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Related Experiment Video

Updated: Dec 20, 2025

Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Minimally invasive, simplified double-layer left atrial appendage closure.

Ahmed Alnajar1,2, Corinne Aberle1,2, Joseph Lamelas1,2

  • 1Division of Cardiothoracic Surgery, Department of Surgery, Baylor College of Medicine, Houston, Texas.

Journal of Cardiac Surgery
|May 24, 2020
PubMed
Summary

Left atrial appendage (LAA) closure during mitral valve surgery effectively prevents stroke. This minimally invasive technique offers a safe and reproducible solution for patients with atrial fibrillation, reducing embolism risk.

Keywords:
ablationappendage ligationarrhythmiaarrhythmia therapymitral valvestroke

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Area of Science:

  • Cardiology
  • Cardiac Surgery
  • Neurology

Background:

  • The left atrial appendage (LAA) is a primary source of embolic events, particularly stroke, in patients with atrial fibrillation.
  • Effective LAA closure is crucial, as incomplete closure significantly elevates stroke risk.
  • Current guidelines recommend LAA closure during cardiac surgery, especially mitral valve surgery.

Purpose of the Study:

  • To introduce a novel, simple, and reproducible method for complete LAA closure during mitral valve surgery.
  • To evaluate the safety and efficacy of this technique in preventing thromboembolic events.

Main Methods:

  • Development of a unique surgical technique for complete LAA closure.
  • Application of the technique during mitral valve surgery in three patients.
  • Long-term follow-up to assess for stroke and neurological events.

Main Results:

  • The developed LAA closure method was successfully implemented in all three patients.
  • Patients remained completely free from stroke and transient neurological manifestations for 27 months post-surgery.
  • The technique proved to be safe and efficacious in preventing LAA-related embolism.

Conclusions:

  • This new method ensures complete LAA closure during mitral valve surgery, a critical step in stroke prevention for atrial fibrillation patients.
  • The technique is safe, reproducible, and effective in reducing the risk of stroke and embolism.
  • Minimally invasive LAA closure represents a significant advancement in cardiac surgery for managing atrial fibrillation-related stroke risk.