PMID: 8913904Oct 1, 1996Paper

Relationship between QRS duration and repolarization abnormalities in patients with Wolff-Parkinson-White syndrome

Journal of Electrocardiology
F Inaba-SatoH Saito


Marked T wave abnormalities in 12-lead electrocardiograms often appear after radiofrequency ablation in patients with Wolff-Parkinson-White (WPW) syndrome. Durations of the QRS complex before ablation have been reported to be significantly greater in patients with repolarization abnormalities after ablation than in those with normal repolarization. However, there has been no report concerning the relationship between QRS duration and repolarization abnormalities before ablation. It has been reported that QRST isointegral maps are dependent on local cellular repolarization properties but largely independent of activation sequence, and that they provide quantitative information about repolarization abnormalities. Isointegral maps were constructed from data recorded in 34 patients with WPW syndrome and QRS durations of 0.1 second or longer (21 patients with left-sided accessory pathways and 13 with right-sided pathways) in order to investigate the relationship between QRS duration and abnormalities in repolarization properties during preexcitation. Body surface ECGs were recorded with an 87-lead system at a sampling interval of 1 ms. The QRST values (mean +/- 2SD) from 607 normal individuals were taken to represent the normal rang...Continue Reading


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Aug 1, 1982·The American Journal of Cardiology·M B RosenbaumJ M Davidenko
Jul 1, 1981·Journal of Electrocardiology·P NicolaiA Pisapia

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