Worsening lung compliance during pressure-controlled ventilation ...

[vinney12]

Worsening lung compliance during pressure-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

Question 2

Improving lung compliance during volume-controlled ventilation would cause a(n) _____ in peak _____.
 
  a. decease; pressure c. decrease; flow rate
  b. increase; pressure d. increase; flow rate

[AngeliqueG]

Answer to Question 1

ANS: C
During pressure-controlled ventilation, the delivery of the volume varies according to the charac-teristics of the lungs. Worsening lung compliance is indicative of stiffening lungs. This would cause less volume to be delivered with the same set pressure.

Answer to Question 2

ANS: A
During volume-controlled ventilation, the peak inspiratory pressure generated by the delivery of the volume varies according to the characteristics of the lungs. Improving compliance makes it easier to deliver a volume, decreasing the pressure generated in the lungs.