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Related Experiment Videos

Chronic periodic lateralized epileptiform discharges.

B F Westmoreland, D W Klass, F W Sharbrough

    Archives of Neurology
    |May 1, 1986
    PubMed
    Summary

    Chronic epilepsy patients can exhibit persistent periodic lateralized epileptiform discharges (PLEDs) even with long-standing seizure disorders or chronic brain lesions, challenging previous assumptions about their acute nature.

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    Area of Science:

    • Neurology
    • Epileptology
    • Clinical Neurophysiology

    Background:

    • Periodic lateralized epileptiform discharges (PLEDs) are typically associated with acute or subacute disturbances in brain function.
    • Understanding the long-term implications and varied presentations of PLEDs is crucial for epilepsy management.

    Observation:

    • This study observed six patients with chronic epilepsy presenting with persistent PLEDs during interictal periods.
    • Patient seizure types included complex partial seizures, infantile spasms, and multifocal seizures.
    • Cerebral pathologies identified in four patients were tuberous sclerosis, a porencephalic cyst, and a chronic brain abscess.

    Findings:

    • The presence of chronic PLEDs in patients with established epilepsy and chronic brain lesions was confirmed.
    • This challenges the conventional view that PLEDs are exclusively indicative of acute cerebral insults.

    Implications:

    • The findings suggest that chronic PLEDs can be a feature of long-standing epilepsy and chronic brain abnormalities.
    • This expands the diagnostic considerations for PLEDs in clinical neurophysiology and epilepsy care.
    • Further research may elucidate the specific mechanisms and prognostic significance of chronic PLEDs.

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