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Brainstem auditory evoked potential with increased stimulus rate in minor head trauma

Published online by Cambridge University Press:  29 June 2007

Ludwig Podoshin ,
Yaacov Ben-David ,
Milo Fradis ,
Hillel Pratt ,
B. Sharf  and
M. Schwartz
Ludwig Podoshin*
Affiliation:
Department of Otolaryngology, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Yaacov Ben-David
Affiliation:
Department of Otolaryngology, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Milo Fradis
Affiliation:
Department of Otolaryngology, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
Hillel Pratt
Affiliation:
Evoked Potentials Laboratory, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
B. Sharf
Affiliation:
Department of Neurology, Bnai Zion Medical Center, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
M. Schwartz
Affiliation:
Department of Neurology, Bnai Zion Medical Center, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel.
*
L. Podoshin, M. D. Dept. of OtolaryngologyBnai Zion Medical Center, P.O.B. 4940, Haifa 31048, Israel.
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Abstract

Fifteen Minor Head Trauma patients were investigated by Brainstem Auditory Evoked Potentials at 10/s and 55/s stimulus rate. The results were compared with those of the same patients at a second examination, two months later, as well as with a matched normal control group. Increasing the stimulus rate in MHT patients caused a significant but reversible delay in the central conduction time. No significant difference was found regarding the interpeak latency differences at a 10/s stimulus rate. The present study suggests that the primary lesion in MHT is ischaemic, affecting synaptic efficiency, and not axonal damage. These findings may be informative on the as yet obscure pathophysiological mechanism of minor head trauma.

Type
Main Articles
Information
The Journal of Laryngology & Otology , Volume 104 , Issue 3 , March 1990 , pp. 191 - 194
Copyright
Copyright © JLO (1984) Limited 1990

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