观察注药3天内患肢和健肢的痛阈改变，并于第3天观察其脊髓背表面电位（CDP）的变化。
After the injection , cord dorsal potential(CDP) was determined on the 3rd day while heat pain threshold was measured each day.
有的家长或缺少血管疾病经验的医生可将增粗、增长的患肢误认为正常，却认为健侧肢体异常，从神经系统查找原因。
Some parents or lack of vascular disease experienced doctors can be increased and the limb as normal growth, but think the contralateral limb abnormalities, find the reasons from the nervous system.
有的家长或缺少血管疾病经验的医生可将增粗、增长的患肢误认为正常，却认为健侧肢体异常，从神经系统查找原因。
Some parents or lack of vascular disease experienced doctors can be increased and the limb as normal growth, but think the contralateral limb abnormalities, find the reasons from the nervous system.
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