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- W2022127818 abstract "Objectives. The purpose of this study was to analyze the frequency content of signal-averaged electrocardiograms (ECGs) in patients with idiopathic ventricular tachycardia of right ventricular origin and in patients with arrhythnogenic right ventricular dysplasia. Background. The late potentials in the time domains are usually found in patients with arrhythmogenic right ventricular dysplasia. They are not usually found in patients with idiopathic ventricular tachycardia of right ventricular origin. Methods. Fast Fourier transform analysis of signal-averaged ECGs was performed with the use of a Blackman-Harris window in 43 subjects: 20 normal volunteers (group I), 12 patients with idiopathic ventricular tachycardia of right ventricular origin (group II) and 11 patients with arrhythmogenic right ventricular dysplasia (group III), and the frequency spectrum was displayed in a three-dimensional graph. Area ratio (ratio of the area under the spectral plot from 40 to 120 Hz to the area from 0 to 120 Hz) was calculated in all subjects. Results. Area ratio was significantly higher in group II than in group I (243 ± 45 vs. 196 ± 15, p < 0.01) and significantly higher in group III (396 ± 51) than in group I or II (p < 0.001). The high frequency components in group II were confined within the QRS complex in the three-dimensional graph, whereas those in group III extended outside the QRS complex. Conclusions. Frequency analysis of the signal-averaged ECG with fast Fourier transform analysis can detect the high frequency components in patients with right ventricular tachycardia, including Idiopathic ventricular tachycardia and arrhythmogenic right ventricular dysplasia." @default.
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- W2022127818 date "1992-11-01" @default.
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- W2022127818 title "Frequency analysis of signal-averaged electrocardiogram in patients with right ventricular tachycardia" @default.
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- W2022127818 doi "https://doi.org/10.1016/0735-1097(92)90382-w" @default.
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