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KMID : 0900220190260010008
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2019 Volume.26 No. 1 p.8 ~ p.15
Effect of Endonasal Dilator on Nasal Airflow and Sleep Test Index on Sleep Apnea Patients
Jang Tae-Young

Kim Young-Hyo
Abstract
Background and Objectives: We aimed to evaluate effects of endonasal dilators (END) on sleep quality in patients with ob- structive sleep apnea (OSA) by improving nasal airflow.

Materials and Method: In 13 patients with OSA, changes of total nasal volume (TNV) and minimal cross-sectional area (MCA) before and after END use were evaluated. The change in peak nasal inspiratory flow (PNIF) was also measured. Subjects completed Epworth Sleepiness Scale questionnaire before and 2 weeks after END use. Finally, changes in apnea-hypopnea index (AHI), respiratory distress index (RDI), oxygen desaturation index (ODI), sleep time, sleep position and loudness of snoring (in decibels) were obtained by repetitive portable polysomnography.

Results: After END use, TNV (11.4¡¾3.1 cm3 to 19.4¡¾5.7 cm3) and MCA (0.7¡¾0.2 cm2 to 0.9¡¾0.1 cm2) increased significantly (p=0.001). PNIF also increased significantly after END (147.3¡¾39.5 to 194.6¡¾57.6 liter/min, p=0.001). Among 11 patients undergoing 2-week follow-up, 7 reported improvement in daytime sleepiness. Although AHI, RDI and ODI showed no statisti- cally significant change before and after END (p£¾0.05), the proportion of subjects sleeping in the supine position increased from 38.0 to 44.5%.

Conclusion: END may be an effective adjunctive tool for patients with OSA with the potential to improve nasal airflow and daytime sleepiness.
KEYWORD
Obstructive sleep apnea, Nasal cavity, Hypersomnolence
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