What is the function of the counterweight plug and magnet in the Acapella Flutter type of de-vice?
a. Creates positive and negative pressure in the chest
b. Provides high-frequency external chest wall oscillations
c. Creates oscillations that are transmitted into the lungs
d. Creates positive pressure throughout the respiratory cycle
ANS: C
Acapella is a flutter type of valve that creates a series of high-frequency oscillations that are transmitted into the lungs through the airway opening.
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