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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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[Acute stroke thrombectomy: evidence and indications].

Mikito Hayakawa1

  • 1Division of Stroke Prevention and Treatment, Faculty of Medicine, University of Tsukuba.

Rinsho Shinkeigaku = Clinical Neurology
|February 1, 2019
PubMed
Summary

Stroke thrombectomy significantly improves outcomes for acute ischemic stroke patients with large vessel occlusion. This treatment is now a standard of care for eligible patients within established time windows.

Keywords:
acute ischemic strokecerebral large vessel occlusionthrombectomy

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Area of Science:

  • Neurology
  • Interventional Neuroradiology
  • Vascular Neurology

Background:

  • Large vessel occlusion (LVO) stroke is a leading cause of long-term disability.
  • Early reperfusion therapies are critical for improving functional outcomes in acute stroke.
  • Mechanical thrombectomy has emerged as a key treatment for LVO stroke.

Purpose of the Study:

  • To summarize the evidence supporting mechanical thrombectomy as a standard of care for acute ischemic stroke.
  • To highlight the key clinical trials that established the efficacy of thrombectomy.
  • To define patient criteria and time windows for optimal thrombectomy outcomes.

Main Methods:

  • Review of pivotal randomized controlled trials in endovascular stroke treatment.
  • Analysis of data from landmark trials including MR CLEAN, ESCAPE, EXTEND-IA, SWIFT PRIME, REVASCAT, DAWN, and DEFUSE3.
  • Evaluation of patient selection criteria based on stroke severity and imaging findings.

Main Results:

  • The initial five pivotal trials (2014-2015) demonstrated thrombectomy's benefit for anterior circulation LVO within 6 hours.
  • The DAWN and DEFUSE3 trials (2018) extended thrombectomy's efficacy to 16-24 hours for selected patients with clinical-imaging mismatch.
  • Thrombectomy significantly improved functional outcomes (e.g., modified Rankin Scale) compared to medical management.

Conclusions:

  • Mechanical thrombectomy is a proven, effective, and standard-of-care treatment for acute ischemic stroke with large vessel occlusion.
  • Patient selection based on validated criteria and timely treatment are crucial for successful thrombectomy.
  • Guidelines recommend thrombectomy for eligible acute stroke patients meeting top-tier evidence criteria.