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Comprehensive Endovascular and Open Surgical Management of Cerebral Arteriovenous Malformations
14:58

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Published on: October 20, 2017

Intracranial cerebral revascularization.

D Bulters1, P Kirkpatrick

  • 1Department of Neurosurgery, Addenbrooke's Hospital, Cambridge, UK. dbulters@nhs.net

Journal of Neurosurgical Sciences
|May 31, 2011
PubMed
Summary
This summary is machine-generated.

Superficial temporal artery to middle cerebral artery bypass may help select stroke patients with hemodynamic insufficiency. Careful patient selection is crucial, as medical management is often preferred unless severe symptoms persist.

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Optimized Management of Endovascular Treatment for Acute Ischemic Stroke
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Published on: January 18, 2018

Area of Science:

  • Neurology
  • Neurosurgery
  • Vascular Surgery

Background:

  • Stroke is a complex condition with varied causes.
  • Hemodynamic insufficiency, where blood supply cannot meet demand, is a rare cause of stroke.
  • This insufficiency can be indicated by reduced cerebrovascular reactivity (CVR) or elevated oxygen extraction fraction (OEF).

Purpose of the Study:

  • To evaluate the effectiveness of superficial temporal artery to middle cerebral artery (STA-MCA) bypass surgery for stroke prevention.
  • To clarify the definitions of hemodynamic insufficiency and symptomatic patients in the context of intracranial revascularization.
  • To determine optimal patient selection criteria for STA-MCA bypass.

Main Methods:

  • Review of randomized studies on intracranial revascularization.
  • Assessment of hemodynamic insufficiency using OEF and CVR measurements.
  • Redefinition of 'symptomatic' to include patients with ongoing fluctuating symptoms post-carotid occlusion.

Main Results:

  • Intracranial revascularization has shown inconsistent benefits in reducing stroke rates.
  • Accurate demonstration of hemodynamic insufficiency requires OEF and CVR assessment.
  • A smaller subset of patients with ongoing symptoms and hemodynamic insufficiency may benefit from bypass surgery.

Conclusions:

  • STA-MCA bypass can augment cerebral blood flow but requires precise patient selection.
  • Medical management is generally preferred over surgery for most patients.
  • Surgery may be beneficial for carefully selected individuals with severe hemodynamic insufficiency and persistent symptoms.