NDLI: Cardiorespiratory coupling during sleep in difficult-to-control asthmatic patients

Content Provider	IEEE Xplore Digital Library
Author	Cabiddu, R. Aletti, F. Duarte Souza, V. Peres Costa, I. Stirbulov, R. Borghi Silva, A. Bianchi, A.M. de Oliveira, L.V.F. Cerutti, S. Malosa Sampaio, L.
Copyright Year	2012
Description	Author affiliation: Univ. Fed. de Sao Carlos, Sao Carlos, Brazil (Borghi Silva, A.) \|\| Hosp. Santa Casa de Misericordia de Sao Paulo, Sao Paulo, Brazil (Stirbulov, R.) \|\| Univ. Nove de Julho, São Paulo, Brazil (Duarte Souza, V.; Peres Costa, I.; de Oliveira, L.V.F.; Malosa Sampaio, L.) \|\| Dipt. di Ing. Biomed., Politec. di Milano, Milan, Italy (Cabiddu, R.; Aletti, F.; Bianchi, A.M.; Cerutti, S.)
Abstract	Heart rate variability (HRV) and respiration recorded during sleep from 8 patients suffering from difficult-to-control asthma were studied to investigate autonomic nervous system control of cardiac and respiratory activities, and of cardio-respiratory coupling during different sleep stages. In healthy subjects, HRV monitoring during sleep reveals a predominant parasympathetic drive to the heart during nonrapid eye movement (NREM) sleep and an increased sympathetic activity during rapid eye movement (REM) sleep. Spectral analysis of HRV and cross-spectral analysis of HRV and respiration signals in the analyzed difficult-to-control asthma patients showed trends in the main spectral indices, which appeared similar to variations observed in non pathologic subjects, but which were possibly affected by a reduction in the sympathetic and cardiorespiratory modulations. The ratio between the tachogram power in the low frequency (LF) band and the tachogram power in the high frequency (HF) band, a marker of the sympatho-vagal balance, increased during deep sleep stage S3 (LF/HF = 0.855 ± 0.876, mean ± s.d.), indicating a predominance of the sympathetic component, and decreased during REM sleep (LF/HF = 0.748 ± 0.716, mean ± s.d.), indicating a drift of the sympatho-vagal balance towards the vagal component. The coherence between the tachogram and the respirogram in the HF band increased during deep sleep stages S2 (coherence = 0.855 ± 0.727, mean ± s.d.) and S4 (coherence = 0.843 ± 0.724, mean ± s.d.) and decreased during REM sleep (coherence = 0.808 ± 0.719, mean ± s.d.), suggesting that a stronger cardiorespiratory coupling was reached with synchronization of sleep.
Sponsorship	IEEE Eng. Medicine Biol. Soc.
Starting Page	3652
Ending Page	3655
File Size	618523
Page Count	4
File Format	PDF
ISBN	9781424441198
ISSN	1557170X
e-ISBN	9781457717871
DOI	10.1109/EMBC.2012.6346758
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-08-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Hafnium Coherence Heart rate variability Synchronization Sleep apnea Heart beat
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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