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Follow-up study of 482 cases with convulsive disorders in the first year of life.

, , and . Dev Med Child Neurol, 26 (4): 425--437 (August 1984)

Abstract

A total of 482 patients who had had one or more seizures in the first year of life were followed for at least five years (most for more than 10 years). The patients were divided into four groups: febrile convulsions, infantile spasms, status epilepticus and 'other'. Of those with febrile convulsions, 62 per cent developed normally, compared with 14 per cent in the group with infantile spasms, 15 per cent with status epilepticus, and 24 per cent in the 'other' group. Findings on recurrent seizures, epilepsy and mental retardation and/or neurological abnormalities are also reported. Epilepsy developed equally frequently among those with partial and with generalised seizures, but the former more frequently became mentally retarded. The effects of severity of seizures and other factors are discussed. In general, this research confirmed the grave prognosis after seizures during the first year of life, and not only for West syndrome and status epilepticus. The outcome was more favourable when the seizures were cryptogenic or febrile, isolated, with onset in the second six months, generalised, and when the EEG was normal between seizures.

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