Efforts Aimed at Mucus Clearance by Creating a Differential Airflow

question 20

Multiple Choice

Efforts aimed at mucus clearance by creating a differential airflow rate led to the development of:

• A) low-frequency chest wall moderated system.
• B) low-frequency chest wall oscillation system.
• C) high-frequency chest wall moderated system.
• D) high-frequency chest wall oscillation system.

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