The simulation results of the high-pass and low-pass filter effect on the quality of micropotential recordings on the electrocardiogram; Biology and Medicine; Vol. 6, iss. 1

The simulation results of the high-pass and low-pass filter effect on the quality of micropotential recordings on the electrocardiogram; Biology and Medicine; Vol. 6, iss. 1

Bibliographic Details
Parent link:Biology and Medicine
Vol. 6, iss. 1.— 2014.— [BM-015-14, 10 p.]
Other Authors: Avdeeva D. K. Diana Konstantinovna, Kazakov V. Yu. Veniamin Yurevich, Natalinova N. M. Nataliya Mikhailovna, Ivanov M. L. Maxim Leonidovich, Yuzhakova M. A. Maria Aleksandrovna, Turushev N. V. Nikita Vladimirovich
Summary:Title screen
The paper presents the results of investigation on the distortions of the fine structure of the heart biopotentials causedby filtering circuits of medical diagnostic equipment. The method of computer simulation is used. Some programsfor simulating different types of filters (Bessel, Chebyshev, Butterworth, and elliptic) are developed using LabViewsoftware. The artificially generated electrocardiograms (ECG) and high-resolution signals recorded with the equipmentbased on high-stable low-noise nanoelectrodes in the band from 0 to 150 Hz are used as test signals. Filters used inthe ECG equipment may change the amplitude, wavelength, and displacement of (ECG) intervals. When using lowpassfilters, small frequency cutoff value makes the low-amplitude potentials of 5-20 mV virtually invisible on the ECG.The higher the order of the filters, the greater is the distortion regardless of the type of filters. The amplitude ripple of filtersin the passband and a nonlinear character of phase response contribute to cardiac signal disturbance equal to theinformative low-amplitude of the heart biopotential by the order of magnitude. In some cases, application of diagnosticcriteria to the filtered signal can produce erroneous results. The data analysis shows that the amplitude of the signaldistortion due to time delays and frequency response for different types of filters range from 2 to 15%, which is comparableto the amplitudes of the ventricular late potential which amount to 2% of the amplitude of the cardiac signal.
Режим доступа: по договору с организацией-держателем ресурса
Language:English
Published: 2014
Subjects:
электронный ресурс
труды учёных ТПУ
Online Access:http://www.biolmedonline.com/Articles/Vol6_1_2014/BM-015-14_Kazakov.pdf
Format: Electronic Book Chapter
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=642282

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