Selection Parameters in the ECG Signals for Analysis of QRS Complexes

An approach to processing and analyzing ECG data based on high-precision determination of R peaks in QRS complexes and a statistical analysis of the QRS complex duration and ECG signal dispersion online is studied. A method is proposed for effectively finding R peaks in the ECG. Conducted statistical sequential analysis to study the behavior of R peaks, the significant difference of which is that the number of observations necessary to make a decision on the hypothesis depends on the test results and is a random variable. The method of successive testing of a hypothesis involves at each stage of monitoring the state of the heart rhythm making a decision on the presence or absence of violations. It turned out that a consistent assessment of the variance of the cardiogram in a healthy person has a pronounced linear character. With a poor heart rate, the areas where the heart works ambiguously are clearly expressed.