Which of the following best describes positive expiratory pressure (PEP) therapy?
a. Expiration against a variable flow re-sistance
b. Expiration against a fixed threshold re-sistance
c. Inspiration against a variable flow re-sistance
d. Inspiration against a fixed threshold re-sistance
ANS: A
PEP therapy involves active expiration against a variable flow resistance.
Health Professions
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