J Korean Acad Rehabil Med Search


Journal of the Korean Academy of Rehabilitation Medicine 1985;9(2):15.
Effect of Local Ischemia on the Sensory Evoked Action Potentials in Human Median Nerve
Jin Ho Kim, M.D., Se Yoon Oh, M.D. , Ki Whan Kim, M.D.*
Department of Rehabilitation Medicine & *Physiology, College of Medicine, Seoul National University
국소빈혈이 정중신경 감각구심성 섬유의 유발전압에 미치는 영향
김진호, 오세윤, 김기환*
서울대학교 의과대학 재활의학교실 및 *생리학교실

The sensory nerve conduction study was performed by the antidromic recordings of evoked action potentials in human median nerve.

The 23 subjects employed in this study were confirmed neurologically healthy. Local ischemia was induced by use of pressure cuff, with which 200~250 mmHg pressure was applied on the subject arm for 25 minutes.

The subjects were divided into two groups:

GroupⅠ (18 subjects): compensatory group for the decreased skin temperature due to local ischemia with infra-red lamp. GroupⅡ (5 subjects): not compensatory group.

The results obtaining were as follows;

1) During ischemia, the conduction velocities of both distal and proximal segments slowed down progressively in both groups.

2) The decrease in amplitude and the increase in duration of sensory evoked action potentials were noted in both groups.

3) The degree of decrease in the sensory conduction velocity of proximal segment during ischemia was rather larger than that of distal segment in both groups.

4) The progressive slowing in conduction velocities, the decrease in amplitude and the increase in duration of action potentials were not statistically different in both groups.

These results suggest that local ischemia induces the progressive slowing of conduction velocity and results in the complete blocking of evoked action potential, but the secondary cooling due to ischemia could not affect significantly the changes in sensory conduction.

Key Words: Local ischemia, Sensory nerve action potential, Median nerve, Skin temperature, Control


Browse all articles >

Terms of Use   |   Privacy Polity
Editorial Office
Department of Rehabilitation Medicine, Seoul National University Hospital
101 Daehak-ro, Jongno-gu, Seoul, Korea
Tel: +82-10-8678-2671    Fax: +82-2-6072-5244    E-mail: edit@e-arm.org; edit.karm@gmail.com
Business Registration: 110-82-07460                

Copyright © 2024 by Korean Academy of Rehabilitation Medicine.

Developed in M2PI

Close layer