The diagnostic value of earlier and later components of Vestibular Evoked Myogenic Potentials (VEMP) in XXXX .

@entity1 @entity75 @entity4668 @entity1274 @entity393 @entity15
AIM OF THE STUDY: To evaluate the ability of VEMP to disclose spatial dissemination of @entity15 . MATERIALS AND METHODS: Forty-six @entity15 @entity1 with auditory and/or vestibular symptoms were studied. @entity1 were divided in two groups. Group 1 included 24 @entity1 with brainstem MRI findings, and Group 2 included 22 @entity1 without MRI findings. VEMP and BAEP have been recorded and assessed. RESULTS: Abnormal p13n23 wave was observed in 50%, while unilateral absence or bilateral delay of the n34p44 in 43% of the @entity1 . The overall diagnostic value considering abnormal cases suggested by both first and second VEMP waves was increased to 71%. Statistically significant differences revealed between @entity1 and controls for @entity4668 latency (p=0.018). The p13n23 was abnormal in 7 @entity1 , although MRI scanning did not reveal @entity75 . In 9 out of 18 @entity15 @entity1 suffering from @entity393 , n34p44 was present in the unaffected ears and absent in the affected side, although p13n23 was normal. CONCLUSION: Abnormal VEMP imply the presence of lesions undetected by MRI neuroimaging, which verifies the diagnostic value of the method. Unilateral absence of n34p44 complex was related with @entity1274 , supporting the hypothesis that n34p44 is of cochlear origin.
