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

Keun Tae KimYong Won ChoDong Eun KimSang Hee HwangMei Ling SongGholam K. Motamedi
Dept. of Neurology (신경과학); Dept. of Otorhinolaryngology (이비인후과학); Dept. of Dentistry (치과학)
Issue Date
Clinical Neurophysiology, Vol.127(1) : 565-570, 2016
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.
Obstructive sleep apneaPositional obstructive sleep apneaSupine OSAOSA classification
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1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Dentistry (치과학)
1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Neurology (신경과학)
1. Journal Papers (연구논문) > 1. School of Medicine (의과대학) > Dept. of Otorhinolaryngology (이비인후과학)
Keimyung Author(s)
조용원; 김동은; 황상희; 김근태
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