The aim of study was to examine how to the Somatosensory evoked potentials are affected in patients with cerebrovascular thalamic lesions and to correlate the findings with sensory abnormalities

Ilievska, E

Ilievska, Liljana

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UDK616.8 	 ISSN 1331-5196 1953 ZAGREB . PROCEED"lNGS F 	 N . European Fede.ratioDof C·M-E S Neurological Societies 44th International Neuropsychiatric Pula Symposium June 16 - 19,2004 Pula, Croatia C-N-S rUIW P£AN AL"CIUOrl 1101'1 IC)',tM1 1T ft NEUROl CROAT 2004 	 VOL 53 SUPPL 1 132 'T' ! 441h INTERNATIONAL NEUROPSYCHIATRIC PULA SYMPOSIUM L lIievska, E lIievska (Skopje): Somatosensory evoked potentials in patients with thalamic pain The aim of study was to examine how to the Somatosensory evoked potentials (SEPs) are affected in patients with cerebrovascu lar thalamic lesions and to correlate the findings with sensory abnormalities. Methodology- SEPs are studied in 13 patients with unilateral cerebrovascular lesions affecting the thalamus .AII of patients had a central post stroke pain and abnormal sensibility of the all modality. Main age 't/as 66 years and was studied in relation to age­matched control group 50-80 years. Two-thirds of the lesions were on the right side of the brain. The SEP obtained in median nerve and posterior tibial nerve stimulation . Results: In supratentorial lesions with thalamic involvement, SEP showed marked abnormalities with absence of all or single components on the affected side . We could differentiate several kinds of abnormalities in median nerve stimulation: a) absence of all waves after P15 (4 cases): b) presence of N20 and P40, which showed marked amplitude reduction (4 cases): c) presence of P40 only, but other components were absent (3 cases) ; and d) presence of early and absence of late SEP components after 40 ms (2 cases) SEP obtained over the non-affected side did not show latency changes, however, SEP amplitudes showed significant increase , especially of N60 in median or N75 wave in tibial nerve st imulation , which was particularly discussed in th e paper. Conclusion: The results of our SEPs examination in patients with thalamic cerebrovascular lesions we re In accordance with sensory loss. It is based on the hypotheses that the transmitted activity is dispersed or aboli shed during its passage trough an insured zone . Key words: thalamic pain, somatosensory evoked potentials, cerebrovascular lesion References: 1.Kudo Y and Yamadoria: Somatosensory evoked potentials in patients wi th thalamic lesions. Neurology, 1985, 232:61-66 2.Stejskal L.Sobota J:Somatosensory evoked potential s in patients with occlu- sions of cerebral arteries. Electroenceph .clin.NeurophysioI1995,61 :482-496 Liljana Iiievska, Emilija Iiievska, Faculty of Medicine in Skopje, Macedonia S Soldo-Butkovic, K Marjanovic, M Kralj, S Tomic (Osijek, Beli Manastir): Epidemiological study of stroke incidence In Baranya County Long period of war and intensive migrations of the population during and after the war resulted in prolonged stress and greater proportion of elderly population in Baranya . The aim of this study was to give a survey of patients who were hospitalized in the Department NEUROLOGIA CROATICA Vol 53, Suppl 1,2004 I' · ' • "_1 I l-: 11' f tll t= r . J " 1l80lQII , ' , t'r ~ "" . .:1 [('''It' ,(i:' [1d, j ,,, ,I': ,11' J _! I 1\1 I' ' i :I'~; 11 l · /~' t.. ' I ,-' It, ." 

Somatosensory evoked potentials in patients with thalamic pain

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