What is the most reliable indicator of a change in airway ...

[Bob-Dole]

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

Question 2

Which of the following device-related factors have a major effect on pressurized metered dose inhaler (MDI) delivery of aerosolized drugs during mechanical ventilation?
 
  1. MDI propellant formula
  2. Type of spacer or adapter used
  3. Position of spacer in circuit
  4. Timing of MDI actuation
  a. 1 and 3 only
  b. 1, 2, and 3 only
  c. 3 and 4 only
  d. 2, 3, and 4 only

[firehawk60]

Answer to Question 1

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.

Answer to Question 2

ANS: D

[Bob-Dole]

Thanks for the timely response, appreciate it

[kthug]

Wow, this really help