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Two subtypes of positional obstructive sleep apnea: Supine-predominant and supine-isolated

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Affiliated Author(s)
조용원김동은황상희김근태
Alternative Author(s)
Cho, Yong WonKim, Dong EunHwang, Sang HeeKim, Keun Tae
Journal Title
Clinical Neurophysiology
ISSN
1388-2457
Issued Date
2016
Keyword
Obstructive sleep apneaPositional obstructive sleep apneaSupine OSAOSA classification
Abstract
Objectives: The body position has a strong influence on obstructive sleep apnea (OSA). The purpose of this
study is to compare the clinical features of two subtypes of positional OSA (POSA), namely
supine-predominant OSA (spOSA) and supine-isolated OSA (siOSA), so as to discuss whether the two
groups can be classified separately.
Methods: A total of 279 consecutive patients with OSA were enrolled. The POSA was defined as having an
overall apnea-hypopnea index (AHI) P5 with supine AHI >2 times the non-supine AHI. Only those with
P30 min spent in the supine and non-supine sleeping positions were included, and split night studies
were excluded from the study. Patients were considered spOSA unless their non-supine AHI was negligible
(<5) (siOSA). The clinical and polysomnographic characteristics of both groups were compared.
Results: Two hundred and sixteen subjects (77.4%) met the criteria for POSA, with 158 (73.1%) of them
classified as spOSA, and 58 (26.9%) as siOSA. The siOSA patients had lower arousal indices, but poorer
quality of sleep, and were more depressed and anxious compared with the spOSA subjects.
Conclusions: Those with siOSA and spOSA show different clinical features.
Significance: These findings suggest that a more detailed sub-classification of POSA is needed.
Department
Dept. of Neurology (신경과학)
Dept. of Otorhinolaryngology (이비인후과학)
Dept. of Dentistry (치과학)
Publisher
School of Medicine
Citation
Keun Tae Kim et al. (2016). Two subtypes of positional obstructive sleep apnea: Supine-predominant and supine-isolated. Clinical Neurophysiology, 127(1), 565–570. doi: 10.1016/j.clinph.2015.06.009
Type
Article
ISSN
1388-2457
DOI
10.1016/j.clinph.2015.06.009
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/33320
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Dentistry (치과학)
1. School of Medicine (의과대학) > Dept. of Neurology (신경과학)
1. School of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학)
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