SLOW SPIKE-WAVE ACTIVITY IN EEG AND ASSOCIATED CLINICAL FEATURES - OFTEN CALLED LENNOX OR LENNOX-GASTAUT SYNDROME
SLOW SPIKE-WAVE ACTIVITY IN EEG AND ASSOCIATED CLINICAL FEATURES - OFTEN CALLED LENNOX OR LENNOX-GASTAUT SYNDROME
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DOI:
10.1212/wnl.27.8.746
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发表时间:
1977-01-01
期刊:
影响因子:
9.9
通讯作者:
MARKLAND, ON
中科院分区:
文献类型:
--
作者:
MARKLAND, ON
Clinical features were studied in 83 patients with slow spike-wave activity in the EEG. Epileptic seizures, usually intractable, occurred in 82 patients. The majority had the onset of seizures during the first 2 yr of life. Minor motor seizures alone or in combination with other types of seizures occurred in 80%, and most had more than 1 type of seizure. The combination of tonic-clonic, minor motor and absence seizures was the commonest, occurring in 37%. Patients (66) were definitely retarded and 49 showed definite motor impairment. Etiologic factors responsible for cerebral insult were identified in 53 patients. Serial EEG studies showed a close relationship between the EEG patterns of hypsarrhythmia, independent multifocal spike discharges and slow spike-wave activity. The eponym Lennox-Gastaut syndrome is appropriate for a patient who has slow spike-wave activity in the EEG, exhibits mental retardation and has intractable seizures of various types. The syndrome does not imply a pathologic entity because many diverse processes, both static and progressive, can produce this syndrome.