Ashburn M A, Mitchell L B, Dean D F, String S T, Callahan A
Anaesth Intensive Care. 1985 Nov;13(4):387-91. doi: 10.1177/0310057X8501300410.
Stroke is a potential major complication of carotid endarterectomy and may be caused by cerebral ischaemia or embolisation from the operative site. Conventional EEG monitoring has been used intraoperatively to identify periods of cerebral ischaemia, but this monitoring technique can be difficult to operate and interpret in the operating room. This study reports the use of a new signal analyser, the power spectrum analyser (PSA-1, Neurologics, Inc., Nashville, Tennessee), and its impact on active patient management. Thirty-six patients undergoing carotid endarterectomies were monitored with the PSA-1 in conjunction with routine EEG. Eight patients (22%) showed evidence of ischaemia 22 times on both PSA-1 and routine EEG. At no time did the routine EEG show evidence of ischaemia when the PSA-1 did not. The PSA-1 has proven to be a reliable neurophysiologic monitor for the identification of periods of cerebral ischaemia. Use of this small, easily operated and interpreted machine could enhance safety in operating rooms lacking sufficient resources to use conventional EEG machines.
中风是颈动脉内膜切除术的一种潜在主要并发症，可能由脑缺血或手术部位的栓塞引起。传统脑电图监测已在术中用于识别脑缺血期，但这种监测技术在手术室中操作和解读可能有困难。本研究报告了一种新型信号分析仪——功率谱分析仪（PSA - 1，Neurologics公司，田纳西州纳什维尔）的使用及其对积极的患者管理的影响。36例接受颈动脉内膜切除术的患者同时使用PSA - 1和常规脑电图进行监测。8例患者（22%）在PSA - 1和常规脑电图上均有22次缺血证据。当PSA - 1未显示缺血证据时，常规脑电图在任何时候都未显示缺血证据。事实证明，PSA - 1是一种用于识别脑缺血期的可靠神经生理监测仪。使用这种小型、易于操作和解读的仪器可以提高在缺乏足够资源使用传统脑电图仪的手术室中的安全性。
