期刊
JOURNAL OF CLINICAL NEUROPHYSIOLOGY
卷 24, 期 3, 页码 281-285出版社
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/WNP.0b013e31802ed2d4
关键词
intraoperative monitoring; motor-evoked potential; cortical stimulation; compound muscle action potential
Transcranial electrical stimulation with myogenic motor evoked potential (MEP) recording was used for intraoperative neurophysiologic monitoring in 341 consecutive high-risk neurosurgical or orthopedic procedures. Overall, the success rate for establishing reliable MEP response was 94.8% for upper extremities and 66.6% for lower extremities. The rate was only 39.1% for lower extremities in patients with preoperative motor deficit and up to 81% in neurologically intact adults. Further analysis demonstrated that extremes of age or the presence of a lesion in the spinal cord and motor deficit contributed to failure in obtaining reliable MEPs.
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