Document Detail

Computer-based analysis of cardiac state using entropies, recurrence plots and Poincare geometry.
MedLine Citation:
PMID:  18666006     Owner:  NLM     Status:  MEDLINE    
Heart rate variability refers to the regulation of the sinoatrial node, the natural pacemaker of the heart by the sympathetic and parasympathetic branches of the autonomic nervous system. Heart rate variability is important because it provides a window to observe the heart's ability to respond to normal regulatory impulses that affect its rhythm. A computer-based intelligent system for analysis of cardiac states is very useful in diagnostics and disease management. Parameters are extracted from the heart rate signals and analysed using computers for diagnostics. This paper describes the analysis of normal and seven types of cardiac abnormal signals using approximate entropy (ApEn), sample entropy (SampEn), recurrence plots and Poincare plot patterns. Ranges of these parameters for various cardiac abnormalities are presented with an accuracy of more than 95%. Among the two entropies, ApEn showed better performance for all the cardiac abnormalities. Typical Poincare and recurrence plots are shown for various cardiac abnormalities.
K C Chua; V Chandran; U R Acharya; C M Lim
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of medical engineering & technology     Volume:  32     ISSN:  1464-522X     ISO Abbreviation:  J Med Eng Technol     Publication Date:    2008 Jul-Aug
Date Detail:
Created Date:  2008-07-30     Completed Date:  2008-09-10     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7702125     Medline TA:  J Med Eng Technol     Country:  England    
Other Details:
Languages:  eng     Pagination:  263-72     Citation Subset:  IM    
Department of Electronics and Computer Engineering, Ngee Ann Polytechnic, Singapore.
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MeSH Terms
Arrhythmias, Cardiac / diagnosis*,  physiopathology*
Diagnosis, Computer-Assisted / methods*
Electrocardiography / methods*
Heart Rate*
Reproducibility of Results
Sensitivity and Specificity

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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