Nasal Airway Obstruction
The Septum, Lateral Wall, and Turbinates form a narrow triangular area in the front of the nose known as the Internal Nasal Valve. If any of these structures enlarge, bend or are abnormal, the nasal airway size is reduced, causing a significant reduction in airflow.
- The Septum is the narrow wall of cartilage and bone covered by soft tissue between the two nostrils and it can often bend and obstruct the nasal airway.
- The Lateral wall is the side or outer wall of the nose and it can bend inwards or collapse when weakened and restrict airflow.
- Turbinates are finger like ridges of thin bone and tissue inside the nose and can often enlarge and block the nasal passages and reduce airflow.
Narrowing of the nasal valve may be one of the most common causes of nasal obstruction. The nasal valve is also the narrowest part of the nasal airway and a small change in the size of the valve may dramatically change airflow through the nose, thereby mitigating symptoms of NOA.