[Spectral analysis of body surface ECG maps].
A signal-averaging technique was applied to 60-lead epicardial mapping in dogs and 87-lead body surface mapping in patients with anterior myocardial infarction. By means of fast Fourier transform and inverse fast Fourier transform analysis, we obtained the reconstructed signals of several frequency ranges in the QRS complex. We showed the effects of myocardial infarction on QRS spectral changes and discussed the usefulness of this method for evaluating ventricular tachycardia and left ventricular function after myocardial infarction.
Kubota
I
I
First Department of Internal Medicine, Yamagata University.
D000818:Animals; D018780:Body Surface Potential Mapping / Q000379:methods*; D004285:Dogs; D005583:Fourier Analysis; D006801:Humans; D009203:Myocardial Infarction / Q000175:diagnosis / Q000503:physiopathology; D017180:Tachycardia, Ventricular / Q000175:diagnosis; D016277:Ventricular Function, Left