Humidification is important for patients on oxygen therapy to prevent which issue?

• A. Prevent drying of mucous membranes and help loosen secretions
• B. Increase oxygen concentration delivered
• C. Improve taste of oxygen
• D. Decrease airway reflexes

Answer: (A)

Humidification is used with oxygen therapy to keep the airway moist. Breathing dry oxygen can dry out the mucous membranes in the nose and throat, making mucus thick and hard to clear. Adding water vapor to the gas helps keep these surfaces moist, which supports the mucociliary clearance system and makes secretions easier to loosen and expectorate. This reduces irritation, crusting, and the risk of mucus plugging, contributing to better comfort and easier airway clearance.

Humidification does not change how much oxygen is delivered—the concentration of oxygen remains what’s prescribed. It also doesn’t improve taste or directly alter airway reflexes; its main role is maintaining moisture to protect the mucosa and aid secretion management.