Naslov
THE INCIDENCE OF BLlNKE REFLEKS ABNORMALITIES IN PATIENTS SUFFERING FROM THE IDIOPATHIC TRlGEMINAL NEURALGIA

Autori
Mikula, Ivan ; Miškov, Snježana ; Negovetić R, Demarin, Vida

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Knjiga sažetaka, 3.kongres Hrvatskog neurokirurškog društva / Negovetić, Lucijan - Zagreb : Printing, 2002

Skup
3.kongres Hrvatskog neurokirurškog društva

Mjesto i datum
Zagreb, Hrvatska, 06.06.2002. - 08.06.2002

Vrsta sudjelovanja
Poster

Vrsta recenzije
Domaća recenzija

Ključne riječi
blink reflex; trigeminal neuralgia

Sažetak
We have done a study to determine the incidence of Blink-reflex abnormalities and EEG changes in patients suffering from the idiopathic trigeminal neurafgia. Patients: The study has been done on 25 subjects diagnosed according to the ICD-X criteria. The symptomatic disease had been ruled out by means of laboratory and radiologic tests. All patients have been newly diagnosed and received no therapy sofar. Methods: We have stimulated the supraorbital foramen and recorded the evoked response from both mm. orbicularis oculi. We have measured the amplitudes and the latencies of the ipsilateral early phasic component (R1) and the bilateral late tonic component (R2, R2'~. EEG was recorded using the cap electrodes and the International 1020 EEG system. The results have been compared to those of the contro! group of age and sex matched healthy adults. Results: In the group of subjects suffering from the idopathic trigeminal neuralgia, the Blink-reflex results showed slightly prolonged latencies of both R2 and R2' when stimulating the afflicted side and normal latencies of ali components when stimulating the contralateral side, proving the dysfunction in the afferent part of the reflex cycle. No significant differences of amplitudes have been noted. The latencies of late components have exceded the normal range (+2.5 SD) in 35% of the cases. EEG changes, mostly diffuse or bitemporal appearance of theta waves, have been found in 27% of the subjects tested. EEG findings and Blink-reflex late components latencies showed a high level of correlation with each other and with the frequency of symptoms. Conclusion: We believe that Blink-reflex changes are more frequently encountered among patients with idiopathic trigeminal neuralgia than EEG abnormafities, and that combining the two tests can improve the clinician's insight in patients's actual state.

Izvorni jezik
Engleski

Znanstvena područja
Kliničke medicinske znanosti

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