聴性脳幹反応による幼小児の他覚的聴力検査

概要

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The reliability of routine objective audiometry in infants by auditory-evoked brain-stem response (ABR) was studied. ABR recordings and pure tone thresholds by COR or play audiometry in 63 infants were compared with those obtained from 10 normally hearing and 20 hearing-impaired adults. The ABR thresholds and latencies in normally hearing infants were the same as those in normally hearing adults. The ABR latencies at the response threshold in hearing-impaired infant were also identical with those in hearing impaired adults. On the other hand, there was a discrepancy between infants and adults in terms of the difference between the ABR and pure tone thresholds. However, the discrepancy was of the magnitude to be expected due to uncertainty of COR and play audiometry. Thus, it is reasonable to predict hearing acuity in an infant from the ABR threshold, after an appropriate adjustment with reference to the difference between the ABR and pure tone thresholds in adults.
社団法人日本耳鼻咽喉科学会の論文