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首页> 外文期刊>Journal of child neurology >EEG Duration: The Long and the Short of It.
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EEG Duration: The Long and the Short of It.

机译：脑电图持续时间：它的长短。

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Current American Clinical Neurophysiology Society guidelines require a minimum of 20 minutes of artifact-free EEG recording; however, the optimum duration for routine EEGs is not established. Our hypothesis was that an EEG recording of 40 minutes' duration would yield more information than a 20-minute EEG in capturing epileptiform abnormalities and in obtaining sleep. We retrospectively studied 150 consecutive EEGs of 40 minutes' duration performed at St Christopher's Hospital for Children. Although the majority (89%) of interictal EEG abnormalities can be identified within the first 20 minutes of a routine EEG, extending the time of a routine EEG increases the yield significantly by identifying an additional 11% of abnormal studies (P = .0001), precluding the need for further long-term monitoring in these patients. Forty-three percent of interictal epileptiform abnormalities were found during sleep. We recommend that routine EEGs be performed for 40 minutes, whenever possible, to improve yield in a cost-effective manner.
机译：当前的美国临床神经生理学会指南要求至少20分钟的无伪影EEG记录;但是，常规脑电图的最佳持续时间尚未确定。我们的假设是，持续20分钟的EEG记录在捕获癫痫样异常和获得睡眠方面会比20分钟的EEG产生更多的信息。我们回顾性研究了在圣克里斯托弗儿童医院进行的150次连续40分钟持续时间的脑电图。尽管大多数（89％）的发作期EEG异常可以在常规EEG的前20分钟内被识别出，但是延长常规EEG的时间可以通过识别另外11％的异常研究来显着提高收率（P = .0001）排除了对这些患者进行进一步长期监测的需要。睡眠期间发现百分之四十三的发作期癫痫样异常。我们建议在可能的情况下，定期进行40分钟的脑电图检查，以节省成本的方式提高产量。

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