Türk Nöroşirürji Dergisi
1991 , Vol 2 , Num 2
REFERENCE SIGNS OF AUDITORY BRAINSTEM RESPONSES IN THE DETECTION OF POSTERIOR FOSSA LESIONS
1GATA, KBB Anabilim Dalı2 GATA, Nöroşirürji Anabilim Dalı The recording procedure of auditory evoked potentials has been becoming a powerful alternative method to computorized imaging techniques. Particularly. improvements in this method over last 25 years, have offered opportunity of identification of retrocochlear lesions while they are very small dimensions yet.
Auditory brainstem responses are very important testing methods in otoneurological diagnosis. Posterior fossa tumors which have effected auditory pathways have been detected approximately with 100 % truth rate with morphologic and quantitative analysis of ABR.
In the present study, electrophysiologic findings obtained from 25 cases with ABR pathologies have been quantitatively and qualitatively analyzed. It has been a result of this analysis that incomplete response patterns without late components and pathologic values which are obtained by comparison interpeak intervals with normal and interaural ones are the most diagnostic signs in tumor detection.
Anahtar Kelimeler : Posterior Fossa Tumors, ABR