聴性脳幹反応による新生児・乳児の他覚的聴力検査

概要

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The reliability of the auditory brainstem response (ABR) audiometry in newborns and infants was studied. In the subjects consisting of 7 newborns and 15 infants, whose responses to conventional behavioral audiometry were obtained at intensities ranging from 40 to 70dB, the ABR thresholds evoked by both 1kHz tone-pips and clicks lay between 5 and 20dB. These were the same as those in adults with normal hearing. In the subjects consisting of 2 newborns and 7 infants who did not respond to conventional behavioral audiometry at the intensity of 70dB, the ABR thresholds for each auditory stimulus were elevated by 35 to 70dB and no responses were noted at 90dB. The results of the present study indicate that the ABR can be applied clinically as an objective method of audiometry for newborns and infants.
耳鼻咽喉科臨床学会の論文