T.A. Vityazeva1, A.A. Mikheev2

1,2 FSBEI HE «Ryazan State Radio Engineering University named after V.F. Utkin» (Ryazan, Russia)

1 vsv630@yandex.ru, 2 maa0312@yandex.ru

This article discusses the formation of reference points in each heartbeat cycle to determine the sequence of intervals used in the analysis of heart rate variability. The problem of assessing the stability of the reference points formed by known methods and the effect of the instability of the reference points on the results of heart rate variability parameters determined in the time domain is solved. Using the example of processing an electrocardiosignal using a well-known algorithm, it is shown how the estimated parameters change due to the instability of the formed reference points.

The goal is to analyze how stable the reference points are formed in each cycle of heartbeat by known methods, and to evaluate the effect of the instability of the reference points on the parameters of heart rate variability determined in the time domain.

In each heartbeat cycle, the delay intervals of the pulse appearance relative to the wave maximum value were measured. The influence of the variability of the position of the reference points in each heartbeat cycle on the parameter of the analysis of heart rate variability in the time domain, which reflects the activity of the parasympathetic nervous system and high-frequency fluctuations in the structure of heart rate variability, is estimated.

The results revealed the problem of the influence of instability in the formation of reference points in each heartbeat cycle on the determination of interval lengths used in the analysis of heart rate variability, and, as a result, on the assessment of heart rate variability parameters. In this regard, the task should be set to increase the stability of the formation of reference points.

Vityazeva T.A., Mikheev A.A. Evaluation of stability of reference points formation in each heartbeat cycle // Biomedicine Radioengineering. 2026. V. 29. № 5. Р. 78-84. DOI: https://doi.org/10.18127/j15604136-202605-12

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