NDLI: The Hilbert marginal spectrum analysis of short-term heart rate signal prior to spontaneous onset of ventricular tachyarrhythmia

Content Provider	IEEE Xplore Digital Library
Author	Hong-Sheng Dong Ai-Hua Zhang Xiao-Hong Hao
Copyright Year	2011
Description	Author affiliation: College of Electrical and Information Engineering, Lanzhou University of Technology Lanzhou, China (Hong-Sheng Dong; Ai-Hua Zhang; Xiao-Hong Hao)
Abstract	The ventricular tachycardia (VT) and ventricular fibrillation (VF) are major causes of triggering sudden cardiac death (SCD) and seriously damage to human life. So, there has a very important significance on prediction research of VT/VF. In this study, the 1024 RR intervals series preceding 135 VT/VF episodes from 78 patients stored by the implantable cardioverter defibrillators (ICD) were analyzed and compared to individually acquired control time series from the same patients normally intrinsic sinus rhythms. The artifacts and ectopic beats were removed by an adaptive filtering algorithm using local variance estimation. After converting RR intervals into instantaneous heart rate (IHR), The Hilbert frequency marginal spectrum of IHR signal were analyzed based on improved Hilbert-Huang transform. Then low-frequency amplitude, high frequency amplitude, very high frequency amplitude, total amplitude and the low-to-high frequency amplitude ratio were extracted from frequency marginal spectrum of IHR signal as signal feature. In comparison with normal sinus rhythm, statistic analysis shows that high frequency amplitude (p<0.001), very high frequency amplitude $(p<10^{−6})$ and total amplitude (p<0.002) of heart rate signal before the onset of VT/VF are significantly higher, but the low-to-high frequency amplitude ratio(p<0.0002)is significantly lower.
Starting Page	872
Ending Page	877
File Size	502841
Page Count	6
File Format	PDF
ISBN	9781424493517
e-ISBN	9781424493524
DOI	10.1109/BMEI.2011.6098468
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-10-15
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Correlation Resonant frequency Ventricular tachyarrhythmia Improved Hilbert-Huang transform Time frequency analysis Feature extraction Hilbert marginal spectrum Heart rate variability Instantaneous heart rate
Content Type	Text
Resource Type	Article

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