| Comparison of the yields of different electroencephalography recording durations in patients with epilepsy and seizure-like event |
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| Citation of this paper:LUO Wen-yi,DING Jing*,FENG Yu,ZHANG Yi-jun,WANG Xin.Comparison of the yields of different electroencephalography recording durations in patients with epilepsy and seizure-like event[J].Chinese Journal of Clinical Medicine,2018,25(4):565-567 |
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| Abstract: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 (P<0.05). 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 (P<0.05). 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. |
| keywords:epilepsy electroencephalography epileptiform discharge |
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