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On a rare form of epilepsy in infants--Ohtahara syndrome
1Department of Paediatrics, University of Medicine, Plovdiv, Bulgaria.
Insights
Ohtahara syndrome, a severe epilepsy, often begins in the first week of life with difficult-to-treat seizures. Early detection is crucial for improving outcomes in infants with this condition.
Area of Science:
- Pediatric Neurology
- Neonatology
- Epileptology
Background:
- Ohtahara syndrome is a rare, severe infantile epilepsy characterized by specific EEG findings.
- Early-onset seizures in neonates can indicate serious underlying neurological conditions.
Observation:
- Fifteen children with Ohtahara syndrome were studied, with most experiencing seizures within the first week of life.
- Seizures were polymorphic and resistant to standard treatments like ACTH and anticonvulsants.
- Electroencephalography (EEG) consistently showed suppression-burst patterns in all affected infants.
Findings:
- The prognosis for Ohtahara syndrome is grave, with significant mortality in the neonatal and infancy periods.
- A substantial proportion of survivors developed other severe epilepsy syndromes, including West syndrome and Lennox-Gastaut syndrome.
- The study highlights the critical role of EEG in diagnosing Ohtahara syndrome.
Implications:
- Early diagnosis of Ohtahara syndrome is vital for timely intervention and management.
- Understanding the natural history of Ohtahara syndrome aids in predicting long-term outcomes.
- This research underscores the importance of recognizing suppression-burst patterns on EEG in neonates with seizures.
Abstract:
We report 15 children with clinical and electroencephalographic evidence of Ohtahara syndrome. The onset of seizures in most of them was within the first week of life. The seizures were predominantly polymorphic and refractory to treatment with ACTH and anticonvulsants. Suppression-burst patterns were recorded on the EEG in all cases. The outcome in all children was grave--four died in the neonatal period, and three-in the infancy period. Five of the survivors evolved into the West syndrome and three-into the Lennox-Gastaut syndrome. It is concluded that early detection of Ohtahara syndrome is of essential importance for the prognosis of newborns and little infants with seizures.