Key result
Radiofrequency catheter ablation abolished all 26 accessory pathways in 16 patients with Ebstein's anomaly, but failed for 6 of 8 pathways in 5 patients with abnormal local electrograms.
Why the study?
Does radiofrequency catheter ablation successfully treat reentrant atrioventricular tachycardias in patients with Ebstein's anomaly?
Population
21 patients with Ebstein's anomaly and reentrant atrioventricular tachycardias
Design
Case_series
Follow-up
22 +/- 12 months
Authors
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Abnormal electrograms may reduce ablation success in Ebstein's anomaly; leaves open refined mapping strategies for prospective study.
Observational (n=21)
Does radiofrequency catheter ablation successfully treat reentrant atrioventricular tachycardias in patients with Ebstein's anomaly?
In patients with Ebstein's anomaly, radiofrequency catheter ablation of accessory pathways is frequently impeded by abnormal local electrograms along the atrialized right ventricle, leading to lower procedural success and clinical recurrences.
Cappato et al. (1996) conducted an observational in Ebstein's anomaly and reentrant atrioventricular tachycardias (n=21). Radiofrequency current catheter ablation was evaluated on Abolition of accessory pathways. Radiofrequency catheter ablation abolished all 26 accessory pathways in 16 patients with Ebstein's anomaly, but failed for 6 of 8 pathways in 5 patients with abnormal local electrograms.
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