Key result
Patients with idiopathic ventricular tachycardia of left ventricular origin had significantly higher area ratios on frequency analysis of signal-averaged ECGs compared to normal volunteers.
Why the study?
Does spectral analysis of signal-averaged ECGs using FFT detect high-frequency components in patients with idiopathic VT of left ventricular origin compared to normal volunteers?
Population
37 subjects, comprising 12 patients with idiopathic ventricular tachycardia originating from the left…
Comparison
Spectral analysis of signal-averaged ECGs using… vs Age-matched normal volunteers.
Design
Case-control
Authors
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May aid noninvasive detection of high-frequency QRS components in idiopathic VT; hypothesis-generating and requires prospective validation.
Case-Control (n=37)
Does spectral analysis of signal-averaged ECGs using FFT detect high-frequency components in patients with idiopathic VT of left ventricular origin compared to normal volunteers?
Frequency analysis of signal-averaged ECGs with FFT can detect high-frequency components within the QRS complex in patients with idiopathic VT of left ventricular origin.
Kinoshita et al. (1992) conducted a case-control in Idiopathic ventricular tachycardia of left ventricular origin (n=37). Idiopathic ventricular tachycardia of left ventricular origin vs. Age-matched normal volunteers was evaluated on Area ratio 1 (20-50 Hz/10-50 Hz) and area ratio 2 (40-100 Hz/0-40 Hz) on frequency analysis of signal-averaged ECGs. Patients with idiopathic ventricular tachycardia of left ventricular origin had significantly higher area ratios on frequency analysis of signal-averaged ECGs compared to normal volunteers.
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