Open AccessTime irreversibility analysis of ECG based on symbolic relative entropy
Author(s) -
Wei Shen,
Jun Wang
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.118702
Subject(s) - normal sinus rhythm , fibrillation , sudden cardiac death , cardiology , symbolic dynamics , ventricular fibrillation , rhythm , kullback–leibler divergence , entropy (arrow of time) , sinus rhythm , medicine , statistical physics , mathematics , statistics , physics , atrial fibrillation , thermodynamics , pure mathematics
Time irreversibility of electric cardiac graph(ECG) signal can reflect the physiological function and the health condition of the heart. In this paper,we propos a symbolic relative entropy method (first symbolizing and then determining the time irreversibility) to analyze the three kinds of ECG signals, i.e., normal sinus rhythm, ventricular fibrillation and sudden cardiac death from the MIT-BIH database. The results show that three kinds of signals have different time irreversibilityies, and the time irreversibility range is largest for the normal sinus rhythm, the second largest for the ventricular fibrillation, and smallest for the sudden cardiac death. Variance test results indicate that the irreversibilities of the three signals are significantly different. The results show that the relative entropy method can play a positive role in heart disease detection and diagnosis.