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Related Experiment Video

Updated: Feb 16, 2026

Robotic Ablation of Atrial Fibrillation
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Scar homogenization in AF ablation: Evolution and practice.

Minglong Chen1

  • 1The First Affiliated Hospital of Nanjing Medical University, Nanjing, 210029, China.

Journal of Atrial Fibrillation
|December 19, 2017
PubMed
Summary
This summary is machine-generated.

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Atrial fibrosis is linked to atrial fibrillation (AF), creating electrical abnormalities. Targeting these fibrotic areas during ablation shows promise, but standardized methods and further trials are needed for optimal outcomes.

Area of Science:

  • Cardiology
  • Electrophysiology
  • Medical Imaging

Background:

  • Atrial fibrosis is scientifically proven to correlate with atrial fibrillation (AF).
  • Fibrotic tissue disrupts normal electrical conduction, creating a substrate that sustains AF.
  • These fibrotic areas manifest as signal abnormalities detectable via electroanatomic mapping.

Purpose of the Study:

  • To review the evidence linking atrial fibrosis and atrial fibrillation.
  • To discuss the role of substrate modification in AF ablation.
  • To highlight the need for standardized methodologies in targeting fibrotic areas.

Main Methods:

  • Review of laboratory, histology, imaging, and clinical studies.
  • Analysis of electroanatomic mapping data.
Keywords:
Atrial fibrillationAtrial fibrosisCatheter ablationHomogenizationLow voltage zone

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  • Discussion of ablation strategies targeting fibrotic substrate.

    • Main Results:

    • Consistent evidence demonstrates a positive correlation between atrial fibrosis and AF.
    • Targeted ablation of fibrotic areas, combined with pulmonary vein isolation, yields beneficial results.
    • Fibrotic regions are identifiable through electroanatomic mapping as low-voltage or complex electrogram areas.

    Conclusions:

    • Atrial fibrosis is a key substrate for maintaining atrial fibrillation.
    • Substrate modification by targeting fibrotic areas is a promising strategy in AF ablation.
    • Further research is required to establish unified methodologies for scar definition, mapping, and endpoint determination, along with large-scale trials to confirm long-term efficacy.