Cited by 338Cardiac Arrhythmias and TreatmentsAtrial Fibrillation Management and OutcomesCardiac electrophysiology and arrhythmias

Prevalence, mechanisms, and clinical significance of macroreentrant atrial tachycardia during and following left atrial ablation for atrial fibrillation

Chugh, Aman, Oral, Hakan, Lemola, Kristina, Hall, Burr, Cheung, Peter, Good, Eric, Tamirisa, Kamala, Han, Jihn +3 more·2005·Heart Rhythm

Abstract

Objectives The purpose of this study was to determine the prevalence and clinical significance of macroreentrant atrial tachycardia (AT) after left atrial (LA) circumferential ablation for atrial fibrillation (AF).Background Linear ablation for AF may result in macroreentrant AT.Methods Three hundred forty-nine patients (age 54 +/- 11 years) underwent LA circumferential ablation for AF (paroxysmal in 227). Ablation lines were created around the left-sided and right-sided pulmonary veins, with additional ablation lines in the posterior LA and mitral isthmus. If macroreentrant AT was observed acutely in the electrophysiology laboratory, it was not ablated. If an organized AT occurred during follow-up, the initial strategy was rate control. If AT persisted for > 3 to 4 months, catheter ablation was performed.Results Seventy-one patients (20%) had spontaneous or induced macroreentrant AT (cycle length 244 +/- 31 ms) in the electrophysiology laboratory following LA circumferential ablation. During follow-up, 85 patients (24%) experienced spontaneous AT (cycle length 238 +/- 35 ms) at a mean of 44 +/- 62 days following LA circumferential ablation. Among the 71 patients with macroreentrant AT acutely following LA circumferential ablation, 39 (55%) developed AT during follow-up. Among the 85 patients with AT during follow-up, the tachycardia remitted without a repeat ablation procedure in 28 patients (33%), most commonly within 5 months. Twenty-eight of the 349 patients (8%) underwent a repeat ablation procedure for AT. The critical isthmus was localized to the mitral isthmus in 17 of 28 patients (61%).Conclusions Macroreentrant AT is a common form of proarrhythmia after LA circumferential ablation for AF. Because it may resolve spontaneously, ablation of AT should be deferred for several months.

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Crossref · 10.1016/j.hrthm.2005.01.027

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Authors
Chugh, A., Oral, H., Lemola, K., Hall, B., Cheung, P., Good, E., Tamirisa, K., Han, J., Bogun, F., Pelosi, F., & Morady, F.
Affiliations
Michigan Medicine (US)
Corresponding author
Chugh, Aman
Venue
Heart Rhythm
Publisher
Elsevier BV
Published
2005-05
Volume
2
Issue
5
Pages
464-471
ISSN
1547-5271 (ISSN-L)
OpenAlex
W1995607946
Cited by
338
References
16
Citations by year
2026: 4 · 2025: 3 · 2024: 9 · 2023: 9 · 2022: 15 · 2021: 14 · 2020: 12 · 2019: 18 · 2018: 9 · 2017: 17 · 2016: 8 · 2015: 26 · 2014: 11 · 2013: 13 · 2012: 30
FWCI
15.95
Type
journal article
Language
en
Open access
closed
Locations
  • Heart Rhythm (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
macroreentrant atrial tachycardia, atrial fibrillation, pulmonary vein isolation, drug-induced arrhythmia, mitral isthmus, repeat ablation, paroxysmal atrial fibrillation
MeSH terms
Atrial Fibrillation, Electrocardiography, Female, Heart Atria, Heart Conduction System, Humans, Male, Middle Aged, Pulmonary Veins, Tachycardia, Ectopic Atrial, Catheter Ablation, Electrophysiologic Techniques, Cardiac

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