Observed the success rate of puncture one time.
观察一次穿刺成功率。
Results Success rate of puncture and one-time completion rate were improved after taking measures.
结果改良后一次穿刺成功率提高；输液一次完成率提高。
To contrast to success rate of puncture, one-time completion rate and satisfaction rate before and after taking measures.
对比改良前后静脉穿刺成功率、输液一次完成率、满意率。
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