Beneficial physiological effects of positive end expiratory ...

[javeds]

Beneficial physiological effects of positive end expiratory pressure (PEEP) include which of the following?
 
  1. Increased PaO2 for given FiO2
  2. Increased lung compliance (CL)
  3. Decreased shunt fraction
  4. Increased functional residual capacity
  a. 1, 2, 3, and 4
  b. 3 and 4 only
  c. 2, 3, and 4 only
  d. 2 and 4 only

Question 2

Which of the following is a benefit of high inspiratory flows during positive-pressure ventilation?
 
  a. Improved gas exchange
  b. Higher peak pressures
  c. Reduced air trapping
  d. Higher work of breathing

[dyrone]

Answer to Question 1

ANS: A

Answer to Question 2

ANS: C
High ventilator inspiratory flow allows more time for exhalation and reduces the incidence of air trapping.