Analysis of Power Spectrums in Heart Signals to Detect the Presence of Low-Amplitude High-Frequency Components

Purpose of this study is effective registration of low-amplitude high-frequency components with predictive value - ventricular late potentials (VLPs) - in electrocardiosignals (ECS) by Ist standard lead. 232 signals were preliminary evaluated to detect VLPs by Simson’s method. VLPs were detected in 34 signals. Modification of signal-averaged approach was applicated to analyzed signals. Power spectrums of heartbeat signals’ terminal part were analyzed in this study. Designed algorithm showed 82.75% of correct decisions. Originality: new parameter to detect VLPs by Ist standard lead lead was proposed. Parameter’s threshold value is calculated. Threshold frequencies with maximal percentage of correct decisions were determined. Opportunity to detect VLPs in signals by Ist standard was evaluated: it is possible to detect VLPs using spectral analysis. Practical significance: results will be useful for ECS analysis block in telemedicine systems and onboard communications.