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Evaluation of cerebral function after carotid endarterectomy
P Uclés1, C Almárcegui, S Lorente
1Department of Clinical Neurophysiology, Miguel Servet Hospital, Zaragoza, Spain.
Summary
Quantitative electroencephalography (qEEG) reveals significant brain function improvements after carotid endarterectomy in patients with carotid stenosis. These changes correlate with cognitive function, supporting the procedure
Area of Science:
- Neurology
- Neurophysiology
Background:
- Neuroimaging lacks correlation with cerebral atrophy and blood flow in carotid stenosis.
- Intellectual gains post-carotid endarterectomy don't fully align with neuroimaging.
Purpose of the Study:
- To assess early postoperative changes in brain electrical activity and cognitive function.
- To evaluate the effectiveness of carotid endarterectomy using quantitative electroencephalography (qEEG).
Main Methods:
- Brain electrical activity mapping (qEEG) and psychological testing performed pre- and post-operatively.
- 28 patients with symptomatic, high-grade carotid stenosis underwent the assessments.
- Evaluated changes in EEG mean frequency and absolute theta power.
Main Results:
- Significant improvements in EEG mean frequency and absolute theta power observed post-surgery (p < 0.01).
- Mean frequency increased, and theta power decreased, particularly in frontal lobes, suggesting whole-brain perfusion changes.
- Cognitive tests (Mini-Mental, Set Test) positively correlated with qEEG findings.
Conclusions:
- Quantitative EEG demonstrates significant early postoperative improvement in cerebral function after carotid endarterectomy.
- qEEG is a valuable tool for assessing functional brain changes post-procedure.
- Results support the beneficial effects of endarterectomy on brain function.