Developmental Change of Brainstem Auditory Evoked Potential in Neonates

Sook Young Roh, Kee Duk Park, Kyoung Gyu Choi

Copyright ⓒ 1996. Ewha Womans University School of Medicine. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

Published Online: Jul 24, 2015

Abstract

Objectives

To observe the developmental maturation of brainstem auditory evoked potential(BAEP) for neonates by obtaining the normative data of each BAEP component in our own electrophysiological laboratory.

Methods

We reviewed 129 BAEP recordings in neonates ranging in gestational age from 33 weeks to 44 weeks. The BAEP recording were analyzed into latency(wave I,III,V), interpeak latency(I-III,III-V,I-V) and amplitude ratio(I/V) at 75dB sensation level clicks according to gestational age.

Results

The latencies of each BAEP component decreased with maturation. Interpeak latency of waveI-V(central conduction time)also decreased with increasing age during 33-40 weeks of gestational age.

Conclusion

These results provided the concept of abnormal in neonatal BAEPs and opportunity of functional evaluation about the auditory or brainstem maturation in pathologic conditions.

Keywords: Brainstem auditory evoked potential; Neonates; Normative data