The therapy that mobilizes retained secretions by using devices similar to, but less cumbersome than, continuous positive airway pressure is known as which of the following?

a. Expiratory positive airway pressure
b. Intermittent positive-pressure breathing
c. Intrapulmonary percussive ventilation
d. Positive expiratory pressure

ANS: D
The rationale for the use of positive expiratory pressure therapy is similar to that for the use of continuous positive airway pressure, except that positive expiratory pressure seems to be less cumbersome and more manageable for patients. Expiratory positive airway pressure and intrap-ulmonary percussive ventilation are just as cumbersome as continuous positive airway pressure. Intermittent positive-pressure breathing is lung expansion therapy, not bronchial hygiene therapy.