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2009 WRI World Congress on Computer Science and Information Engineering
Alternans Lowers the Scaling Exponent of Heartbeat Fluctuation Dynamics: A Detrended Fluctuation Analysis in Animal Models and Humans
Los Angeles, California USA
March 31-April 02
ISBN: 978-0-7695-3507-4
The period-2 rhythm so called as “Alternans” is an arrhythmia exhibiting alternating amplitude or alternating interval from heartbeat to heartbeat, which was first described in 1872 by Traube. Recently, Alternans was finally recognized as the harbinger of a cardiac disease, because physicians noticed that an ischemic heart exhibits Alternans. To quantify irregularity of the heartbeat, including Alternans, we used the detrended fluctuation analysis (DFA). We revealed that in both, animal models and humans, the Alternans rhythm lowers the scaling exponent.  With the scaling exponents calculation by the DFA it might be possible to find out a reliable sign for a risk for the “failing” heart.
Index Terms:
Heartbeat, Alternans, DFA, Scaling exponent, Animal model
Citation:
Toru Yazawa, Katsunori Tanaka, Tomoo Katsuyama, "Alternans Lowers the Scaling Exponent of Heartbeat Fluctuation Dynamics: A Detrended Fluctuation Analysis in Animal Models and Humans," csie, vol. 1, pp.221-225, 2009 WRI World Congress on Computer Science and Information Engineering, 2009
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