Silbert B S, Koumoundouros E, Davies M J, Cronin K D
Department of Anaesthesia, St. Vincent's Hospital, Melbourne, Australia.
Anaesth Intensive Care. 1989 Aug;17(3):298-304. doi: 10.1177/0310057X8901700310.
A processed electroencephalogram (EEG) produced by the Lifescan monitor (Neurometrics), was compared to awake neurological assessment for detecting cerebral ischaemia in seventy patients undergoing carotid endarterectomy under cervical plexus block. Of the six patients demonstrating neurological signs on cross-clamping the carotid, five displayed simultaneous EEG changes, four being detected during surgery, and one being detected after reviewing the EEG postoperatively. Another four patients displayed EEG changes indicative of ischaemia but unassociated with neurological signs. A further patient displayed contralateral intraoperative EEG changes. Hypotension resulted in one EEG change and two cases were associated with technical difficulties with the monitor. The presence of false negatives, possible false positives, technical errors and subjective interpretation associated with the processed EEG make it less reliable than awake neurological assessment for the detection of cerebral ischaemia.
将Lifescan监测仪（Neurometrics）生成的处理后的脑电图（EEG）与清醒神经学评估进行比较，以检测70例在颈丛阻滞下行颈动脉内膜切除术患者的脑缺血情况。在6例颈动脉交叉钳夹时出现神经学体征的患者中，5例同时出现脑电图变化，4例在手术期间被检测到，1例在术后复查脑电图时被检测到。另外4例患者出现提示缺血的脑电图变化，但与神经学体征无关。另有1例患者出现对侧术中脑电图变化。低血压导致1例脑电图变化，2例与监测仪技术问题有关。处理后的脑电图存在假阴性、可能的假阳性、技术误差和主观解读，这使得其在检测脑缺血方面不如清醒神经学评估可靠。
