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Detection of Obstructive Sleep Apnea Using Heart Rate Variability  

Choi Ho-Seon (Dept. of Medical Information System, Daewon Science College)
Cho Sung-Pil (Dept. of Biomedical Engineering, College of Health Science, Yonsei University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SC / v.42, no.3, 2005 , pp. 47-52 More about this Journal
Abstract
Obstructive Sleep Apnea (OSA) is a representative symptom of sleep disorder caused by the obstruction of upper airway. Because OSA causes not only excessive daytime sleepiness and fatigue, hypertension and arrhythmia but also cardiac arrest and sudden death during sleep in the severe case, it is very important to detect the occurrence and the frequency of OSA. OSA is usually diagnosed through the laboratory-based Polysomnography (PSG) which is uncomfortable and expensive. Therefore researches to improve the disadvantages of PSG are needed and studies for the detection of OSA using only one or two parameters are being made as alternatives to PSG. In this paper, we developed an algorithm for the detection of OSA based on Heart Rate Variability (HRV). The proposed method is applied to the ECG data sets provided from PhysioNet which consist of learning set and training set. We extracted features for the detection of OSA such as average and standard deviation of 1 minute R-R interval, power spectrum of R-R interval and S-peak amplitude from data sets. These features are applied to the input of neural network. As a result, we obtained sensitivity of $89.66\%$ and specificity of $95.25\%$. It shows that the features suggested in this study are useful to detect OSA.
Keywords
Obstructive sleep apnea; heart rate variability; R-R interval; S-peak amplitude; neural network;
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