[Percutaneous left atrial appendage closure for stroke prevention in atrial fibrillation: is left atrial appendage

Lucas V A Boersma1,2, Benno J W M Rensing1, Lisette I Wintgens1

  • 1St. Antonius Ziekenhuis, afd. Cardiologie, Nieuwegein.

Insights

Left atrial appendage closure is a safe and effective stroke prevention method for atrial fibrillation patients, offering an alternative to oral anticoagulation with reduced bleeding risks.

Area of Science:

  • Cardiology
  • Interventional Cardiology

Background:

  • The left atrial appendage (LAA) is a primary source of cardioembolic stroke in atrial fibrillation (AF) patients.
  • Oral anticoagulation (OAC) is effective for stroke prevention in AF but carries bleeding risks and compliance issues.

Purpose of the Study:

  • To evaluate percutaneous left atrial appendage closure as an alternative to OAC for stroke prevention in AF.
  • To assess the safety and efficacy of LAA closure devices, such as the WATCHMAN device.

Main Methods:

  • Review of randomized trials and prospective registry studies comparing LAA closure with OAC.
  • Analysis of stroke prevention rates and bleeding complications associated with LAA closure.

Main Results:

  • LAA closure is non-inferior to OAC for stroke prevention.
  • LAA closure demonstrates a reduction in bleeding events compared to OAC.
  • Registry studies confirm LAA closure as a viable alternative for patients with OAC contraindications.

Conclusions:

  • Percutaneous LAA closure is a safe and effective alternative to OAC for stroke prevention in AF patients, particularly those at high risk of bleeding.
  • Ongoing research aims to further optimize LAA closure techniques and compare them with newer anticoagulant therapies.

Related Concept Videos

Surface Appendages of Archaea01:23

Surface Appendages of Archaea

Archaeal surface appendages are highly specialized structures essential for environmental adaptation, encompassing roles in adhesion, biofilm formation, and motility. Among these appendages, pili and archaella stand out for their distinct morphologies and functionalities, enabling archaea to thrive in diverse and often extreme environments.Pili: Adhesion and Biofilm FormationPili are filamentous structures assembled from pilin protein subunits, primarily contributing to adhesion and biofilm...
675
ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias01:25

ECG Interpretation of Arrhythmias II: Atrial, Junctional and Ventricular Arrhythmias

Arrhythmia is a condition characterized by an irregular heart rhythm, with ECG changes that differ based on its origin and nature. The types of arrhythmias discussed below include atrial, junctional, and ventricular arrhythmias.Atrial ArrhythmiasPremature Atrial Complexes (PACs): PACs are early atrial beats caused by stress, caffeine, alcohol, electrolyte imbalances, hypoxia, hyperthyroidism, or certain medications (e.g., bronchodilators and decongestants). The ECG shows early P waves with an...
587
Angle Closure Glaucoma: Treatment01:28

Angle Closure Glaucoma: Treatment

Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
1.3K
Amyloid Fibrils03:03

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins.  Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils. 
Amyloid deposits were observed as early as 1639 in the liver and the spleen.   In 1854, Rudolph Virchow performed iodine staining,...
12.0K
Amyloid Fibrils03:03

Amyloid Fibrils

6.5K
Cardiac Catheterization III: Left Heart Catheterization01:24

Cardiac Catheterization III: Left Heart Catheterization

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...
751