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Related Experiment Videos

Cardioembolic stroke: an update.

José M Ferro1

  • 1Stroke Unit, Department of Neurology, Hospital de Santa Maria, Faculdade de Medicina de Lisboa, Lisbon, Portugal. jmferro@iscvt.com <jmferro@iscvt.com>

The Lancet. Neurology
|July 10, 2003
PubMed
Summary
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Cardioembolic stroke, often severe and recurrent, stems from heart conditions like atrial fibrillation. Identifying the source is key, yet anticoagulation is underutilized, with immediate treatment not always supported.

Area of Science:

  • Neurology
  • Cardiology
  • Internal Medicine

Background:

  • Cardioembolic stroke constitutes approximately 20% of ischemic strokes, often leading to severe outcomes and high recurrence rates.
  • Identifying the cardiac source of embolism is clinically challenging despite its predictability.

Purpose of the Study:

  • To review the challenges in diagnosing cardioembolic stroke and the current management strategies.
  • To highlight the underutilization of oral anticoagulation in non-valvular atrial fibrillation patients at risk for stroke.

Main Methods:

  • Literature review of diagnostic modalities including MRI, echocardiography, and Holter monitoring.
  • Analysis of treatment guidelines and evidence regarding anticoagulation and alternative therapies for cardioembolic stroke.

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Main Results:

  • Non-valvular atrial fibrillation is the most frequent cause of cardioembolic stroke.
  • Less than 50% of eligible atrial fibrillation patients receive recommended oral anticoagulation.
  • Diagnostic tools like advanced imaging and monitoring improve cardioembolism source identification.

Conclusions:

  • Effective management of cardioembolic stroke requires improved diagnosis and increased utilization of anticoagulation for atrial fibrillation.
  • Alternative antithrombotic strategies and definitive atrial fibrillation treatment offer potential benefits.
  • Routine immediate anticoagulation for acute cardioembolic stroke is not consistently supported by current evidence.