FIELD: medicine. SUBSTANCE: method involves selecting information from electric signal of cardiac rhythm with high order derivatives of functions to be analyzed being calculated using mathematical procedures. Sinusoid rhythm function is recorded as digital data sequence providing their following input and processing on personal computer. To enable the high order derivatives significance and method sensitivity to small deviations, measurement rate is selected to be two orders of value higher than cardiac rhythm frequency values order. Amplitude scale is quantified with 16 digital position precision. System functioning in discrete time moments is represented by phenomenological recurrent equation. EFFECT: high reliability in setting diagnosis. 5 dwg
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