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February 8, 2026European Heart Journal

Increased EAT attenuation on CT correlates with a low ~58% success rate in paroxysmal AF ablation.

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Why the study?

Strong evidence supporting the clinical significance of CT-measured EAT attenuation, reflecting localized inflammation, in predicting AF ablation efficacy remains limited.

Do epicardial adipose tissue parameters assessed by CT predict arrhythmia recurrence in patients undergoing first-time ablation for paroxysmal AF?

Population

Fifty-two patients with paroxysmal AF undergoing first-time, single-shot pulmonary vein isolation

Comparison

CT-assessed EAT volume and mean attenuation parameters compared by arrhythmia recurrence status

Design

Prospective cohort study

Follow-up

Median 14 months (Q1-Q3: 10-21 months)

Key result

Increased epicardial adipose tissue attenuation on CT correlates with reduced success rate (57.69%) of atrial fibrillation ablation in paroxysmal AF patients.

Authors

KMK MomotKKKamil KrauzDRDariusz Rodkiewicz

Discussion

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Member takes

Overview

EAT attenuation on CT may serve as a prognostic marker for ablation outcomes in paroxysmal AF; leaves open its role in patient selection pending validation.

Key Points

  • The study aims to assess the prognostic value of epicardial adipose tissue parameters from CT scans in predicting outcomes after atrial fibrillation ablation.
  • Enrolled 52 patients with paroxysmal atrial fibrillation undergoing pulmonary vein isolation.
  • Conducted contrast-enhanced cardiac CT, clinical assessment, and echocardiography prior to the procedure.
  • Measured total-EAT and LA-EAT volume and mean attenuation based on Hounsfield units.
  • Success rate of the ablation procedure was 57.69%.
  • Increased attenuation of EAT on CT correlated with lower efficacy of the ablation procedure.
  • Documented recurrence of arrhythmia was defined as AF or atrial flutter lasting over 30 seconds during follow-up.

Structured PICO

Do epicardial adipose tissue parameters assessed by CT predict arrhythmia recurrence in patients undergoing first-time ablation for paroxysmal AF?

P
Population
52 patients with paroxysmal atrial fibrillation (AF) undergoing first-time, single-shot pulmonary vein isolation (via cryoballoon or pulsed-field ablation).
I
Intervention
Pre-procedural assessment of epicardial adipose tissue (EAT) parameters (volume and mean attenuation) using contrast-enhanced cardiac CT.
O
Outcome
Arrhythmia recurrence (documented AF or atrial flutter lasting more than 30 seconds) during follow-up, excluding the 3-month blanking period.hard clinical

Increased inflammatory activity of epicardial adipose tissue, measured via CT attenuation, may serve as a prognostic marker for reduced efficacy of AF ablation.

Cite This Study

Momot et al. (2025) studied this question. Increased epicardial adipose tissue attenuation on CT correlates with reduced success rate (57.69%) of atrial fibrillation ablation in paroxysmal AF patients.

synapsesocial.com/papers/698828b90fc35cd7a88486bbhttps://doi.org/10.1093/eurheartj/ehaf784.356
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Predictive Value of Epicardial Adipose Tissue Parameters Measured by Cardiac Computed Tomography for Recurrence of Atrial Fibrillation After Pulmonary Vein Isolation2025 · 2 citations
  2. 2Quantification of epicardial adipose tissue by computed tomographic scanning as a prognostic criterion of atrial fibrillation recurrence after catheter ablation2023 · 4 citations
  3. 3Is There an Association between Epicardial Adipose Tissue and Outcomes after Paroxysmal Atrial Fibrillation Catheter Ablation?2021 · 30 citations
  4. 4Association Between Left Atrial Epicardial Adipose Tissue Attenuation Assessed by Cardiac Computed Tomography and Atrial Fibrillation Recurrence Following Catheter Ablation: A Systematic Review and Meta-Analysis2025 · 10 citations
  5. 5Quantification of epicardial adipose tissue in patients undergoing hybrid ablation for atrial fibrillation2018 · 22 citations