Affiliation:
1. E.I.Chazov National Medical Research Center for Cardiology of the Ministry of Health of Russia
Abstract
Objective: to evaluate sustainability of spatial QRS-T angle of vectorcardiogram to filtration.Materials and methods: Vectorcardiographic records in Frank lead system obtained from 53 randomly included patients with sinus normocardia (28–80 years) were synthesized by means of special algorithm developed in our laboratory based on Bemmel’s matrix. The changes in P, Q, R, S, T amplitudes and in the values of spatial QRS-T angle were analysed at different modes of filtering (70 Гц, 40 Гц, 30 Гц) and without filtering.Results: all of the filtration modes studied diminished the amplitudes of ventricular complex components while no significant changes in the values of spatial QRS-T angle were observed.Conclusion: a new methodology for ECG and VCG parameters sustainability to signal processing (filtration) was developed and tested; the hypothesis about sustainability of spatial QRS-T angle of vectorcardiogram to filtration was approved. Taking into account that spatial QRS-T angle is known as a strong predictor of cardiac diseases, it seems perspective to be implemented in automatic ECG analysis algorythms.
Subject
Materials Chemistry,Economics and Econometrics,Media Technology,Forestry
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