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Updated: Sep 12, 2025
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Catheter Ablation in Combination With Left Atrial Appendage Closure for Atrial Fibrillation
Published on: February 26, 2013
33.5K
SCAI/HRS technical review on transcatheter left atrial appendage occlusion
Edmond M Cronin1, Steven Filby2, Michael E Field3
1Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania.
Heart Rhythm
|August 4, 2025
Summary
Left atrial appendage occlusion (LAAO) offers an effective stroke prevention alternative for nonvalvular atrial fibrillation (NVAF) patients unable to use oral anticoagulation. Further research is needed to optimize imaging and post-procedure care for LAAO.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Devices
Background:
- Nonvalvular atrial fibrillation (NVAF) increases stroke risk via left atrial appendage (LAA) thrombi.
- Oral anticoagulation (OAC) is standard but carries bleeding risks.
- Percutaneous LAA occlusion (LAAO) is an alternative, but practice varies.
Purpose of the Study:
- To systematically review evidence on LAAO for stroke prevention in NVAF.
- To inform new clinical guidelines for LAAO procedures.
- To address variability in patient selection, imaging, and management.
Main Methods:
- Systematic review of PubMed, Embase, and Cochrane Library up to January 2024.
- Included studies on percutaneous LAAO in adults with NVAF.
- Excluded surgical LAAO and non-US marketed devices.
- Used meta-analysis, narrative synthesis, and RoB/CERTAINTY assessments.
Main Results:
- 27 studies met eligibility criteria from 3769 titles/abstracts.
- Analyzed LAAO outcomes for stroke prevention versus OAC and no therapy.
- Examined preprocedure imaging, intraprocedure guidance, and postprocedure antithrombotic regimens.
Conclusions:
- LAAO is effective for stroke prevention in NVAF patients with bleeding risks.
- Uncertainties persist regarding optimal imaging strategies.
- Further clarification is needed for postprocedural management protocols.
