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ABR Evaluations

dybala at utdallas.edu dybala at utdallas.edu
Thu Nov 7 19:28:22 EST 1996

Another point is about the frequency specificity of the
ABR. Clicks only cover 1-4 kHz.  Even IF the ABR was normal
you could have loss at other freq.

jbealer at cris.com wrote:
> I saw a patient file cross my desk the other day that kind of put me
> in shock.  It was a patient with a unilateral hearing loss and poor
> discrim in one ear.  He was referred to an ENT group whose audiology
> department did a threshold ABR (did not repeat any of the recordings)
> that had suspect peaks in the affected ear below 60 dBnHL.  The report
> stated that the affected ear actually had "normal hearing" and that
> the audiological evaluation must have been in error or the patient was
> faking the loss.  
> Does anyone else see the problem here?  Since when do we qualify
> normal hearing with a threshold ABR?  I am about 6 months removed from
> clinical settings (now working in occupational audiology) however, as
> I recall, all ABR recordings are repeated for the basic reason of
> validity.
> The truly sad part is that the same audiology department administered
> another hearing evaluation the following day to this patient and came
> up with the same unilateral loss.  
> These are my peers performing these studies.  Not just one
> audiologist, but several participated in the evaluation of this
> patient.  
> How would you handle this?  Would appreciate your feedback.

> Joel R. Bealer

Thank you for your support,
Paul Dybala
dybala at utdallas.edu

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