Nasopharyngeal stenosis causes chronic breathing difficulty in affected dogs. Balloon dilation or surgery restores nasal airflow and significantly improves welfare.
Nasopharyngeal stenosis represents a chronic respiratory welfare problem that significantly reduces quality of life. Dogs with significant stenosis struggle to breathe adequately during normal activities and exercise, creating persistent respiratory effort and oxygen delivery compromise. The chronic respiratory distress — visible as noisy breathing, open-mouth panting at rest, and exercise avoidance — represents ongoing suffering that is often normalized by owners as typical breed behavior.
Sleep quality is particularly affected. Dogs with stenosis cannot breathe adequately when lying down, causing sleep fragmentation and chronic sleep deprivation. This welfare harm affects daily behavior, alertness, and general wellbeing in ways that are difficult to quantify but clearly impact quality of life.
Balloon dilation — passing a deflated balloon catheter through the stenosis and inflating it — can immediately improve airway diameter and breathing. Welfare improvement post-dilation is typically dramatic and immediate. Surgical correction provides more durable results in suitable cases. Combined with other BOAS surgical interventions where needed, treatment of nasopharyngeal stenosis significantly improves long-term breathing welfare.