Poster Session: EEG and EEG Related Techniques - Epilepsy ~P-~
STROKE AND DIFFERENT TYPES OF EPILEPTIC SEIZURES
B. Orlandic, J. Strikovic, B. Karaic, S. Sretenovic. Hospital for Prevention
and Treatment of Cerebrovascular Diseases "Sveti Sava" Belgrade, SR Yugoslavia Stroke is a disease indicated by a number of different pathological reactions of an afflicted brain. Some of those indications are different kinds of epileptic seizures. Purpose of this Research is to point out possible differences in frequency of occurrence of different kinds of epileptic seizures that depend on different causes of cerebral vascular insults. Material and Methods: Group consisted of patients that were treated for their first stroke during the two year period (1994-1995). We took 480 patients between 3 5 ~ 5 years of age that had never had epileptic seizures before. Results: Of the total number of patients (480), for 70.6% of them, the cause of stroke was arterial thrombotic process on extra or intracranial blood vessels. In 22.6% cases the cause was bleeding (either brain or subarahnoidal), and in 6.8% the cause was brain embolism. Epileptic seizures appeared in 4.2% of the patients. In the group of patients with thrombotic process, epileptic seizures appeared in 3.25%. Of that number, 70.5% of patients had focal epileptic seizures (attacks) and 29.5 grand mal seizures. In the group of patients with bleeding, epileptic seizures appeared in 6.85%. Out of that number 72% patients had grand mal seizures, and 28% focal epileptic seizures. In the group of patients with brain embolism, epileptic seizures appeared in 4.55% of cases. Out of that number 97% of patients had focal epileptic seizures and 3% grand mal seizures. Conclusions: During the two year period, out of 480 patients with first stroke, we found the occurrence of epileptic seizures in 4.2% of cases. The most frequent occurrence of epileptic seizures, we found in the group of patients with bleeding, in 6.85% cases. Patients with brain embolism had them in 4.55% and in the group of patients with thrombotic process in 3.25% of cases.
CEREBRAL BLOOD FLOW VELOCITY CHANGES DURING SIMPLE PARTIAL MOTOR SEIZURES
L. Niehaus, U. Wieshmann i. I Department of Neurology, CharitY, Humboldt-University Berlin, Germany; Department of Neuroradiology, Charitd, Humboldt-Universi~' Berlin, German 3,
Background: Aim of our study was to investigate neurovascular coupling in seizures using T e D with its high temporal resolution. Therefore, we monitored simultaneously cerebral blood flow (CBF) changes and cerebral electrical activity during simple partial seizures (SPS). Methods: A 1 l years old girl suffering from epilepsy caused by cortical dysplasia developed a series of right-sided simple partial motor seizures (SPS). Simultaneous TCD and EEG recordings were performed, The mean blood flow velocities (MBFV) were measured in both middle cerebral arteries. Semiology and EEG findings were correlated with the MBFV changes during 9 consecutive seizures. Results: A rapid increase of MBFV in the left MCA occurred within 10 sec after the electrical seizure onset on the left side. The maximum MBFV-increase (50% above baseline) was reached within 2 min. In the later stages of the seizures, when bilateral discharges were registered the MBFV increased in the right MCA of 30% of baseline values. Conclusion: Our results suggest that the neurovascular coupling remains intact during pathological neuronal electrical activity.
functions we used MMSE, Boston naming test, Token test and analysis of spontaneous speech. EEG was evaluated by expert inspection. The obtained results showed severe disorders of language manifested by anomia, defects of verbal comprehension, sparse spontaneous speech, phonemic paraphrasia, dyslexia and dysgraphia. Beside that, patients had dysarthria with slurring speech and difficulties in pronounciation of specific sounds. EEG showed a slowing of background activity, with an excess of theta and delta waves, which were accentuated above temporal regions.
