Simulation of late potentials using a computerized three dimensional model of the heart´s ventricles with fractal conduction system

Author

Barenfeld, O. ; Sadeh, Dror ; Abboud, Shimon

Author_Institution

Raymond & Beverly Sackler Fac. of Exact Sci., Tel-Aviv Univ., Israel

fYear

1989

fDate

19-22 Sep 1989

Firstpage

137

Lastpage

140

Abstract

A three-dimensional model of the ventricles with a self-similar (fractal) conduction system is introduced to generate high-temporal-resolution QRS signals. The signals are obtained under normal and various damaged conditions. The obtained signals are 60-200 Hz bandpass filtered, and two parameters which have been used as markers for the presence of late potential activity are measured: (1) the filtered QRS duration and (2) the root-mean-square voltage of the last 40 ms. The effects of the ventricular conditions on the two parameters are described. It is demonstrated that the late potential activity can be attributed to a regional reduction in propagation velocity but that this is not a sufficient condition for their detection

Keywords

cardiology; digital simulation; fractals; physiological models; 40 ms; 60 to 200 Hz; bandpass filtering; cardiac ventricles; computerized 3D model; filtered QRS duration; fractal conduction system; high-temporal-resolution QRS signals; late potential activity; late potentials simulation; root-mean-square voltage; Band pass filters; Computational modeling; Computer simulation; Electrocardiography; Filtering; Fractals; Heart ventricles; Muscles; Signal analysis; Signal generators;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology 1989, Proceedings.

Conference_Location

Jerusalem

Print_ISBN

0-8186-2114-1

Type

conf

DOI

10.1109/CIC.1989.130503

Filename

130503