Guan Q, Li S, Li X, Yang H P, Wang Y, Liu X Y
Department of Pediatrics, Peking University First Hospital, Beijing 100034, China.
Zhonghua Er Ke Za Zhi. 2016 Nov 2;54(11):823-828. doi: 10.3760/cma.j.issn.0578-1310.2016.11.007.
To evaluate the feasibility of using amplitude-integrated electroencephalogram (aEEG) to identify epileptic seizures by physicians and nurses in pediatric intensive care unit (PICU) independently. Six testees (two PICU physicians versus one EEG physician and two PICU nurses versus one EEG technician) accepted a short-term training, then interpreted aEEG in a single blinded way. These aEEG recordings with synchronous VEEG monitoring were done from January 2013 to May 2015 in PICU. The testees should recognize and mark both the seizure type and the seizure duration from the two-channel recorder (C3/C4) of aEEG (short-term seizure or status epilepticus (SE)). Using raw VEEG monitoring as a gold standard to determine a seizure, the accuracy, missing and error rate of each testees were confirmed, and the reasons of the latter two situations were analyzed by rank sum test and inter-testee agreement () . Eighty-two aEEG recordings from 56 patients were interpreted. Thirty-two recordings had 141 epileptic seizures confirmed by VEEG, including 119 short-term seizures and 22 SE. There were 50 recordings without seizure. As for the short-term seizures, the average accuracy of 6 testees by aEEG alone was (66±4)%. The accuracy for SE was 100% in three testees and 95% in the other three. Missing rate of the seizures were 24.1%-32.6% in all 6 testees. Those missed seizures were all short-term (duration less than 20 seconds) but one SE. The average error rate was (19±9) times (=0.000). These false interpretations were misunderstanding, many kinds of artifacts were regarded as epileptic seizures. The accuracy and missing rate among the testees had no significance(=0.930, 0.996), but the error rate had(=0.000). The inter-testee agreement () between two physicians in PICU and the EEG doctor were 0.700 and 0.687 respectively (<0.01), which is good. As for two nurses and the EEG technician, the inter-testee agreement () was 0.705 and 0.396 respectively (<0.01). Most of the seizures especially status epilepticus can be detected by PICU staff after short term training. The accuracy of identification of epileptic seizures was similar among observers from PICU and EEG, although some short-term seizures may be missed, and artifacts are mistaken.It's necessary to communicate with EEG doctors and compare with the row VEEG when physicians in PICU find suspicious events.
为了评估儿科重症监护病房(PICU)的医生和护士独立使用振幅整合脑电图(aEEG)识别癫痫发作的可行性。六名受试者(两名PICU医生与一名脑电图医生,以及两名PICU护士与一名脑电图技术员)接受了短期培训,然后以单盲方式解读aEEG。这些同步视频脑电图(VEEG)监测的aEEG记录于2013年1月至2015年5月在PICU完成。受试者应从aEEG的双极记录仪(C3/C4)中识别并标记癫痫发作类型和发作持续时间(短期发作或癫痫持续状态(SE))。以原始VEEG监测作为确定癫痫发作的金标准,确认了每位受试者的准确性、漏诊率和错误率,并通过秩和检验和受试者间一致性分析了后两种情况的原因。对56例患者的82份aEEG记录进行了解读。32份记录中有141次癫痫发作经VEEG确认,包括119次短期发作和22次SE。有50份记录无癫痫发作。对于短期发作,6名受试者单独通过aEEG的平均准确率为(66±4)%。三名受试者对SE的准确率为100%,另外三名受试者为95%。所有6名受试者的癫痫发作漏诊率为24.1%-32.6%。那些漏诊的发作均为短期发作(持续时间小于20秒),但有一次SE除外。平均错误率为(19±9)次(=0.000)。这些错误解读是由于误解,许多伪迹被视为癫痫发作。受试者之间的准确率和漏诊率无显著性差异(=0.930,0.996),但错误率有显著性差异(=0.000)。PICU的两名医生与脑电图医生之间的受试者间一致性分别为0.700和0.687(<0.01),这是良好的。对于两名护士和脑电图技术员,受试者间一致性分别为0.705和0.396(<0.01)。大多数癫痫发作尤其是癫痫持续状态在短期培训后可被PICU工作人员检测到。PICU和脑电图室的观察者对癫痫发作的识别准确率相似,尽管可能会漏诊一些短期发作,并且会将伪迹误判。当PICU医生发现可疑事件时,有必要与脑电图医生沟通并与原始VEEG进行比较。