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Journal of the Korean Academy of Rehabilitation Medicine 1995;19(4):26.
Phrenic Nerve Conduction Study by Magnetic Stimulation of Ipsilateral Cervical Roots
Byung Gwon Park, M.D.
Department of Rehabilitation Medicine, Chosun University College of Medicine
동측 경추 신경근의 자기자극에 의한 횡격막신경의 전도검사
조선대학교 의과대학 재활의학교실

The aim of this study is to determine the normal values of the phrenic nerve conduction using magnetic stimulation of ipsilateral cervical roots in 30 healthy male adults.

In the present study, phrenic nerve function was evaluated by transcutaneous magnetic stimulation at the ipsilateral C3-4 level and recording the diaphragmatic action potential with surface electrode placed at the ipsilateral eighth-ninth intercostal space.

The results were as follows:

1) The mean latency was 9.3±1.0 msec at right, 9.3±0.7 msec at left, there was no significant difference between both sides.

2) The mean amplitude was 432±150μV at right, 456±141μV at left, there was no significant difference between both sides.

3) There was no significant correlation between the latency and the amplitude and variables such as age, sitting height and chest circumference.

Key Words: Phrenic nerve, Magnetic stimulation, Cervical roots


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