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>Journals >Gaceta Médica de México >Year 2018, Issue 3


Rodríguez J, Prieto S, Ramírez L
Cardiac dynamics evaluation with the application of methodologies based on proportional entropy and on Zipf-Mandelbrot law
Gac Med Mex 2018; 154 (3)

Language: Español
References: 41
Page: 287-294
PDF: 309.42 Kb.


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ABSTRACT

Introduction: Physical-mathematical methodologies have been useful for the diagnosis of cardiac dynamics. Objective: To compare the application of two mathematical methodologies for cardiac dynamics evaluation, one of them based on entropy proportions and the other based on of Zipf-Mandelbrot law. Method: 10 Holter, 5 acute disease dynamics and 5 normal records were taken. A numerical attractor was constructed; probability, entropy and entropy proportions were evaluated. To apply the second methodology, heart rate values were grouped in 15-beat/min ranges, and Zipf-Mandelbrot’s law was applied in order for the statistical fractal dimension to be obtained. Finally, the mathematical evaluation obtained by both methodologies was compared. Results: The methodology based on entropy proportions differentiated normality, disease and intermediate states. The second methodology differentiated normality from acute disease through the degree of complexity. Conclusion: Both methodologies establish diagnostically helpful evaluations of cardiac dynamics in an objective and reproducible way. Proportional entropy allows normality, disease and evolution between states to be quantified in a predictive manner and with higher accuracy.


Key words: Heart rate, Entropy, Mathematics methods, Cardiac dynamics.


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>Journals >Gaceta Médica de México >Year 2018, Issue 3
 

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