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Predictors of epilepsy surgery outcome: a meta-analysis.
1Laboratory of Neurological Disorders, Institute for Pharmacological Research Mario Negri, Via Eritrea, 62, 20157 Milan, Italy.
Epilepsy Research
|November 3, 2004
Summary
Epilepsy surgery can be effective for drug-resistant partial epilepsy. Factors like mesial temporal sclerosis, tumors, and abnormal MRIs predict better seizure remission, while post-operative discharges suggest a poorer outcome.
Area of Science:
- Neurosurgery
- Epileptology
- Clinical Neurology
Background:
- Epilepsy surgery offers potential efficacy for partial epilepsy unresponsive to medication.
- Patient selection for optimal surgical outcomes remains an area of uncertainty.
Purpose of the Study:
- To systematically review epilepsy surgery outcomes.
- To identify prognostic factors correlating with seizure remission post-surgery.
Main Methods:
- Systematic literature review of Medline-indexed studies (post-1984).
- Inclusion criteria: well-defined population/design, ≥30 patients, MRI in ≥90%, ≥1-year follow-up, seizure remission as outcome.
- Review of 47 eligible articles.
Main Results:
- Positive predictors for seizure remission included: febrile seizures, mesial temporal sclerosis, tumors, abnormal MRI, EEG/MRI concordance, and extensive surgical resection.
- Negative predictors for seizure remission included: post-operative discharges and intracranial monitoring.
- Certain factors like extent of resection, EEG/MRI concordance, and post-operative discharges require further investigation due to study heterogeneity.
Conclusions:
- The review provides insights into selecting optimal candidates for epilepsy surgery.
- Identified prognostic factors can aid clinical decision-making.
- Concerns regarding the quality of published reports highlight the need for improved standards in assessing surgical outcomes.