Optimizing the device model for recording low-amplitude high-frequency cardiac signals

The low-amplitude, high-frequency components of the electrocardiogram signal, especially the late ventricular potentials, are highly informative for the diagnosis of sudden death syndrome. The existing instrumental and software tools for detecting such signals do not provide sufficient accuracy and reproducibility of the results, which depend on the characteristics of the filters used, the accuracy of fixing the beginning of the QRS complex, and the number of cycles of synchronous accumulation of the cardiac signal. This concerns the identification of the stationary and dynamic components of the late ventricular potentials, and the assessment of the energy characteristics of the signals. In this regard, the problem of improving the means of isolating low-amplitude high-frequency components of the EC remains relevant at the present time.

Goal of the research. To develop and investigate a computer model of a device for recording low-amplitude high-frequency components of an ECG signal and optimize its structure to reduce the level of introduced signal distortion.

A computer model of a device for recording low-amplitude high-frequency (LAHF) components of an ECG signal has been optimized and investigated, which reduces the level of introduced distortions and makes it possible to assess the ECG segments of interest for further evaluation of the characteristics of the micro potentials of the heart. The optimized structure of the LAHF registration device model makes it possible to increase the accuracy of assessing the characteristics of the micro potentials of the heart. The simulation results are recommended for use in the development of LAHF recording devices in high-resolution electrocardiography systems.