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《Chinese Journal of Clinical Medicine》 2018-04
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Comparison of the yields of different electroencephalography recording durations in patients with epilepsy and seizure-like event

LUO Wen-yi;DING Jing;FENG Yu;ZHANG Yi-jun;WANG Xin;Department of Neurology,Zhongshan Hospital,Fudan University;  
Objective:To compare the yields of pathological discharges or waves in different electroencephalography(EEG)recording durations.Methods:One hundred and twenty-five patients diagnosed with epilepsy or seizure-like event in our hospital from May 2015 to May 2017 were enrolled.All the patients underwent a 2-hour 21-channel EEG examination(according to the international 10-20 system).Yields of epileptiform discharges(EDs)and pathological slow waves(SWs)were compared between the first 15 minutes,30 minutes,1 hour,and 2 hours in the recording duration.Results:The yields of EDs were 50.40% in the 15-min group,62.40% in the 30-min group,71.29% in the 1-h group,and 75.20% in the 2-h group.The yields of EDs in the 1-h and 2-h groups were higher than those in the 15-min group(P0.05).No obvious difference was found between the 2-h and 1-h group.The yields of sporadic spikes,sharps,spike-and sharp-slow complexes were 44.00%in the 15-min group,57.60%in the 30-min group,66.40%in the 1-h group,and 69.60%in the 2-h group.The yields in the 30-min,1-h,and 2-h groups were higher than those in the 15-min group(P0.05).No obvious difference was found between the 2-h and 1-h groups.No significant differences were observed in the yields of paroxysmal,focal,and diffused SWs in different durations.Conclusions:Yields of EDs in different EEG recording durations differed significantly in patients with epilepsy and seizure-like event,especially for the sporadic spikes,sharps,spike-and sharp-slow complexes.One hour and over recording yielded a significant higher incidence of EDs.No obvious difference was found between the 1-h and 2-h recordings.
【Fund】: 上海市科学技术委员医学引导类项目(17411962500)~~
【CateGory Index】: R742.1;R741.044
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