Nonlinear Dynamic Analysis of the Heart Sound Based on Chaos Theory

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (15) : 55-59.

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Nonlinear Dynamic Analysis of the Heart Sound Based on Chaos Theory

DING Xiao-rong1, GUO Xing-ming1, ZHONG Li-sha1

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Abstract

Abstract：In order to get more valuable information from the perspective of nonlinear, a method based on chaos theory was proposed to analyze the heart sound. The correlation dimension and largest lyapunov exponent were calculated, besides, the recurrence plot and its quantification analysis parameters were obtained. And they were used to study the heart sounds of 13 cases of normal people and 13 cases with mitral stenosis. The results showed that these chaotic features between the normal heart sounds and that with mitral stenosis were significantly different. Thus, this method can be applied to assistance diagnosis for the mitral stenosis.

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chaos / heart sound / mitral stenosis / correlation dimension / recurrence plot

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DING Xiao-rong;GUO Xing-ming;ZHONG Li-sha. Nonlinear Dynamic Analysis of the Heart Sound Based on Chaos Theory[J]. Journal of Vibration and Shock, 2012, 31(15): 55-59