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Related Experiment Videos

Is the EEG really normal in lacunar stroke?

L J Kappelle1, A C van Huffelen, J van Gijn

  • 1University Department of Clinical, Neurophysiology and Neurology, University Hospital Utrecht, The Netherlands.

Journal of Neurology, Neurosurgery, and Psychiatry
|January 1, 1990
PubMed
Summary

Electroencephalography (EEG) shows specific abnormalities in most patients with recent lacunar infarction. This study found EEG has good diagnostic accuracy for lacunar stroke, contrasting with prior research.

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Area of Science:

  • Neuroscience
  • Neurology
  • Medical Imaging

Background:

  • Lacunar infarcts are small strokes often diagnosed using CT scans.
  • Previous studies suggested limited utility of electroencephalography (EEG) in diagnosing lacunar infarction.
  • Accurate and timely diagnosis of stroke subtypes is crucial for appropriate patient management.

Purpose of the Study:

  • To evaluate the diagnostic accuracy and specificity of EEG in identifying recent lacunar infarction.
  • To compare EEG findings with CT scan results in patients with different stroke types.

Main Methods:

  • EEG recordings were analyzed visually and computationally in 12 patients with recent lacunar infarcts, 12 with cortical infarcts, and 12 controls.
  • Patients were assessed under eyes closed and eyes open conditions.

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  • EEG results were compared with CT scan findings, blinded to clinical data.

    • Main Results:

    • EEG demonstrated a sensitivity and specificity of 0.8 for diagnosing lacunar infarction.
    • The positive predictive value of EEG for lacunar infarct diagnosis was 0.7.
    • The chance-corrected agreement (kappa) between EEG and CT was 0.75, indicating good concordance.

    Conclusions:

    • Contrary to previous findings, this study indicates that EEG reveals specific abnormalities in most patients with recent lacunar infarction.
    • EEG shows promising diagnostic value for lacunar stroke, complementing CT imaging.
    • Further research may explore the integration of EEG in stroke diagnostic protocols.