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An online sleep apnea detection method based on recurrence quantification analysis

IEEE journal of biomedical and health informatics, 2014-07, Vol.18 (4), p.1285 [Peer Reviewed Journal]

EISSN: 2168-2208 ;DOI: 10.1109/JBHI.2013.2292928 ;PMID: 25014935

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  • Title:
    An online sleep apnea detection method based on recurrence quantification analysis
  • Author: Nguyen, Hoa Dinh ; Wilkins, Brek A ; Cheng, Qi ; Benjamin, Bruce Allen
  • Subjects: Electrocardiography - methods ; Heart Rate - physiology ; Humans ; Neural Networks (Computer) ; Signal Processing, Computer-Assisted ; Sleep Apnea Syndromes - diagnosis ; Support Vector Machine
  • Is Part Of: IEEE journal of biomedical and health informatics, 2014-07, Vol.18 (4), p.1285
  • Description: This paper introduces an online sleep apnea detection method based on heart rate complexity as measured by recurrence quantification analysis (RQA) statistics of heart rate variability (HRV) data. RQA statistics can capture nonlinear dynamics of a complex cardiorespiratory system during obstructive sleep apnea. In order to obtain a more robust measurement of the nonstationarity of the cardiorespiratory system, we use different fixed amount of neighbor thresholdings for recurrence plot calculation. We integrate a feature selection algorithm based on conditional mutual information to select the most informative RQA features for classification, and hence, to speed up the real-time classification process without degrading the performance of the system. Two types of binary classifiers, i.e., support vector machine and neural network, are used to differentiate apnea from normal sleep. A soft decision fusion rule is developed to combine the results of these classifiers in order to improve the classification performance of the whole system. Experimental results show that our proposed method achieves better classification results compared with the previous recurrence analysis-based approach. We also show that our method is flexible and a strong candidate for a real efficient sleep apnea detection system.
  • Publisher: United States
  • Language: English
  • Identifier: EISSN: 2168-2208
    DOI: 10.1109/JBHI.2013.2292928
    PMID: 25014935
  • Source: MEDLINE
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