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目的：观察发热性惊厥患儿是否伴有脑血流动力学异常。方法：采用经颅多普勒（ＴＣＤ）超声技术，测定 ３６例发热性惊厥患儿（观察组）及 ４５名健康儿童（对照组）脑底动脉血流速值和频谱形态。结果：观察组的动脉血流速值收缩期最大峰流速（Ｖｓ）、舒张末期峰流速（Ｖｄ）和平均峰流速（Ｖｍ）与对照组比较均有显著性差异（Ｐ＜０．０５）。观察组的大脑中动脉血流速值异常率为１００％。结论：发热性惊厥患儿惊厥时脑血流动力学异常。ＴＣＤ超声技术可用于动态观察惊厥后患儿脑供血情况。
Objective: To observe whether children with febrile seizures have abnormal cerebral hemodynamics. Methods: Transcranial Doppler (TCD) ultrasound was used to determine the cerebral blood flow velocity and spectral shape in 36 children with febrile seizures (observation group) and 45 healthy children (control group). Results: The maximal peak systolic velocity (Vs), end diastolic peak velocity (Vd) and mean peak velocity (Vm) of arterial blood flow velocity in observation group were significantly different from those in control group (P <0.05). In the observation group, the abnormal rate of middle cerebral artery blood flow velocity was 100%. Conclusions: Cerebral hemodynamic abnormalities in children with febrile seizures. TCD ultrasound technology can be used to dynamically observe the cerebral blood supply in children with convulsions.