VALUE OF THE ELECTROENCEPHALOGRAM IN PREDICTION OF HYDROCEPHALUS
G. Riemer, H.C. Hansen, O. Theis, S. Schrrder, K. Kunze. Neurologische
Universitiitsklinik Hamburg, Germany Hydrocephalus is a frequent complication in the course of subarachnoid hemorrhage (SAH). EEG- and CT scan-findings were only compared to predict vasospasm [ 1]. Brainstem lesions produce EEG-patterns consisting of frontal intermittent rhythmic delta activity (FIRDA). Recently we investigated FIRDA in SAH: reduction of consciousness, the extent of FIRDA and of hydrocephalus were closely related especially in stages III & IV . Since 1995, 69 patients were treated, 34 provided with a shunting procedure of ventricles. A pennant shunt is usually indicated when interruption of the external shunt causes a reduction of consciousness. In 6 of these cases an elevated intracerebral pressure was accompanied by increased FIRDA. This finding may even precede clinical deterioration. Consequently we recommend the registration of FIRDA as an additional tool in the follow-up of SAH in order to predict hydrocephalus. References
[ 1] Rivierez M et al.; Value of Electroencephalogram in Prediction and Diagnosis of Vasospasm after Intracranial Anearysm Rupture: Acta Neurochir (Wien) 1991; 110:17-23 12} Riemer Get al.; EEG-pattem--changes(FIRDA) indicating the need of shunting procedures in subarachnoid hemorrhage; 41. Jahrestagungder EEG-Gesellschaft, Wuppertal, Juni 1996
THE "HAPPY PUPPET" SYNDROME OF ANGELMAN: EEG-POLYGRAPHIC STUDY OF TEN CASES
E. Zullini, E. Fontana, D. Arcangeli, A. Montagnini, A. Franco e B. Dalla Bemardina, Cattedra di Neuropsichiatria Infantile, Universith di Verona,
Italy The Angelman's Syndrome (A.S.) is characterized by several peculiar well defined features (lack of speech, ataxia with jerkly movements, microcephaly, uncontrollable bouts of laughter and unusually happy facial expression) and by deletion of chromosome 15q 11-13. However the clinical features are usually not evident before the third year of life and chromosomal deletion may lack in about 40% of the cases. In order to see if the EEG pattern can be useful to an early recognisation of A.S. The Authors report the result of a longitudinal study of 10 children (5 male and 5 female) with A.S. aged between 5 and 17 years followed since the first year of life with repeated EEG-polygraphic records both during awake state and sleep. All children showed a peculiar electroclinical pattern characterized by frequent atypical absences, frequently organized in long lasting status, associated by subcontinous erratic sometime rythmic myoclonias. This particular status present in the first year of life in all cases explain the jerkly movement and ataxia and represent a suggesting features of A.S. diagnosis during the first two year of life when other sign and symptoms are not evident.
LANGUAGE DISORDERS AND EEG ABNORMALITIESIN TWO PATIENTS WITH DIALYSIS DEMENTIA
M.G. Vukovi6 I, R.Dj. Suji~ 2.1 Facul~ of Defectology, University of
Belgrade, Yugoslavia; e Institute of Neurology. Zvezdara Clinical Center, Belgrade, Yugoslavia Dialysis dementia is characterized by global dementia and specific abnormalities in electroencephalogram (EEG). Dysarthria appeared a few months before dementia and sometimes pathological EEG as well. In this work we report two cases with dialysis dementia in order to estimate profile of language disorders and EEG changes. In examination of language
SLEEP EEG IN FIBROMYALGIASYNDROME: A QUANTITATIVE STUDY
Teresa Paiva 1, Jaime Branco ~. i Lab. EEG, CEEM, Hospital Santa Maria,
Lisboa, Portugal; 2 Dept. of Rheumathology, Hospital Egas Moniz, Lisboa, Portugal Fibromyalgia syndrome (FMS) is characterized by a set of symptoms including musculo-skeletal pain, fatigue, headache, insomnia and non restorative sleep, and psychiatric disturbances associated with tender points with