Objective To study the level of serum sodium in children with febrile convulsion.Methods Serum sodium of 86 FC children (FC group) and 40 febrile children without convulsion (control group) was detected by the method of electrode selected by ion.Results Serum sodium of FC group and control group was 133.56± 2.75mmol/L,141.08± 2.66mmol/L respectively (p<0.001). Serum sodium of children with repeated convulsions (n="28)" was significantly lower than those with solitary convulsion (n="68)" (132.28± 3.52 vs. 133.92± 2.08, p<0.01). Conclusion FC children had low levels of serum sodium that had positive correlation with recurrence rates of convulsion.%目的探讨小儿热性惊厥(febrileconvulsion,FC)与血钠水平的关系。方法用离子选择电极法检测86例FC患儿和40例发热无惊厥患儿的血钠值。结果血钠水平FC组(86例)133.56±2.75mmol/L，与对照组(40例)141.08±2.66mmol/L相比显著降低(P<0.01）；多次惊厥组（28例）132.28±3.52mmol/L与单次惊厥组（58例）133.92±2.08mmol/L比较也显示降低（P<0.01）。结论FC患儿血钠水平降低，血钠浓度越低惊厥的再发率越大。
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