ArticleJournal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing2023
Electrophysiological characteristics of epicardial atrial tachycardias and endocardial breakthrough site targeting for ablation: a single center experience.
Article in Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed, 5 citations in OpenAlex.
- Entrance-Site Ablation in Atrial Tachycardia Involving Epicardial Conduction: A Case Series.Journal of arrhythmia · 2026Article
- Epicardial muscle bundles in persistent atrial fibrillation: from overlooked bystanders to arrhythmogenic modulators.Journal of interventional cardiac electrophysiology : an international journal of arrhythmias and pacing · 2026Review
- Epicardial conduction via the septopulmonary bundle visualized by an esophageal temperature catheter in macroreentrant atrial tachycardia.HeartRhythm case reports · 2026Article
- Direct Epicardial Mapping and Ablation Revealing Three-Dimensional Roof-Dependent Macroreentrant Atrial Tachycardia Breaking Into Bachmann's Bundle.Clinical case reports · 2025Article
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Authors and funding
9 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDespite being increasingly observed in daily practice, epicardial atrial tachycardias (Epi AT) have not been extensively characterized. In the present study, we retrospectively characterize electrophysiological properties, electroanatomic ablation targeting, and outcomes of this ablation strategy.
methodsPatients who underwent scar-based macro-reentrant left atrial tachycardia mapping and ablation patients with at least one Epi AT, which had a complete endocardial map, were selected for the inclusion. Based on current electroanatomical knowledge, Epi ATs were classified based by utilization of following epicardial structures: Bachmann's bundle, septopulmonary bundle, vein of Marshall. Endocardial breakthrough (EB) sites were analyzed as well as entrainment parameters. EB site was targeted for initial ablation.
resultsAmong seventy-eight patients undergoing scar-based macro-reentrant left atrial tachycardia ablation, fourteen (17.8%) patients met the inclusion criteria for Epi AT and were included in the study. Sixteen Epi ATs were mapped, four utilizing Bachmann's bundle, five utilizing septopulmonary bundle, and seven utilizing vein of Marshall. Fractionated, low amplitude signals were present at EB sites. Rf terminated the tachycardia in ten patients; activation changed in five patients and in one patient atrial fibrillation ensued. During the follow-up, there were three recurrences.
conclusionsEpicardial left atrial tachycardias are a distinct type of macro-reentrant tachycardias that can be characterized by activation and entrainment mapping, without need for epicardial access. Endocardial breakthrough site ablation reliably terminates these tachycardias with good long-term success.
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