Nasal Airflow Resistance

Mechanical dilation may imitate some subjective openness from decongestants without drug-induced mucosal shrinkage, but it is not claimed to treat all congestion. Nasal dilation mechanically widens the nasal airway to reduce resistance to airflow. Structural narrowing, deviation, congestion, or asymmetry can reduce nasal airflow. Increased airflow at the front of the nose is argued to encourage surrounding nasal tissue to retract or open further. Reduced nasal airflow can encourage mouth breathing, noisier breathing, or snoring during sleep.