What is the role of brainstem auditory evoked response (BAER) in postnatal testing of Down syndrome?

Updated: Apr 30, 2018
  • Author: Gratias Tom Mundakel, MBBS, DCH; Chief Editor: Maria Descartes, MD  more...
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Answer

The auditory brainstem response (ABR), also known as the brainstem auditory evoked response (BAER), may be tested to demonstrate hearing loss. Evaluation of the ABR in 47 nonselected children with Down syndrome aged 2 months to 3.5 years indicated some hearing loss in 66% (28% unilateral, 38% bilateral). Speech evaluation may also be indicated. A study by Rupela et al found evidence that childhood dysarthria (CD), childhood apraxia of speech (CAS), and motor speech disorder-not otherwise specified (MSD-NOS) are responsible for the motor speech characteristics of children with Down syndrome, with variability and overlapping symptoms occurring in these youngsters. This differs from the previous view that either CD or CAS causes such characteristics in these children. [96]


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