The parameters of cardiac-muscle repolarization: The measurement and information value

We performed a comparative analysis of different classes of algorithms for computer-assisted cardiological diagnostics. The concepts of an “internal” and “external” image of myocardial ischemia were formulated. We also discussed the biophysical aspects for the basic indices of spatial heterogeneity of the repolarization process in the myocardium, as well as the problems of measurement of the corresponding parameters. The experimental part was performed on two groups of patients. Both experimental and control groups included two sets of 12-lead electrocardiograms of real patients: “Normal” and “Ischemia” (with lateral localization). The experimental group consisted of 202 and 143 electrocardiograms, while the control group consisted of 200 and 91 electrocardiograms, respectively. The electrocardiograms were verified according to the Minnesota Code criteria.