Which of the following are true of postural drainage?
1. It is most effective in disorders causing excessive sputum.
2. It is most effective in head-down positions greater than 25 degrees.
3. It requires adequate systemic hydration to be effective.
4. It improves mucociliary clearance in normal subjects.
a. 2 and 4 only
b. 1, 2, and 3 only
c. 3 and 4 only
d. 1, 2, and 4 only
Question 2
Which of the following are considered airway clearance therapies? 1. Postural drainage and percussion 2. Incentive spirometry 3. Positive airway pressure 4. Percussion, vibration, and oscillation
a. 1 and 3 only
b. 1, 2, and 3 only
c. 2, 3, and 4 only
d. 2 and 4 only