Nasal obstruction and sleep-disordered breathing: a study using acoustic rhinometry.

Area of Science:

• Otolaryngology
• Sleep Medicine
• Pulmonology

Background:

• The link between nasal airway function and sleep-disordered breathing (SDB) requires further clarification.
• Nasal obstruction may influence SDB in some individuals, but not all.
• A validated method is needed to stratify SDB patients based on nasal airway involvement.

Purpose of the Study:

• To investigate the correlation between objective nasal airway measurements and SDB severity.
• To determine if acoustic rhinometry (AR) can predict the need for nasal continuous positive airway pressure (nCPAP) titration.
• To explore the role of nasal obstruction in SDB, considering body mass index (BMI).

Main Methods:

• Acoustic rhinometry (AR) was used to measure nasal airway dimensions in 44 patients.
• Patients underwent polysomnography and nCPAP titration.
• Pearson correlation and multiple linear regression analyses were performed, stratified by BMI.

Main Results:

• Perceived nasal obstruction correlated significantly with AR-measured anatomic obstruction (r = 0.45, p < 0.01).
• In non-overweight patients (BMI < 25), AR measurements showed significant correlations with nCPAP titration pressure (r = 0.85, p < 0.01) and respiratory distress index (r = 0.67, p = 0.03).

Conclusions:

• Nasal airway function is a key factor in SDB for certain patients, especially those who are not overweight.
• Non-overweight individuals with nasal obstruction may be the primary candidates for successful SDB surgical interventions.
• AR, combined with nasal examination, can aid in evaluating and managing SDB patients.