What is the role of brainstem auditory evoked potential (BAEP) testing in the workup of meningomyelocele?

Updated: Oct 25, 2019
  • Author: Andrew B Evans, MD; Chief Editor: Selim R Benbadis, MD  more...
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Answer

Answer

Taylor et al studied BAEP and VEP in 47 infants with meningomyelocele in an effort to determine whether evoked potentials EPs reflect early neurologic status and whether BAEPs and VEPs have prognostic value for neurologic outcome. [34] The infants, aged 1 day to 3 months, were tested while still in hospital after the meningomyelocele repair.

Normal BAEPs were found in 41% of the patients and normal VEPs in 62%. BAEPs were abnormal in 9 infants studied who had symptomatic Arnold-Chiari malformation; VEPs were abnormal in only 55% of symptomatic infants. VEPs did not appear to be sensitive enough to have prognostic value in these infants. Nevertheless, BAEPs were consistently abnormal in patients with symptomatic Arnold-Chiari malformation and showed a positive predictive value of 88% and an accuracy of 84% in predicting central neurologic sequelae.


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