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Published in: European Archives of Oto-Rhino-Laryngology 5/2014

01-05-2014 | Rhinology

Change in position dependency in non-responders after multilevel surgery for obstructive sleep apnea: analysis of polysomnographic parameters

Authors: Young Chan Lee, Young Gyu Eun, Seung Youp Shin, Sung Wan Kim

Published in: European Archives of Oto-Rhino-Laryngology | Issue 5/2014

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Abstract

This study was aimed to evaluate the change in positional dependency by analyzing polysomnographic data in non-responders who previously underwent multilevel surgery for obstructive sleep apnea. A total of 48 consecutive patients who had a <50 % reduction of apnea/hypopnea index (AHI) and a postoperative AHI of ≤20 after multilevel surgery were enrolled in this study. Postoperative polysomnography (PSG) was carried out at least 6 months after surgical treatment, and both pre- and postoperative PSG data were analyzed. No significant differences were found in any of the measured polysomnographic parameters before and after multilevel surgery in non-responders. In position-dependent patients, supine AHI, non-supine AHI, supine oxygen desaturation index (ODI) and non -supine ODI did not significantly improve after surgery. However, non-supine AHI and non-supine ODI in non-position-dependent patients (NPPs) improved significantly. Ten of 15 initially NPPs had position dependency after surgery, increasing the proportion of PPs from 68.8 % (33/48) to 83.3 % (40/48). These results suggest that positional therapy may be a useful adjuvant therapy in non-responders with position dependency.
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Metadata
Title
Change in position dependency in non-responders after multilevel surgery for obstructive sleep apnea: analysis of polysomnographic parameters
Authors
Young Chan Lee
Young Gyu Eun
Seung Youp Shin
Sung Wan Kim
Publication date
01-05-2014
Publisher
Springer Berlin Heidelberg
Published in
European Archives of Oto-Rhino-Laryngology / Issue 5/2014
Print ISSN: 0937-4477
Electronic ISSN: 1434-4726
DOI
https://doi.org/10.1007/s00405-013-2663-1

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