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Active epilepsy in mentally retarded children. II. Etiology and reduced pre- and perinatal optimality
U Steffenburg1, G Hagberg, M Kyllerman
1Department of Pediatrics, University of Göteborg, Ostra Hospital, Sweden.
Insights
This study found that severe mental retardation in children with epilepsy is often linked to prenatal, perinatal, or postnatal factors. Perinatal and postnatal causes were associated with a higher frequency of severe intellectual disability.
Area of Science:
- Neurology
- Pediatrics
- Genetics
Background:
- Epilepsy is a common neurological disorder in children.
- Intellectual disability (ID) frequently co-occurs with epilepsy, impacting developmental outcomes.
- Understanding the etiology of epilepsy in children with ID is crucial for targeted interventions.
Purpose of the Study:
- To investigate the etiological origins of active epilepsy in children with varying degrees of intellectual disability.
- To identify risk factors associated with prenatal, perinatal, and postnatal periods in children with epilepsy and ID.
Main Methods:
- A population-based study involving 98 children aged 6-13 years with active epilepsy and intellectual disability.
- Categorization of epilepsy etiology into prenatal, perinatal, postnatal, and untraceable origins.
- Comparison of etiological factors and developmental outcomes between children with mild and severe intellectual disability.
Main Results:
- A biopathological origin was identified in 66% of children with mild ID and 92% with severe ID.
- Prenatal etiology was most common (51-57%), followed by untraceable (8-34%), postnatal (6-16%), and perinatal (9-19%).
- Severe ID was significantly more frequent in perinatal (80%) and postnatal (83%) groups compared to prenatal (67%) and untraceable (29%) groups.
Conclusions:
- Epilepsy in children with intellectual disability has a significant biopathological origin.
- Perinatal and postnatal factors are strongly associated with severe intellectual disability in children with epilepsy.
- Accumulation of negative events during prenatal and perinatal periods may contribute to adverse neurodevelopmental outcomes.
Abstract:
A population-based study of active epilepsy in mentally retarded children identified 98 children, 6-13 years old. A biopathological origin was established in 66% of mildly and 92% of severely retarded children: a prenatal etiology was considered in 51% and 57%, a perinatal in 9% and 19%, a postnatal in 6% and 16% and an untraceable etiology in 34% and 8%, respectively. Severe mental retardation was more frequent in the peri- and postnatal groups (80% and 83%) than in the prenatal and untraceable groups (67% and 29%). Thirty-four pre- and perinatal optimal items were defined. Children with a prenatal etiology did not differ from controls in any of the periods. Children with a perinatal etiology had, compared with controls, higher proportions of non-optimal items successively increasing through the pre- and perinatal periods showing the accumulation of negative events.