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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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Multiple treatment comparisons in epilepsy monotherapy trials.

Catrin Tudur Smith1, Anthony G Marson, David W Chadwick

  • 1Centre for Medical Statististcs and Health Evaluation, University of Liverpool, Liverpool, UK. cat1@liv.ac.uk

Trials
|November 7, 2007
PubMed
Summary

For partial onset seizures, carbamazepine, oxcarbazepine, and lamotrigine offer the best balance of seizure control and treatment success. Valproate and phenytoin are favored for generalized onset tonic clonic seizures.

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Area of Science:

  • Neurology
  • Pharmacology
  • Clinical Trials

Background:

  • Optimal antiepileptic drug (AED) selection requires high-quality evidence on benefits and harms.
  • Systematic reviews and meta-analyses of randomized controlled trials (RCTs) are crucial for informed treatment decisions.
  • This study synthesizes individual patient data from RCTs comparing eight AEDs in monotherapy.

Purpose of the Study:

  • To compare the efficacy and safety of eight antiepileptic drugs (AEDs) in monotherapy using individual patient data from RCTs.
  • To identify AEDs offering the best balance of seizure control and treatment failure for different epilepsy types.
  • To provide evidence-based guidance for selecting AEDs in clinical practice.

Main Methods:

  • Individual patient data from 20 RCTs involving 6418 patients were analyzed.
  • A single stratified Cox regression model incorporated direct and indirect treatment comparisons.
  • Primary outcomes included time to treatment failure and time to 12-month seizure remission; time to first seizure was a secondary outcome.

Main Results:

  • For partial onset seizures (n=4628), lamotrigine, carbamazepine, and oxcarbazepine demonstrated the best combination of seizure control and low treatment failure rates.
  • Lamotrigine showed superior treatment failure rates but potentially less efficacy in 12-month remission and time to first seizure compared to carbamazepine.
  • Phenobarbital may delay the first seizure but significantly increases treatment failure.
  • For generalized onset tonic clonic seizures (n=1790), valproate and phenytoin appear most effective, though relative effectiveness of other drugs requires further clarification.

Conclusions:

  • Carbamazepine, oxcarbazepine, and lamotrigine are recommended for patients with partial onset seizures.
  • Valproate and phenytoin are favored for patients experiencing generalized onset tonic clonic seizures.
  • Evidence supports individualized AED selection based on seizure type and drug-specific efficacy and safety profiles.