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Related Concept Videos

Electroconvulsive Therapy01:30

Electroconvulsive Therapy

Electroconvulsive therapy (ECT), or shock therapy, remains a critical biomedical intervention for severe, treatment-resistant depression. While its origins can be traced back to Hippocrates' observations that malaria-induced convulsions alleviated mental illness, modern ECT has evolved significantly from its earlier, more primitive applications. First introduced in 1938 by Ugo Cerletti and his colleagues, ECT involves inducing controlled seizures using electrical currents. In its early years,...

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Electrocorticogram changes during corpus callosotomy for uncontrolled symptomatic generalized epilepsy.

Hann-Yeh Shyu1, Ji-Ho Lin, Shang-Yeong Kwan

  • 1Section of Neurology, Department of Medicine, Armed Forces Taoyuan General Hospital, Tao-Yuan County, Taiwan.

Journal of Clinical Neuroscience : Official Journal of the Neurosurgical Society of Australasia
|October 30, 2009
PubMed
Summary

This study found that electrocorticogram (ECoG) seizures after anterior callosotomy do not predict poor outcomes for epilepsy patients. Surgical intervention can still reduce seizure frequency and severity.

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Area of Science:

  • Neurology
  • Neurosurgery
  • Epileptology

Background:

  • Medically intractable epilepsy presents significant challenges.
  • Generalized tonic-clonic seizures (GTCs) can originate focally.
  • Anterior callosotomy is a surgical option for refractory epilepsy.

Observation:

  • A 19-year-old male with an 11-year history of intractable GTCs underwent anterior callosotomy.
  • Pre-sectioning electrocorticogram (ECoG) showed no epileptiform discharges, but post-sectioning ECoG revealed over 10 left-sided seizures.
  • The patient experienced generalized seizures post-surgery, with reduced frequency and severity over 10 years.

Findings:

  • Post-operative ECoG findings of epileptiform discharges did not correlate with a poor surgical outcome.
  • The presence of ECoG seizures immediately after callosotomy may indicate epileptogenicity but not necessarily surgical failure.
  • Anterior callosotomy can lead to long-term reduction in seizure severity and frequency.

Implications:

  • ECoG findings intraoperatively should be interpreted cautiously in the context of long-term epilepsy surgery outcomes.
  • This case challenges the predictive value of immediate post-operative ECoG findings for anterior callosotomy success.
  • Further research is needed to understand the nuances of ECoG interpretation in epilepsy surgery.