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Updated: Feb 28, 2026
Author Spotlight: Studying Clinical Characters and Epilepsy Outcomes After Frontal Disconnection in Patients with MOGHE
Published on: August 16, 2024
Cognitive outcome after epilepsy surgery in children: A controlled longitudinal study
Valentina Sibilia1, Carmen Barba1, Tiziana Metitieri1
1Pediatric Neurology Unit and Laboratories, Children's Hospital A. Meyer-University of Florence, Viale Pieraccini 24, 50139 Florence, Italy.
Insights
Children undergoing epilepsy surgery showed improved cognitive development trajectories compared to non-surgical candidates. This study highlights potential benefits of surgical intervention for cognitive outcomes in drug-resistant epilepsy.
Area of Science:
- Pediatric Neurology
- Developmental Neuroscience
Background:
- Drug-resistant epilepsy significantly impacts children's cognitive development.
- Understanding cognitive outcomes post-surgery is crucial for treatment planning.
Purpose of the Study:
- To analyze cognitive outcomes two years after epilepsy surgery in children.
- To compare cognitive trajectories between surgically treated children and a control group of surgical candidates.
Main Methods:
- A controlled longitudinal study involving 31 children undergoing surgery and 14 controls.
- Neuropsychological assessments (IQ/GDQ) were conducted at baseline, one year, and two years post-intervention.
- Specific cognitive functions like memory and visuomotor skills were evaluated.
Main Results:
- No significant difference in IQ/GDQ scores between groups at baseline and two years.
- The surgical group demonstrated improved developmental trajectories compared to controls.
- Significant increases in digit span and Rey recall scores were observed one year after surgery in the operated group.
Conclusions:
- Epilepsy surgery is associated with improved cognitive trajectories in children.
- Early age at seizure onset correlated with lower cognitive scores.
- Further research with larger cohorts and longer follow-up is warranted.
Objective:
To analyze the determinants of cognitive outcome two years after surgery for drug-resistant epilepsy in a cohort of 31 children when compared to a control group of 14 surgical candidates who had yet to undergo surgery two years after the first neuropsychological assessment.
Methods:
Controlled longitudinal study including three evaluations of IQ (Intelligence Quotient) scores or GDQ (General Developmental Quotient) for each group depending on the patient's age: prior to surgery (T0), one year (T1) and two years (T2) after surgery for the surgical group; baseline (T0) and one year (T1) and 2years (T2) after the first evaluation for the control-group. At follow-up, 25 children (80%) of the surgical group were seizure free, while seizure outcome was unsatisfactory in the remaining six (20%). To analyze language, visuomotor skills, memory, reading, visual attention, and behavior, we selected 11 school age children in the surgical group and nine controls. We reported performance prior to (T0) and one year after surgery (T1).
Results:
There was a significant correlation between earlier age at seizure onset and lower IQ/GDQ at T0 (r=0.39; p=0.03) in the overall cohort. IQ/GDQ scores did not significantly differ between the surgical and control groups when analyzed at T0 and T2. However, they evolved differently with an improved developmental trajectory becoming identifiable only in the surgical group (F1,31=5.33 p=0.028; η2=0.15). There was also a significant increase of forward digit span (Z=2.33; p=0.02) and Rey recall scores (Z=1.97; p=0.049) in the surgical school age subgroup at T1 versus T0.
Significance:
We identified significantly different developmental trajectories in operated versus non- operated children with improved IQ/GDQ scores in operated children only. We also observed a significant increase of digit span scores and Rey recall scores a year after surgery. Further studies including larger samples with longer follow-ups are needed to confirm these preliminary findings.
