馬尾伝導検査法(神経内科学教室岩田誠教授退任記念特別号)

概要

論文の詳細を見る
Examination of cauda equina conduction is a new method evaluating the proximal part of the motor nerve using percutaneous electrical stimulation over the cauda equina. Compound muscle action potentials (CMAPs) are recorded from the anterior tibial muscle by stimulating the inter-vertebral spaces on Thl2/Ll and L4/5. Parameters of cauda equina conduction are CMAPs latencies, conduction time in the cauda equina which is the latency difference between Thl2/Ll and L4/5, and the conduction velocity of the cauda equina which is calculated by the distance between Thl2/Ll and L4/5 and conduction time. While the examination of peripheral nerve conduction is generally evaluated by the distal site of peripheral nerve, combination with cauda equina conduction would make the function of the motor nerve to be evaluated from the proximal through the distal sites. In inflammatory demyelinating polyneuropathies in which the proximal part of the motor nerve is frequently injured, cauda equina conduction shows significantly lower value compared with healthy people. Cauda equina examination is useful for evaluating the therapeutic efficacy in the polyneuropathies. This examination is also applicable for cases in which F waves are not evoked, indicating, that this new examination may be clinically useful for evaluating cauda equina lesions.
東京女子医科大学の論文
2008-02-25