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Journal of the Korean Academy of Rehabilitation Medicine 1996;20(3):22.
Somatosensory Evoked Potential Monitoring during Cerebral Aneurysm Operation
Yoon Tae Kim, M.D., Sae Yoon Kang, M.D., Dae Heon Song, M.D. , Soon Yong Kwon, M.D.
Department of Rehabilitation Medicine, Catholic University Medical College
뇌동맥류 절제술시 체성감각유발전위를 이용한 수술중 감시
김윤태, 강세윤, 송대헌, 권순용
가톨릭대학교 의과대학 재활의학교실
Abstract

Intraoperative somatosensory evoked potentials(SEPs) are widely used for the early detections of cerebral ischemia during temporary occlusive procedures of the parent vessels in aneurysm surgery. Somatosensory evoked potentials in response to median nerve stimulation were monitored during 20 aneurysm procedures. Base line SEPs were obtained shortly after the induction of general anesthesia and were recorded continuously during the operation. Absolute latency and cortical SEP amplitude were subsequently determined. Statistical analysis confirmed that there were significant changes in latency and amplitude of cortical SEP after aneurysm clipping during the course of operation.

The false positive and false negative rate were 5% and 15%, respectively, where SEP latency increased by more than 10% or SEP amplitude decreased by more than 50% after the time of anesthetic induction. Monitoring of the SEPs during intracranial aneurysm surgery can help the surgeon in the management of proximal vessel control and reduce the morbidity of aneurysm operation.

Key Words: Somatosensory evoked potential(SEP), Intraoperative monitoring, Cerebral aneurysm


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