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Early Nonprocedural Bleeding After Left Atrial Appendage Occlusion.

Jules Mesnier1, Ignacio Cruz-González2, Paul Guedeney3

  • 1Quebec Heart and Lung Institute, Laval University, Quebec City, Quebec, Canada.

JACC. Cardiovascular Interventions
|July 18, 2024
PubMed
Summary
This summary is machine-generated.

Early nonprocedural bleeding after left atrial appendage occlusion (LAAO) affects 7% of patients and increases mortality risk. Dual antiplatelet therapy at discharge is a key predictor, highlighting the need for careful antithrombotic strategy selection.

Keywords:
anticoagulantatrial fibrillationbleedingleft atrial appendage occlusion

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Area of Science:

  • Cardiology
  • Interventional Cardiology
  • Thrombosis Research

Background:

  • Patients undergoing left atrial appendage occlusion (LAAO) face a high risk of bleeding.
  • Intensive antithrombotic therapy is crucial post-LAAO to prevent device-related thrombosis.

Purpose of the Study:

  • To determine the incidence, consequences, and predictors of early nonprocedural bleeding following LAAO.
  • To assess the impact of early bleeding on patient outcomes.

Main Methods:

  • Multicenter study involving 1,649 patients who underwent LAAO.
  • Early nonprocedural bleeding defined as events within 3 months post-implantation, assessed using Valve Academic Research Consortium-2 criteria.
  • Sensitivity analysis conducted at 45 days.

Main Results:

  • 121 patients (7.3%) experienced early nonprocedural bleeding, with 57% classified as major.
  • Predictors included dual antiplatelet therapy (DAPT) at discharge, prior gastrointestinal bleeding, and multiple prior bleeding sites.
  • Early nonprocedural bleeding independently predicted increased all-cause mortality (aHR: 1.53).

Conclusions:

  • Early nonprocedural bleeding occurs in approximately 7% of LAAO patients within 3 months, often major, and is linked to higher mortality.
  • DAPT at discharge significantly increases the risk of early nonprocedural bleeding.
  • These findings underscore the critical role of bleeding risk assessment in guiding antithrombotic strategies post-LAAO.