Which of the following modes of lung expansion therapy is ...

[kamilo84]

Which of the following modes of lung expansion therapy is physiologically most normal?
 
  a. Continuous positive airway pressure
  b. Incentive spirometry
  c. Positive end expiratory pressure
  d. Intermittent positive-pressure breathing therapy

Question 2

How do all modes of lung expansion therapy aid lung expansion?
 
  a. Increasing the transpulmonary pressure gradient
  b. Decreasing the transthoracic pressure gra-dient
  c. Increasing the pressure in the pleural space
  d. Decreasing the pressure in the alveoli

[InfiniteSteez]

Answer to Question 1

ANS: B
Although all these approaches are used in lung expansion therapy, it should be clear that those methods that decrease Ppl (e.g., incentive spirometry) have more of a physiologic effect than those that raise Palv and often are most effective.

Answer to Question 2

ANS: A
All modes of lung expansion therapy increase lung volume by increasing the transpulmonary pressure (PL) gradient.

[kamilo84]

Excellent

[matt95]

Great answer, keep it coming