Brainstem auditory evoked potential (BAEP) abnormalities in subjects with craniovertebral malformations.
We report the data on 42 monaural BAEP recordings from 10 patients with craniovertebral malformations. Of 8 preoperative recordings from 3 patients 6 showed an increased I-III interpeak latency (IPL). Of 28 recordings taken shortly (1-12 months) after surgery 21 showed an abnormal I-III IPL. On the other hand, of 6 recordings from 3 patients 20 years after surgery 5 were in the normal range and 1 showed an abnormal I-III IPL. Although the most important site of craniovertebral malformations is the cervicomedullary junction, the results reported suggest unilateral or asymmetrical bilateral involvement of the medullary-pontine junction, on the evidence of BAEP wave III, in a large proportion of patients with these malformations.
D000328:Adult; D001933:Brain Stem / Q000503:physiopathology*; D001270:Cervical Atlas / Q000002:abnormalities*; D005072:Evoked Potentials, Auditory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010985:Platybasia / Q000503:physiopathology*