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Microcirculation No-Reflow Phenomenon after Acute Ischemic Stroke.

Jiaqi Hu1, Ding Nan2, Yuxuan Lu3

  • 1Department of Neurology, Peking University First Hospital, Beijing, China, hujiaqi911@pku.edu.cn.

European Neurology
|January 8, 2023
PubMed
Summary

The no-reflow phenomenon hinders brain microcirculation recovery after stroke, even with artery opening. Effective treatments are needed to improve patient outcomes by addressing this critical issue.

Keywords:
Acute ischemic strokeMicrocirculationNo-reflowReperfusion

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Area of Science:

  • Neuroscience
  • Cardiovascular Medicine
  • Stroke Research

Background:

  • The no-reflow phenomenon, a failure of cerebral microcirculation restoration after large artery recanalization in acute ischemic stroke, has been recognized for over 50 years.
  • It involves complex endovascular, vascular wall, and extravascular factors impacting patient outcomes.

Purpose of the Study:

  • To review the occurrence and impact of the no-reflow phenomenon in ischemic stroke.
  • To discuss current detection methods and therapeutic strategies for improving cerebral microcirculation.
  • To highlight the urgent need for novel treatments to enhance outcomes after recanalization therapies.

Main Methods:

  • Review of existing experimental and clinical data on the no-reflow phenomenon.
  • Analysis of mechanisms contributing to impaired microcirculation.
  • Evaluation of clinical tools for assessing cerebral microvascular hemodynamics.

Main Results:

  • Clinical outcomes correlate better with reperfusion status than recanalization alone in ischemic stroke patients.
  • Effective treatments for restoring cerebral microcirculation remain largely unestablished.
  • There is a critical need for novel therapeutic approaches.

Conclusions:

  • The no-reflow phenomenon significantly impacts stroke recovery.
  • Improved detection and effective therapeutic strategies are crucial for addressing impaired cerebral microcirculation.
  • Further research into novel treatments is essential to improve patient outcomes post-stroke.