Department of Neurological, Neuropsychological, Morphological and Movement Sciences, University of Verona, Italy.
Clin EEG Neurosci. 2013 Jul;44(3):227-31. doi: 10.1177/1550059412466549. Epub 2013 Mar 26.
Subclinical rhythmic electroencephalogram discharge of adults (SREDA) is an electroencephalogram (EEG) pattern of uncertain significance, which occurs without any correlation with epilepsy. It resembles epileptiform activity, and is therefore likely to be misinterpreted as an authentic epileptiform pattern. We describe the occurrence of SREDA during stage II nonrapid eye movement (NREM) sleep and discuss the diagnostic difficulties that may arise when such a pattern is encountered during sleep EEG recordings. SREDA may occur during sleep, leading to difficulties in correct identification of this pattern, as the patient is unconscious and unable to report any symptoms. Although there are rather distinctive EEG features, the lack of changes in electrocardiogram rhythm and the absence of ocular/muscular artifacts suggest a nonepileptic phenomenon. The ultimate diagnosis, and the correct identification of SREDA, may be achieved by a comparison of EEG features between the pattern occurring during sleep and that recorded in the awake state.
成人亚临床节律性脑电图放电（SREDA）是一种脑电图（EEG）模式，其意义不确定，与癫痫无关。它类似于癫痫样活动，因此很可能被误解为真实的癫痫样模式。我们描述了 SREDA 在第二阶段非快速眼动（NREM）睡眠期间的发生，并讨论了在睡眠脑电图记录中遇到这种模式时可能出现的诊断困难。SREDA 可能在睡眠期间发生，导致难以正确识别这种模式，因为患者无意识，无法报告任何症状。尽管 EEG 特征相当明显，但心电图节律无变化且无眼/肌伪迹提示非癫痫现象。最终诊断和 SREDA 的正确识别可以通过比较睡眠期间出现的脑电图特征与清醒状态下记录的脑电图特征来实现。
