观察一次穿刺成功率。
结果改良后一次穿刺成功率提高；输液一次完成率提高。
Results Success rate of puncture and one-time completion rate were improved after taking measures.
目的解除患儿的恐惧害怕等心理，提高静脉输液一次穿刺成功率。
Objective To dispel the fear of the children patients for the purpose of raising success rate at venous transfusion puncture.
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