Title :
Time-Varying Analysis of the Heart Rate Variability during Arousals from Sleep.
Author :
Mantaras, C. ; Mendez, M. ; Bianchi, A.M. ; Cerutti, S. ; Patruno, V. ; Montano, N.
Author_Institution :
Dept. of Electr. Eng., Univ. Autonoma Metropolitana, Iztapalapa
fDate :
6/27/1905 12:00:00 AM
Abstract :
The goal of this work was to apply a time-varying spectral approach to study the dynamic changes in heart rate variability (HRV) produced by the arousal from sleep in obese patients with and without obstructive sleep apnea (OSA). We studied 10 subjects, group I without OSA and group II with OSA diagnostic. RR intervals series was obtained from ECG records. HRV spectral indexes (HF & LF component) were computed from a time variant AR model. In general, group II has more variability than group I. Results are in agreement with literature for group I. However, group II results don´t show statistical differences. Our preliminary results are comparable to others reported. Therefore, this technique allows characterizing transitory phenomena like cardiovascular response to arousals
Keywords :
cardiovascular system; diseases; electrocardiography; medical signal processing; patient diagnosis; sleep; spectral analysis; ECG; RR interval series; arousals; cardiovascular response; heart rate variability; obese patients; obstructive sleep apnea; sleep; spectral indexes; time variant AR model; time-varying analysis; Biomedical engineering; Cardiology; Electrocardiography; Electroencephalography; Hafnium; Heart rate; Heart rate variability; Resonant frequency; Signal analysis; Sleep apnea; HRV; Obese subjects; Sleep Fragmentation; Time-varying model;
Conference_Titel :
Engineering in Medicine and Biology Society, 2005. IEEE-EMBS 2005. 27th Annual International Conference of the
Conference_Location :
Shanghai
Print_ISBN :
0-7803-8741-4
DOI :
10.1109/IEMBS.2005.1615448
