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目的研究脑电图对于急性病毒性脑炎所致精神障碍的辅助诊断价值。方法在入院3d内对临床拟诊为急性病毒性脑炎所致精神障碍的病人分别进行脑电图、头颅CT、磁共振(MRI)检查,其中有48例确认为病毒性脑炎所致精神障碍,分析病人的头颅CT、磁共振(MRI)以及中度或重度异常脑电图的几率,并进行比较。正常或轻度异常及电图在1wk后进行复查。结果头颅CT的异常率为12.50%(6/48),中度或重度异常脑电图的发生率为66.67%(16/48),采用配对X2检验比较脑电图与两种影像学方法(头颅CT、MRI)有显著性差异(P<0.05);脑电图16例轻度异常者1wk后有4例转为中度或重度异常。讨论脑电图对急性病毒性及炎所致精神障碍有重要的辅助诊断意义,比头颅MR等影像学检查有更高的敏感性。另外,脑电图轻度异常不能排除急性病毒性及炎所致精神障碍。
Objective To study the value of EEG in the diagnosis of mental disorders caused by acute viral encephalitis. Methods EEG, CT and MRI were performed in patients who were clinically diagnosed with mental disorders due to acute viral encephalitis on admission. Among them, 48 cases were confirmed as viral encephalitis Obstacles, analysis of the patient’s head CT, magnetic resonance imaging (MRI) and moderate or severe abnormal EEG odds, and compared. Normal or mild abnormalities and electrograms in 1wk after the review. Results The abnormal rate of cranial CT was 12.50% (6/48), and the incidence of moderate or severe abnormal EEG was 66.67% (16/48). EEG was compared with X2 test to compare the two methods Cranial CT, MRI) were significantly different (P <0.05); EEG 16 cases of mild abnormal 1wk after 4 were converted to moderate or severe abnormalities. Discussion EEG on acute viral and psychiatric disorders caused by inflammation have important diagnostic significance, higher than MR imaging and other studies have a higher sensitivity. In addition, mild abnormal EEG can not rule out acute viral and inflammatory-induced mental disorders.