Lexical retrieval pre- and posttemporal lobe epilepsy surgery in a pediatric sample.

Area of Science:

• Neuroscience
• Pediatric Neurology
• Epileptology

Background:

• Intractable epilepsy in children and adolescents often necessitates surgical intervention.
• Temporal lobe resection is a common surgical approach for drug-resistant epilepsy.
• Understanding the neurocognitive sequelae of temporal lobe surgery is crucial for patient management.

Purpose of the Study:

• To assess changes in lexical retrieval before and after temporal lobe resection in pediatric patients.
• To compare the effects of left versus right temporal lobe resection on language functions.
• To evaluate the impact of surgery on confrontation naming and verbal fluency.

Main Methods:

• Retrospective chart review of 36 pediatric patients with intractable epilepsy undergoing temporal lobe resection.
• Neuropsychological testing including Boston Naming Test (BNT) and D-KEFS Fluency administered pre- and post-surgery.
• Statistical analysis using linear mixed effects models to compare outcomes between left and right temporal lobe resection groups.

Main Results:

• Confrontation naming performance significantly declined following left temporal lobe resection (p<0.05).
• No significant decline in confrontation naming was observed after right temporal lobe resection.
• Verbal fluency (D-KEFS Fluency) did not show significant changes in either surgical group.

Conclusions:

• Left temporal lobe resection in pediatric epilepsy patients is associated with impaired lexical retrieval, specifically affecting naming abilities.
• The potential for decline in specific language functions, such as naming, should be discussed during pre-surgical counseling.
• Informing patients and families about the risk of lexical retrieval deficits is essential for surgical decision-making.