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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation

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Mechanical antithrombotic intervention by LAA occlusion in atrial fibrillation

Cheuk-Man Yu1, Ahmed A Khattab, Stefan C Bertog

  • 1Division of Cardiology, Department of Medicine and Therapeutics, Institute of Vascular Medicine, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong SAR, China.

Nature Reviews. Cardiology
|October 23, 2013
PubMed

Insights

Left atrial appendage occlusion offers a novel stroke prevention strategy for atrial fibrillation (AF) patients, particularly those at high bleeding risk. This transcatheter approach targets the primary source of thrombi, providing a non-pharmacological alternative to anticoagulation.

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Devices

Background:

  • Stroke in atrial fibrillation (AF) patients causes significant morbidity and mortality.
  • Warfarin, a traditional oral anticoagulant, has limitations including monitoring needs and bleeding risks.
  • Newer oral anticoagulants offer alternatives, but non-pharmacological options are sought for high-hemorrhage-risk patients.

Purpose of the Study:

  • To review the rationale for left atrial appendage (LAA) occlusion in AF stroke prevention.
  • To discuss available LAA occlusion devices and their clinical evidence.
  • To explore imaging techniques and complication management for LAA occlusion.

Main Methods:

  • Review of existing literature on LAA occlusion for stroke prevention in AF.
  • Analysis of clinical evidence for various LAA occlusion devices.
  • Discussion of imaging modalities and procedural complication management.

Main Results:

  • The left atrial appendage (LAA) is the source of over 90% of thrombi in nonvalvular AF.
  • Transcatheter LAA occlusion is a novel therapeutic target for stroke prevention.
  • Various occlusion devices and their clinical data are presented.

Conclusions:

  • LAA occlusion presents a promising non-pharmacological stroke prevention strategy for select AF patients.
  • Understanding device options, imaging guidance, and complication management is crucial for successful implantation.
  • This approach offers an alternative for patients unsuitable for long-term oral anticoagulation.

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