Which option is NOT considered an airway clearance technique in cystic fibrosis management?

• A. HFCWO
• B. Oxygen therapy
• C. Chest percussion and postural drainage
• D. PEP therapy

Answer: (B)

Airway clearance techniques are methods that loosen and move mucus out of the airways to improve ventilation. Oxygen therapy, while important for treating low blood oxygen levels, does not physically mobilize or clear mucus from the lungs. It simply improves oxygen delivery, so it isn’t considered an airway clearance technique.

The other options are ACTs because they directly help remove secretions: high-frequency chest wall compression uses a vest to create oscillations that loosen mucus; chest percussion with postural drainage uses rhythmic taps and gravity to guide secretions toward central airways for removal; and positive expiratory pressure therapy creates back pressure during exhalation to keep airways open and help mucus flow toward the mouth.