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Updated: Nov 23, 2025

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

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

Published on: February 26, 2013

Percutaneous left atrial appendage closure.

Marek Hozman, Pavel Osmančík

Vnitrni Lekarstvi

|December 31, 2020

Summary

Atrial fibrillation increases stroke risk. Percutaneous left atrial appendage closure offers an alternative to oral anticoagulation for preventing cardiac embolic events, especially in patients with bleeding risks.

Area of Science:

Cardiology
Medical Devices
Vascular Medicine

Background:

Atrial fibrillation is a major risk factor for stroke due to cardiac embolism.
Oral anticoagulation is the standard therapy for preventing these embolic events.
However, oral anticoagulation is contraindicated in some patients, particularly those with a history of serious bleeding.

Purpose of the Study:

To review the physiology and pathophysiology of the left atrial appendage.
To discuss percutaneous left atrial appendage closure as an alternative stroke prevention strategy.
To outline the indications and scientific rationale for left atrial appendage closure devices.

Main Methods:

Literature review of studies on atrial fibrillation, stroke, anticoagulation, and left atrial appendage closure.

Keywords:

atrial fibrillation left auricle occlusion stroke

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Last Updated: Nov 23, 2025

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Analysis of the anatomical and physiological aspects of the left atrial appendage.

Evaluation of existing percutaneous left atrial appendage closure devices and their clinical evidence.

Main Results:

The left atrial appendage is a primary source of thrombus formation in atrial fibrillation.
Percutaneous left atrial appendage closure devices effectively exclude the appendage, reducing embolism risk.
Various devices are available, each with specific implantation techniques and patient selection criteria.

Conclusions:

Percutaneous left atrial appendage closure is a viable alternative to oral anticoagulation for stroke prevention in high-risk atrial fibrillation patients.
Careful patient selection based on bleeding risk and anatomical suitability is crucial for successful outcomes.
Continued research and device development are expanding the role of left atrial appendage closure in managing atrial fibrillation-related stroke risk.