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Misuse of antithrombotic therapy in atrial fibrillation patients: frequent, pervasive and persistent

Luciana S Fornari1, Daniela Calderaro, Ivana B Nassar

  • 1Heart Institute, University of Sao Paulo Medical School, Sao Paulo, Brazil. luciana.fornari@uol.com.br

Journal of Thrombosis and Thrombolysis
|December 23, 2006
PubMed

Insights

Antithrombotic therapy, including anticoagulation, is underused in atrial fibrillation (AF) patients. Even at a specialized heart hospital, care for AF patients did not significantly improve over one year.

Area of Science:

  • Cardiology
  • Thrombosis Research
  • Public Health

Background:

  • Atrial fibrillation (AF) is a common arrhythmia associated with a high risk of thromboembolic events.
  • Optimal antithrombotic therapy is crucial for stroke prevention in AF patients.
  • Current guidelines recommend anticoagulation for most AF patients.

Purpose of the Study:

  • To evaluate the prescription patterns of antithrombotic therapy in patients with atrial fibrillation (AF).
  • To assess the utilization of anticoagulant therapy (ACT) and antiplatelet agents in a Brazilian University Heart Hospital.
  • To determine if specialized care improves antithrombotic management in AF.

Main Methods:

  • A cross-sectional study analyzing patient charts from a Brazilian University Heart Hospital (InCor).
  • Two phases of data collection: initial assessment (Phase 1) and 1-year follow-up (Phase 2).
  • Prevalence of AF and prescription rates of antithrombotic therapies were recorded.

Main Results:

  • Atrial fibrillation was present in 8.0% of 3,764 assessed patient charts.
  • A significant proportion of AF patients (32.2% in Phase 1, 22.2% in Phase 2) received no antithrombotic therapy.
  • Among AF patients with prior ischemic stroke, only 49% (Phase 1) and 60.4% (Phase 2) received ACT, with many remaining untreated.

Conclusions:

  • Anticoagulation is underutilized in atrial fibrillation patients, even in specialized cardiac centers.
  • One year of follow-up and treatment at a university heart hospital did not significantly enhance antithrombotic care for AF patients.
  • There is a critical need to improve adherence to guidelines for antithrombotic therapy in AF to reduce stroke risk.
Abstract

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