What is the purpose of airway clearance techniques in COPD?

• A. To loosen mucus and facilitate its removal through effective coughing
• B. To improve lung compliance
• C. To desensitize cough reflex
• D. To increase sputum production

Answer: (C)

The main idea behind airway clearance techniques in COPD is to loosen thick mucus and make it easier to remove from the airways by coughing. When secretions are thick and difficult to clear, these techniques help mobilize them so coughing, huffing, or suction can effectively expel them, which improves airway patency, ventilation, and reduces the risk of infection from mucus plugging. The goal is not to desensitize the cough reflex or to increase mucus production; cough remains a key mechanism for clearing airways, and airway clearance aims to enhance its effectiveness rather than suppress or simply raise mucus output. These techniques don’t primarily change lung compliance; they focus on improving secretion clearance to improve breathing comfort and gas exchange.