抽动障碍患儿432例血铅水平对脑电图活动的影响

目的 探讨抽动障碍患儿血铅水平变化对脑电活动的影响及其发病机制的研究,对比不同血铅水平患儿脑电图变化的特点.方法 对本院2005年1月- 2011年4月临床确诊的432例抽动障碍患儿进行血铅水平及脑电图检测.采用原子吸收光谱分析法测定其血铅水平,并进行t检验.将432例抽动障碍患儿分为3组,Ⅰ组:血铅水平＜50μg·L-1；Ⅱ组:血铅水平50 ～ 100μg·L-1；Ⅲ组:血铅水平＞ 100 μg·L-1.结果 1.Ⅰ组患儿脑电图异常发生率为7.14％(2/28例),Ⅱ组患儿脑电图异常发生率为14.23％(40/281例),Ⅲ组患儿脑电图异常发生率为46.34％(57/123例).Ⅰ组与Ⅱ组脑电图异常发生率比较差异无统计学意义(P＞0.05),Ⅰ组与Ⅲ组脑电图异常发生率比较差异有统计学意义(P＜0.01),Ⅱ组与Ⅲ组脑电图异常发生率比较差异有统计学意义(P＜0.01).2.除年龄≤4岁患儿外,脑电图异常患儿较脑电图正常患儿血铅水平明显升高(P＜0.01,0.05).结论 血铅水平升高会加重抽动障碍患儿的脑功能损伤.及早进行驱铅治疗可能对抽动障碍患儿脑功能损伤的恢复有重要意义.

Influence of Blood Lead Level on Electrical Activity of Brain in 432 Children with Tic Disorder

Objective To study the influence and pathogenesis of blood lead level on electrical activity of brain in children with tic disorder,and to research the characteristics of electroencephalogram(EEG) in children with different concentrations of blood lead. Methods The level of blood lead and EEG were assessed in 432 children with tic disorder from Jan.2005 to Apr.2011.The level of blood lead were examined by atomic absorption spectrophotometry method.Statistical analysis were performed by t-test.According to t...