Cited by 70Atrial Fibrillation Management and OutcomesCardiac Arrhythmias and TreatmentsCardiac electrophysiology and arrhythmias

Non-Pulmonary Vein Triggers of Atrial Fibrillation Are Likely to Arise from Low-Voltage Areas in the Left Atrium

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Kawai, Shunsuke, Mukai, Yasushi, Inoue, Shujiro, Yakabe, Daisuke, Nagaoka, Kazuhiro, Sakamoto, Kazuo, Takase, Susumu, Chishaki, Akiko +1 more·2019·Scientific Reports

Abstract

The pathophysiology of non-pulmonary vein (PV) triggers of atrial fibrillation (AF) is unclear. We hypothesized that left atrial non-PV (LANPV) triggers are associated with atrial tissue degeneration. This study analyzed 431 patients that underwent catheter ablation (mean age 62 yrs, 303 men, 255 paroxysmal AF [pAF] patients). Clinical and electrophysiological characteristics of non-PV trigger were analyzed. Fifty non-PV triggers in 40 patients (9.3%) were documented; LANPV triggers were the most prevalent (n = 19, 38%). LANPV triggers were correlated with non-paroxysmal AF (non-pAF) (OR 3.31, p = 0.04) whereas right atrial non-PV (RANPV) triggers (n = 14) and SVC triggers (n = 17) were not. The voltage at the LANPV sites during SR was 0.3 ± 0.16 mV (p < 0.001 vs. control site). Low-voltage areas (LVAs) in the LA were significantly greater in non-pAF compared to pAF (14.2% vs. 5.8%, p < 0.01). RANPV trigger sites had preserved voltage (0.74 ± 0.48 mV). Long-term outcomes of patients with non-PV triggers treated with tailored targeting strategies were not significantly inferior to those without non-PV triggers. In conclusion, non-PV triggers arise from the LA with degeneration, which may have an important role in AF persistence. A trigger-oriented, patient-tailored ablation strategy considering LA voltage map may be feasible and effective in persistent/recurrent AF.

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  • Atrial fibrillation can recur due to triggers outside the pulmonary veins, including ectopic activity from the posterior left atrium, superior vena cava, or coronary sinus, or from structural remodeling of the atria unrelated to the pulmonary veins, such as fibrosis, inflammation, or electrical heterogeneity.

    “AF can recur due to triggers outside of these areas, including ectopic activity from the posterior left atrium, superior vena cava, or the coronary sinus, or from other mechanisms of the structural remodeling of the atria, unrelated to the pulmonary veins, such as fibrosis, inflammation, or electrical heterogeneity [91].”

    From Atrial Fibrillation in Elite Athletes: A Comprehensive Review of the Literature (2024) · cites this paper as [91]

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  • PVI targets atrial fibrillation triggers originating from the pulmonary veins.

    “PVI targets AF triggers originating from the pulmonary veins”
  • PVI ablation does not ensure the absence of non-pulmonary vein-dependent atrial fibrillation recurrences in the future.

    “It is important to note that PVI ablation does not ensure the absence of non-pulmonary vein-dependent AF recurrences in the future.”

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Authors
Kawai, S., Mukai, Y., Inoue, S., Yakabe, D., Nagaoka, K., Sakamoto, K., Takase, S., Chishaki, A., & Tsutsui, H.
Affiliations
Kyushu University (JP)
Corresponding author
Mukai, Yasushi
Venue
Scientific Reports
Published
2019-08-22
Volume
9
Issue
1
Pages
12271-12271
ISSN
2045-2322 (ISSN-L)
OpenAlex
W2969790472
Cited by
70
References
34
Citations by year
2026: 8 · 2025: 16 · 2024: 11 · 2023: 10 · 2022: 15 · 2021: 5 · 2020: 5
FWCI
4.52
Type
journal article
Language
en
Open access
Locations
  • Scientific Reports (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Kyushu University Institutional Repository (QIR) (Kyushu University) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
Bristol-Myers Squibb (#GAKF850098)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
Keywords
atrial fibrillation, non-pulmonary vein triggers, left atrium, low-voltage areas, catheter ablation, paroxysmal atrial fibrillation, non-paroxysmal atrial fibrillation, persistent atrial fibrillation
MeSH terms
Aged, Atrial Fibrillation, Female, Follow-Up Studies, Heart Atria, Humans, Male, Middle Aged, Pulmonary Veins, Catheter Ablation, Electrophysiologic Techniques, Cardiac

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