NDLI: Variability of snore parameters in time and frequency domains in snoring subjects with and without Obstructive Sleep Apnea

Content Provider	IEEE Xplore Digital Library
Author	Sola-Soler, J. Jane, R. Fiz, J.A. Morera, J.
Copyright Year	2005
Description	Author affiliation: Dept. ESAII, Univ. Politecnica de Catalunya, Barcelona (Sola-Soler, J.; Jane, R.)
Abstract	Several studies have shown differences in spectral parameters between simple snorers and patients with obstructive sleep apnea syndrome (OSAS). Most of them analyzed a reduced number of snores and/or only post-apneic snores were selected in OSAS patients. Previous findings suggest that snore parameters have a greater variability as the severity of OSAS increases. In this work we propose to analyze the snoring variability through the magnitude of the first difference of snore parameters. The technique is applied to long time sound recordings from 9 simple snorers (15795 snores) and 15 OSAS patients (19263 snores). The snores are characterized by their sound intensity an by a set of spectral parameters The variability of snore parameters is well correlated to OSAS severity (r>0.7) and is significantly greater in OSAS patients than in simple snorers (p<0.005). The results are similar when post-apneic snores are excluded from the analysis. Snoring subjects are classified with a logistic regression model, which is validated with the live-one-out method. The model is adjusted to correctly classify 100% of OSAS patients for screening purposes previously to enroll for a whole polysomnographic study
Starting Page	2583
Ending Page	2586
File Size	256516
Page Count	4
File Format	PDF
ISBN	0780387414
DOI	10.1109/IEMBS.2005.1616997
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-01-17
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Sleep apnea Intelligent networks Frequency domain analysis Piezoelectric materials Acoustic materials Sensor phenomena and characterization Acoustic sensors Sampling methods Frequency conversion Detectors PSD parameters OSAS Snoring Apnea
Content Type	Text
Resource Type	Article

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