[Neonatal status epilepticus of unknown etiology (author's transl)].

Forty-three neonates with status epilepticus of unidentified etiology were studied by EEG. 90% had favorable outcome. In the cases with unfavorable evolution the following criteria allowed an early poor prognosis: a very early onset of the seizures in the first or second day of life, the presence of tonic seizures and hypertony between seizures, duration of the seizures more than 4 days, EEG activity in the frequency of the alpha band during the seizures, a flat tracing after the seizures, very discontinuous activity between the seizures and, finally, the reappearance of seizures after a seizure-free interval.

[EEG appearance during waking and falling asleep in children aged 1-4 years (without serious pathology)(author's transl)].

The authors have studied the EEG characteristics of 188 children aged 1-4, without serious pathology, during waking and falling asleep spontaneously in the afternoon. The children were divided into 3 groups: aged 12-23 months, 24-35 months and 36-47 months. On falling asleep the EEG appearances varied, but hypersynchrony was most marked in the youngest children and in the older group theta activity was commonest.

[Anesthesia with pure enflurane in children: an electroencephalographic study (author's transl)].

E.E.G.

[Clinical and electroencephalographaic aspects of seizures due to electrolyte and water disturbances in infants (author's transl)].

Clinical seizures, or subclinical EEG discharges, were observed in sixteen new-born babies or infants under one year of age admitted to hospital. Clinical observation and initial biological tests showed that: --seizures occurring during rehydration of infants with salt retention are not associated with severe neurological lesions,--in dehydrated babies, a dissociation between electroencephalographic and clinical manifestations (electrical discharges without clinical signs or vice versa) and large abnormalities in the intercritical tracing are bad prognostic elements;--in new-born babies with severe dehydration and meningeal hemorrhage, the occurence of clinical and electroencephalographic seizures does not imply that there will be an unfavourable evolution. The authors discuss the physiopathological correlations arising from the study of this series.

[Post-natal respiratory disorders and hypothyroidism. Polygraphic study of a case].

A new-born baby with hypothyroidism showed only one clinical manifestation of the condition. There were repeated lasting attacks of apnoea, and periodic respiration was demonstrated by polygraphic recordings. These recordings, made during the waking periods and sleep, between the 10th day and 7th month, showed the evolution of the apnoea and periodic respiration as a function of the two treatments applied.

["Spike focus" during the evolution of febrile convulsion: an electrophysiological and clinical study of 35 patients (author's transl)].

Out of 500 patients with febrile convulsions, 41 were found to have a spike focus on E.E.G.

[Clinical course following a neonatal E.E.G. recording reported as severely abnormal (author's transl)].

The purpose of this study was to evaluate the prognostic value of neonatal E.E.G.