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Related Concept Videos

Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

92
Left heart catheterization is an invasive diagnostic procedure used to evaluate the function and structure of the left side of the heart. It is generally performed to diagnose and treat cardiovascular conditions such as valve abnormalities, coronary artery disease, and congenital heart defects.Diagnostic and therapeutic purposesLeft heart catheterization serves various diagnostic and therapeutic purposes, including:Assessing coronary artery bypass grafts.Evaluating coronary artery disease in...
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Outcomes of percutaneous left atrial appendage occlusion device implantation in atrial fibrillation patients based on underlying stroke risk.

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Related Experiment Video

Updated: Jul 29, 2025

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

Gordon X Wong1, Gagan D Singh1

  • 1University of California, Davis Medical Center, Sacramento, California, US.

Methodist Debakey Cardiovascular Journal
|May 22, 2023
PubMed
Summary
This summary is machine-generated.

Transcatheter left atrial appendage closure (LAAC) offers a safe alternative for patients with atrial fibrillation who cannot use blood thinners. Newer devices and ongoing trials are expanding its role in stroke prevention.

Keywords:
anticoagulation intoleranceatrial fibrillationdual antiplatelet therapyintracardiac echocardiographyleft atrial appendage occlusionpercutaneous left atrial appendage closure

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Medical Devices

Background:

  • Atrial fibrillation (AF) is a common arrhythmia, increasing stroke risk.
  • Many AF patients cannot tolerate oral anticoagulation (OAC) due to bleeding risks or contraindications.
  • Transcatheter left atrial appendage closure (LAAC) emerged as an alternative to OAC for stroke risk reduction.

Purpose of the Study:

  • To review current indications and evidence for transcatheter LAAC therapies.
  • To discuss newer generation LAAC devices and their clinical trial data.
  • To examine challenges in LAAC procedures and post-implantation care.

Main Methods:

  • Review of contemporary clinical trials and evidence for transcatheter LAAC devices.
  • Analysis of safety and efficacy data for devices like Watchman FLX and Amulet.
  • Discussion of procedural imaging and antithrombotic regimen controversies.

Main Results:

  • Transcatheter LAAC has demonstrated safety and efficacy in patients intolerant to OAC.
  • Newer devices show promise, with large trials supporting their use.
  • Ongoing research aims to define LAAC's role in broader AF populations.

Conclusions:

  • Transcatheter LAAC is a viable alternative for stroke prevention in nonvalvular AF patients unsuitable for OAC.
  • Further research, including ongoing trials, will clarify LAAC's potential as a first-line therapy.
  • Addressing procedural and post-implantation challenges is key to optimizing LAAC outcomes.