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A Thrombotic Stroke Model Based On Transient Cerebral Hypoxia-ischemia
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Role of cerebral microbleeds in acute ischemic stroke and atrial fibrillation

Meng Wang1, Yuyuan Yang1, Moxin Luan1

  • 1Department of Geriatric Medicine, The Affiliated Hospital of Qingdao University, No.16 Jiangsu Road, Qingdao, 266001, Shandong, China.

Journal of Thrombosis and Thrombolysis
|December 26, 2022
PubMed

Insights

Cerebral microbleeds (CMBs) increase risks in acute ischemic stroke (AIS) patients, especially with atrial fibrillation (AF). This review clarifies CMBs

Area of Science:

  • Neurology
  • Neuroimaging
  • Cardiology

Background:

  • Cerebral microbleeds (CMBs) are increasingly detected in acute ischemic stroke (AIS) patients via advanced neuroimaging.
  • CMBs significantly elevate risks of hemorrhagic transformation and intracranial hemorrhage in AIS, particularly when co-occurring with atrial fibrillation (AF).
  • The prognostic impact of CMBs in AIS remains controversial, with some studies indicating no significant effect on patient outcomes.

Purpose of the Study:

  • To review the role of CMBs in AIS patients with concurrent AF.
  • To summarize preventive strategies against recurrent stroke and intracerebral hemorrhage in this population.
  • To clarify drug therapies for patients with AIS, CMBs, and AF, addressing current guideline gaps.

Main Methods:

  • Literature review of studies on cerebral microbleeds in acute ischemic stroke.
  • Analysis of the association between CMBs and outcomes in patients with atrial fibrillation.
  • Synthesis of evidence regarding secondary stroke prevention and hemorrhage risk management.

Main Results:

  • CMBs are associated with increased hemorrhagic risk and potentially recurrent stroke in AIS patients, especially those with AF.
  • Controversy exists regarding CMBs' impact on AIS prognosis.
  • Current treatment guidelines lack specific recommendations for managing anticoagulation in patients with AIS, CMBs, and AF.

Conclusions:

  • Cerebral microbleeds present complex challenges in managing acute ischemic stroke patients with atrial fibrillation.
  • Further research and clear guidelines are needed for optimal secondary prevention and pharmacological treatment in this high-risk group.
  • Understanding CMBs' role is crucial for tailoring treatments to reduce stroke recurrence and hemorrhage risk.
Keywords:
Antithrombotic treatmentAtrial fibrillationCerebral microbleedsIschemic strokeSecondary prevention

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