Fractional Flow in Cerebrovascular Disorders
David S Liebeskind1, Edward Feldmann
1UCLA Stroke Center, Los Angeles, CA, USA.
Interventional Neurology
|June 5, 2013
Summary
Current stroke care focuses on outdated anatomical measures, leading to poor patient selection. Adopting hemodynamic parameters, like fractional flow, can improve the identification of critical lesions and guide advanced stroke treatments.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Medical Technology
Background:
- Traditional stroke care relies on anatomical stenosis measurements, which are insufficient for identifying high-risk lesions.
- Current acute ischemic stroke management, focused on time and complete revascularization, overlooks critical lesion characteristics and pathophysiology.
- This approach hinders understanding of ischemia, reperfusion, and related complications, impeding treatment advancements.
Purpose of the Study:
- To highlight the limitations of current stroke care paradigms.
- To advocate for a shift towards hemodynamic and pathophysiological assessments in cerebrovascular disease management.
- To introduce fractional flow as a key hemodynamic parameter for guiding stroke patient care.
Main Methods:
- Critique of traditional anatomical stenosis assessment in stroke.
- Comparison of current stroke care with advancements in cardiology.
- Introduction of hemodynamic principles, specifically fractional flow, for cerebrovascular evaluation.
Main Results:
- Anatomical stenosis measurements inadequately predict recurrent ischemia and lead to suboptimal patient selection.
- Current acute stroke protocols fail to account for lesion nature and degree, complicating understanding of reperfusion dynamics.
- Hemodynamic and pathophysiological approaches, analogous to cardiology, are proposed as superior guides for stroke care advancement.
Conclusions:
- A paradigm shift in stroke care is urgently needed, moving from anatomical to hemodynamic and pathophysiological assessments.
- Fractional flow is proposed as a critical hemodynamic parameter to guide the advancement of stroke patient care.
- Implementing these new approaches will enhance lesion identification, improve patient selection, and facilitate the development of more effective stroke treatments.
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