Application Of Cortical Somatosensory Evoked Potentials In Microsurgery Of Spinal Tumors

Objective In this study, we assessed the value of cortical somatosensory evoked potentials (CSEP) intraoperative monitoring of spinal disorders.Methods Thirty-three patients with intramedullary or extramedullary occupying were performed CSEP intraoperative monitoring. Compared the intraoperative datas of CSEP with longer duration which varied extent was larger and more stable to the value narcotic induced as well as observed functional postoperative rehabilitation, we studied the relationship between functional rehabilitation of the spinal cord and the change of CSEP.Results Amplitude declining and latency prolonging of CSEP can be found often during dissection of intramedullary or extramedullary occupying. The changes of CSEP P40,N20 were associated with postoperative spinal cord function indeedly , which can be use for spinal cord function monitoring sensitive indicators; the result show changes of intramedullary significantly superior to extramedullary .Conclusion During the operation of intramedullary or extramedullary occupying , CSEP intraoperative monitoring can timely, sensitively reflect changes of spinal function and increase the security of the operation, reduce complications of operation ; Changes of CSEP is relevant of the neurological function, It can evaluate prognosis pliminarily. It is important to identify the CSEP changes and the false positive, false negative as early as possible. We must avoid false...