Variety of the Wave Change in Compound Muscle Action Potential in an Animal Model

Asian Spine Journal

Yukihiro Matsuyama¹  Masayoshi Morozumi²  Yoshimoto Ishikawa²  Mikito Tsushima²  Naoki Ishiguro²  Satoshi Tanaka²  Akiyuki Matsumoto²  Shiro Imagama²  Tetsuro Hida²  Kei Ando²  Kazuyoshi Kobayashi²  Kenyu Ito²  Zenya Ito²  Akio Muramoto² 

[1] Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, Nagoya, Japan.;Department of Orthopaedic Surgery, Nagoya University School of Medicine, Nagoya, Japan.;

关键词: Compound muscle action potential;    Morphology change;    Amplitude;   

DOI  :  10.4184/asj.2015.9.6.952

来源: DOAJ

【 摘 要 】

Study DesignAnimal study.PurposeTo review the present warning point criteria of the compound muscle action potential (CMAP) and investigate new criteria for spinal surgery safety using an animal model.Overview of LiteratureLittle is known about correlation palesis and amplitude of spinal cord monitoring.MethodsAfter laminectomy of the tenth thoracic spinal lamina, 2-140 g force was delivered to the spinal cord with a tension gage to create a bilateral contusion injury. The study morphology change of the CMAP wave and locomotor scale were evaluated for one month.ResultsFour different types of wave morphology changes were observed: no change, amplitude decrease only, morphology change only, and amplitude and morphology change. Amplitude and morphology changed simultaneously and significantly as the injury force increased (p<0.05) Locomotor scale in the amplitude and morphology group worsened more than the other groups.ConclusionsAmplitude and morphology change of the CMAP wave exists and could be the key of the alarm point in CMAP.

【 授权许可】

Unknown