Peculiarities of Cortical Bioelectrical Activity During Sleep and Wakefulness in Children with Idiopathic Focal Epilepsy and Mostly Sleep Disturbances

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Laboratorinė medicina. 2009,
t. 11,
Nr. 4,
p. 190 -
195

Peculiarities of Cortical Bioelectrical Activity During Sleep and Wakefulness in Children with Idiopathic Focal Epilepsy and Mostly Sleep Disturbances

Rasa Kulvietienė, Rūta Praninskienė

 

Background. Idiopathic focal epilepsy (IFE) or Roland epilepsy (RE) is one of the most common age related epileptic syndrome. The disease is known as bei nign as the symptoms disappear during maturation. However, this syndrome in­volves cognitive function, language and behavior disorders, headache, anxiety, aggression. The identification of the causes of disease is of primary impor­tance. Since the symptoms mostly occur at the night, it is thought that sleep disor­ders may be involved in the epileptic sei­zure occurrence and provocation. It is as­sumed that improvement of sleep quality may prevent or minimize epileptic syn­drome. However, such studies are carried out in a little.

The aim of this study was to investi­gate the sleep disorders in children with RE and to analyze the typical focal dis­charges in electroencephalogram during wakefulness and sleep in these children.

Material and Methods. During the study 14 patients with IFE were involved. Their sleep disorders were evaluated on Sleep Disturbance Scale for Children - SDSC [12]. The electroencephalograms were performed during sleep and wakeful­ness using the 10-20 electrode placements.

EEGs were analyzed by the neurophysi­ologist according to the RE specific rolandic spikes-negative diphasic slow spike (voltage over 100 ^V) followed by a slow wave.

Results. Our results show that chil­dren with idiopathic focal epilepsy mostly have these sleep disorders: bruxism, snoring, talking, sweating, and limb movements during sleep. The EEG anal­ysis shows that one fifth of the investi­gated EEGs had specific spikes only dur­ing sleep. The centrotemporal spikes spread to the frontal areas in more than half cases.

Conclusion. To confirm the diagno­sis of idiopathic focal epilepsy we recom­mend register EEG in sleep pattern due to rolandic spikes activation during sleep.

Keywords: children, epilepsy, electroen­cephalography, sleep disorders.

 

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