Intraoperative Monitoring of the Somatosensory Evoked Potentials and Cerebral Blood Flow During Aneurysm Surgery : Safety Evaluation for Temporary Vascular Occlusion
スポンサーリンク
概要
- 論文の詳細を見る
Somatosensory evoked potentials (SEPs) and cerebral blood flow (CBF) were monitored during temporary vascular occlusion in 67 aneurysm operations to evaluate the usefulness of SEP as an indicator for cerebral ischemia. The SEP N_<20> component completely disappeared during temporary vascular occlusion in 24 cases, 23 of which demonstrated complete recovery following recirculation and had no postoperative neurological sequelae. The only one with postoperative sequelae demonstrated rapid, within 1 minute, loss of N_<20> followed by no recovery. Another eight cases showed prolongation of central conduction time during vascular occlusion and had no postoperative sequelae. The SEP N_<20> attenuation reflected the CBF reduction in the middle cerebral artery (MCA) territory during MCA occlusion. However, CBF changes in the internal carotid artery (ICA) territory during ICA occlusion greatly varied. No detectable changes in SEP were found during anterior cerebral artery occlusion for anterior communicating artery aneurysms. This study indicates that intraoperative SEP monitoring is useful to detect ischemia in the MCA territory and that rapid disappearance of the N_<20> component is a danger signal.
- 日本脳神経外科学会の論文
- 1991-06-15
著者
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Mizoi Kazuo
Department Of Neurosurgery Akita University Graduate School Of Medicine
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Mizoi Kazuo
Department Of Neurosurgery Kohnan Hospital
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Yoshimoto Takashi
Division Of Neurosurgery Institute Of Brain Diseases Tohoku University School Of Medicine
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