
b. An increase in peak pressure d. An increase in peak flow rate
ANS: B
During volume-controlled ventilation, the peak inspiratory pressure generated by the delivery of the volume varies according to the characteristics of the lungs. Worsening lung compliance is in-dicative of stiffening lungs. This would cause more pressure to be generated during the delivery of a set volume.
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