[Possibilities of utilizing integral topography, vectorometry and spectral analysis of the complexograms for the diagnosis of ischemic heart disease].

Three approaches to the study of electric and mechanical heart activity were used, which were significant in the diagnosis of various variants of ischemic heart disease. The method of integral topography proved most applicable in the diagnosis of microfocal myocardial infarction. Infarctions which were marked by a typical clinical picture and the corresponding laboratory data (changes in enzymes, leukocytosis, etc)., but could not be sufficiently revealed in the commonly applied 12 leads of the ECG, were successfully identified due to changes in the ST--T zones of the topogram. In the diagnosis of ischemic heart disease attended with disorders of hemodynamics it is advisable to apply the histogram method of identification on the basis of spectral analysis of the complexograms, ballistocardiograms, arteriovenous pulsograms, and phonooscillograms. This method may also be used to assess the stage of circulatory insufficiency. In preventive examination for detecting ischemic heart disease, its painless variants in particular, it is advantageous to use the method of vectorometry of the ECG in in orthogonal leads with the subsequent solution of the diagnostic discrimination polynomials on a computer.