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Cryptogenic stroke: how to define it? How to treat it?

Ava L Liberman1, Shyam Prabhakaran

  • 1Department of Neurology, Northwestern University-Feinberg School of Medicine, 710 N. Lakeshore Drive, Abbott Hall-Suite 1417, Chicago, IL, 60611, USA.

Current Cardiology Reports
|October 10, 2013
PubMed

Insights

Cryptogenic strokes (CS) are a significant cause of ischemic stroke, often lacking targeted prevention strategies. Further research and standardized diagnostic approaches are crucial for managing CS patients and preventing recurrent events.

Area of Science:

  • Neurology
  • Cardiology
  • Vascular Medicine

Background:

  • Stroke is a major global cause of disability.
  • Cryptogenic strokes (CS) constitute nearly 25% of ischemic strokes, even after thorough evaluation.
  • A clear definition and categorization of CS are needed for better understanding.

Purpose of the Study:

  • To emphasize the need for a working definition of cryptogenic strokes.
  • To highlight the heterogeneity of CS and the importance of mechanistic categories.
  • To underscore the lack of targeted recurrent stroke prevention strategies for CS.

Main Methods:

  • Review of current stroke classification systems.
  • Analysis of mechanistic categories for CS (e.g., paradoxical embolism, vascular disease, arrhythmia).
  • Evaluation of existing clinical trial data and ongoing research.

Main Results:

  • Cryptogenic strokes represent a substantial portion of ischemic strokes, posing diagnostic challenges.
  • Mechanistic categories can help classify the diverse causes within the CS subtype.
  • Current prevention strategies, such as patent foramen ovale closure, show limited benefit in CS.

Conclusions:

  • A standardized approach is essential for diagnosing and managing cryptogenic stroke patients.
  • Further research and clinical trials are needed to develop effective diagnostic and therapeutic strategies for CS.
  • Improved understanding and management of CS are critical for reducing stroke-related disability.

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