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Quantitative Electroencephalography After Pediatric Anterior Circulation Stroke.

Brian L Appavu1,2, M'hamed H Temkit1, Stephen T Foldes1,2

  • 1Department of Neurosciences, Barrow Neurological Institute, Phoenix Children's Hospital, Phoenix, Arizona, U.S.A.; and.

Journal of Clinical Neurophysiology : Official Publication of the American Electroencephalographic Society
|January 8, 2021
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Summary

Quantitative EEG (QEEG) in pediatric stroke shows reduced alpha and beta power in injured hemispheres after ischemic stroke. Hemorrhagic stroke reveals a negative association between total power and blood pressure in injured regions.

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Area of Science:

  • Neuroscience
  • Pediatric Neurology
  • Medical Imaging

Background:

  • Pediatric acute stroke impacts brain function, necessitating advanced monitoring.
  • Quantitative EEG (QEEG) offers insights into brain electrical activity.
  • Understanding QEEG-hemodynamic relationships is crucial for managing pediatric stroke.

Purpose of the Study:

  • To investigate regional differences in QEEG characteristics post-pediatric acute stroke.
  • To explore associations between QEEG and hemodynamic parameters in affected children.

Main Methods:

  • Analyzed QEEG power bands (delta, theta, alpha, beta), alpha-delta ratio, total power, and spectral edge frequency.
  • Utilized multivariate dynamic structural equations modeling to compare hemispheres.
  • Correlated hemodynamic data (blood pressure, heart rate, oximetry) with adjacent QEEG in hemorrhagic stroke cases.

Main Results:

  • Ischemic stroke: Lower alpha, beta power, and spectral edge frequency in injured vs. uninjured hemispheres.
  • Hemorrhagic stroke: Inconsistent QEEG findings compared to ischemic stroke.
  • Hemorrhagic stroke: Negative association between total power and arterial blood pressure in injured regions.

Conclusions:

  • Reduced spectral edge frequency and alpha/beta power observed in injured hemispheres after pediatric ischemic stroke.
  • Negative association between total power and blood pressure noted in injured regions after pediatric hemorrhagic stroke.
  • Larger studies are required to elucidate QEEG patterns and hemodynamic links in pediatric stroke.