Symbolic dynamics for arrhythmia identification from heart variability of rats with cardiac failures
作者:
C. Letellier,
E. Roulin,
S. Loriot,
J.‐P. Morin,
F. Dionnet,
期刊:
AIP Conference Proceedings
(AIP Available online 1904)
卷期:
Volume 742,
issue 1
页码: 307-312
ISSN:0094-243X
年代: 1904
DOI:10.1063/1.1846491
出版商: AIP
数据来源: AIP
摘要:
Heart rate variability of rats is investigated using concepts from the nonlinear dynamical system theory. Among the important techniques offered, symbolic dynamics is very appealing by its power to investigate patterns which can be repeated in a time series. The present analysis was performed in six control rats and six chronic cardiac insufficient rats (myocardial infarction due to left descendent coronary artery ligation). Rats are left in clean atmosphere or exposed to atmosphere containing diluted engine emission pollutants. The evolution of the heart rate variability is then investigated with a three element symbolic dynamics which allows to distinguish extrasystoles from tachycardia or bradycardia using the symbol sequences. © 2004 American Institute of Physics
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