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Preliminary research on evoked potential monitoring during intracranial aneurysm surgery

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF NEUROSURGERY
Issue:
8
DOI:
10.3760/cma.j.issn.1001-2346.2011.08.016
Key Word:
颅内动脉瘤;诱发电位;监测;显微外科手术;Intracranial aneurysms;Evoked potentials;Monitoring;Microsurgery

Abstract: Objective To explore the application of intraoperative neuroelectrophysiological monitoring on somatosensory evoked potentials (SEP), brainstem auditory evoked potentials (BAEP) and motor evoked potentials (MEP) during intracranial aneurysm surgery.Methods SEP, BAEP or MEPs were monitored during operations on 16 patients with intracranial aneurysms.The relationship between the intraoperative changes of electrophysiological signals and the postoperative outcomes of neurological deficits was evaluated.Results 11 patients without abnormal intraoperative electrophysiological signal changes demonstrated no new neurological deficits after surgery.However, in the left 5 patients, abnormal changes of intraoperative electrophysiological signals were detected.Among these 5 patients, 4 with abnormal electrophysiological signals which were not recovered intraoperatively demonstrated new developed functional deficits immediately after surgery.Conclusion During intracranial aneurysm surgery, the monitoring on SEP, MEP and BAEP is beneficial not only to timely detecting neurological functional deficits resulted from intraoperative cerebral ischemia, but also to properly guiding surgical manipulation, and to reliably predicting postoperative outcome as well.

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