Both inspiration and expiration are active in which type of high-frequency ventilation?
a. High-frequency positive pressure ventila-tion
b. High-frequency oscillatory ventilation
c. High-frequency jet ventilation
d. High-frequency percussive ventilation
ANS: B
HFOV differs from other types of high-frequency ventilation in several ways; for example, both inspiration and expiration are active in HFOV.
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