Biophysical Characterization of Integral Vectorcardiographic Parameters

The theoretical analysis of three integral vectorcardiographic parameters, namely the integral vectors of the heart ventricle depolarization and repolarization, as well as the spatial vector of the ventricular gradient, was carried out. The systematic description and biophysical interpretation of integral parameters based on the representation of the heart vector through the distribution of characteristics of the cardiomyocyte action potential for the heterogeneous bidomain myocardium model are given. Nowadays, medical research has shown the high efficiency and predictive value of these parameters. The results obtained here are useful in the modeling of vectorcardiograms for various pathological conditions states of the heart ventricles and for various characteristics of the cardiomyocyte action potential, which determine its shape. An explanation with graphic illustration is given for the very informative decartogram of repolarization acceleration.