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Related Experiment Video

Updated: Dec 27, 2025

Performing Permanent Distal Middle Cerebral with Common Carotid Artery Occlusion in Aged Rats to Study Cortical Ischemia with Sustained Disability
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Carotid Revascularization and Its Effect on Cognitive Function: A Prospective Nonrandomized Multicenter Clinical

Jenna L Whooley1, Brandon C David1, Henry H Woo2

  • 1Department of Neurosurgery, Lahey Hospital and Medical Center, Burlington, Massachusetts.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
|February 29, 2020
PubMed
Summary

Carotid revascularization improves executive function in patients with asymptomatic carotid stenosis. Enhanced cerebral blood flow, particularly in the middle cerebral artery (MCA), correlates with better cognitive outcomes.

Keywords:
Carotid artery stenosiscarotid endarterectomycarotid stentcerebrovascular diseasecognitive impairmentexecutive function

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Area of Science:

  • Neuroscience
  • Vascular Surgery
  • Cognitive Science

Background:

  • Conflicting data exists regarding the impact of carotid revascularization on cognitive function.
  • Asymptomatic carotid artery stenosis poses a risk for cerebrovascular events and potential cognitive decline.

Purpose of the Study:

  • To investigate the relationship between carotid revascularization, cerebral blood flow, and cognitive function.
  • To assess changes in executive functioning following carotid revascularization in patients with asymptomatic stenosis.

Main Methods:

  • Patients with 80% asymptomatic carotid stenosis underwent revascularization (endarterectomy or stenting) or medical management.
  • Cerebral blood flow (middle cerebral artery - MCA) was quantified using phase contrast magnetic resonance angiography pre- and post-procedure.
  • Cognitive function, specifically executive function (Trails B), was assessed at baseline, 1 month, and 6-12 months.

Main Results:

  • Carotid revascularization significantly improved executive function (Trails B scores) compared to medical management.
  • Patients demonstrating improved MCA blood flow showed a significantly higher rate of executive function improvement.
  • Enhanced MCA flow was associated with a greater absolute improvement in executive function scores.

Conclusions:

  • Carotid revascularization in asymptomatic carotid stenosis is linked to enhanced executive functioning.
  • Improved middle cerebral artery (MCA) blood flow following revascularization is a key factor associated with cognitive gains.