Further evidence supporting the concept of T-wave memory: observation in patients having undergone high-energy direct current catheter ablation of the Wolff-Parkinson-White syndrome
Identifieur interne : 002581 ( Main/Exploration ); précédent : 002580; suivant : 002582Further evidence supporting the concept of T-wave memory: observation in patients having undergone high-energy direct current catheter ablation of the Wolff-Parkinson-White syndrome
Auteurs : J. E. Poole [États-Unis] ; G. H. Bardy [États-Unis]Source :
- European Heart Journal [ 0195-668X ] ; 1992-06.
Abstract
Following successful high-energy direct current catheter ablation of posterior septal accessory pathways, serial T-wave changes were observed in seven patients with Wolff-Parkinson- White syndrome, but not in two patients with a concealed accessory bypass pathway. Following catheter ablation in the patients with Wolff-Parkinson-White syndrome, the previously upright T-waves in the inferior electrocariographic leads became inferiorly directed. Serial electrocardiograms following catheter ablation revealed slow regression of these T-wave changes over time. In contrast, in the two patients in whom a concealed accessory pathway was present, the T-waves prior to and following the procedure were upright. In these two patients, serial electrocardiograms showed no evolution of the T-wave vector over the same time period. Although a small rise in myocardial CK enzymes was observed, ischaemic injury in the area of catheter ablation could not be documented by post-procedure echocardiography, tomographic thallium scintigraphy, technetium pyrophosphate scinti-graphy or coronary angiography with left ventriculography. We conclude that the observed T-wave changes in the patients with Wolff-Parkinson-White syndrome may be a result of the change in depolarization sequence resulting from loss of pre-excitation, and that the time-dependent nature of these T-wave changes is consistent with the concept of T-wave ‘memory’.
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DOI: 10.1093/oxfordjournals.eurheartj.a060260
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Following catheter ablation in the patients with Wolff-Parkinson-White syndrome, the previously upright T-waves in the inferior electrocariographic leads became inferiorly directed. Serial electrocardiograms following catheter ablation revealed slow regression of these T-wave changes over time. In contrast, in the two patients in whom a concealed accessory pathway was present, the T-waves prior to and following the procedure were upright. In these two patients, serial electrocardiograms showed no evolution of the T-wave vector over the same time period. Although a small rise in myocardial CK enzymes was observed, ischaemic injury in the area of catheter ablation could not be documented by post-procedure echocardiography, tomographic thallium scintigraphy, technetium pyrophosphate scinti-graphy or coronary angiography with left ventriculography. We conclude that the observed T-wave changes in the patients with Wolff-Parkinson-White syndrome may be a result of the change in depolarization sequence resulting from loss of pre-excitation, and that the time-dependent nature of these T-wave changes is consistent with the concept of T-wave ‘memory’.</div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Washington (État)</li></region><settlement><li>Seattle</li></settlement><orgName><li>Université de Washington</li></orgName></list><tree><country name="États-Unis"><region name="Washington (État)"><name sortKey="Poole, J E" sort="Poole, J E" uniqKey="Poole J" first="J. E." last="Poole">J. E. Poole</name></region><name sortKey="Bardy, G H" sort="Bardy, G H" uniqKey="Bardy G" first="G. H." last="Bardy">G. H. Bardy</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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