METHOD FOR ELECTROCARDIOGRAM PROCESSING TO ISOLATE STAGES IN DYNAMICS OF CHANGES IN MYOCARDIUM FUNCTIONAL STATE Russian patent published in 2017 - IPC A61B5/402 

FIELD: medicine.

SUBSTANCE: patient's electrocardiogram signal is automatically recorded. It is digitized and recorded, cardiocycles are isolated, amplitudes and durations of the main signal deflection, segments and intervals. The coefficients of the continuous wavelet transform are calculated. At that, for each cardiocycle, its local points of extremum of surface zero isolines formed by the coefficients of wavelet transformation of the cardiac cycle under consideration are determined and indices of the characteristic cipher are assigned to them by indicating the letters corresponding to them above the horizontal line, if this point is maximum, and below the line if the point is minimum, their interrelationships are indicated by adding an index of the extremum point, if there is a relationship through a zero isoline between the extremum points and the lack of an index otherwise. Selection of the basic isolines and determination of the topological properties of their structure is carried out using the results of amplitude-time analysis of the cardiac cycle, transition from one electrocardiographic stage in the myocardium dynamics to another is established by changing the characteristic cipher of the cardiocycle with time when changes are recorded in the analyzed electrocardiogram.

EFFECT: method allows to track the stages in the dynamics of changes in the functional state of the myocardium in an automatic mode.

13 cl, 11 dwg