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The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
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Percutaneous Left Atrial Appendage Closure: Supporting Evidence, Limitations and Future Directions

Giuseppe Imperatore1, Stijn Lochy2, Mohamed Ben Yedder3

  • 1Health Science Interdisciplinary Centre, Sant'Anna School of Advanced Studies, 56127 Pisa, Italy.

Journal of Clinical Medicine
|April 12, 2025
PubMed

Insights

Percutaneous Left Atrial Appendage Occlusion (LAAO) offers a stroke prevention alternative for atrial fibrillation patients unable to use anticoagulants. This review evaluates LAAO

Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Device Technology

Background:

  • Atrial fibrillation (AF) poses a significant stroke risk, often managed with anticoagulation.
  • Long-term anticoagulation is contraindicated for some AF patients.
  • Percutaneous Left Atrial Appendage Occlusion (LAAO) has emerged as an alternative stroke prevention strategy.

Purpose of the Study:

  • To comprehensively review the efficacy and safety of the LAAO procedure.
  • To consolidate existing evidence from clinical trials and real-world studies.
  • To identify limitations in current LAAO research and outline future directions.

Main Methods:

  • Systematic review of published clinical trials and real-world data on LAAO.
  • Analysis of procedural success rates, safety outcomes, and long-term efficacy.
  • Evaluation of patient selection criteria, procedural techniques, and follow-up protocols.

Main Results:

  • LAAO demonstrates promising efficacy in stroke prevention for select AF patients.
  • Safety profiles are generally favorable, with specific procedural risks identified.
  • Variability exists in patient selection, techniques, and follow-up, impacting outcome interpretation.

Conclusions:

  • LAAO is a viable stroke prevention option for patients with contraindications to anticoagulation.
  • Further research is needed to standardize protocols and optimize patient selection.
  • Addressing current knowledge gaps will enhance the therapeutic potential of LAAO.

Keywords:
atrial fibrillationdeviceleft atrial appendage closurestroke prevention

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