Results :The occlusion rate of superficial vein detained needle was 22.1% in group of normal saline, but 7.4% in group of heparin sodium(P<0.05).

结果：生理盐水封管组浅静脉留置针阻管发生率为22.1%，而肝素钠封管组为7.4%，后者显著少于前者（P<0.05）。

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Results :The occlusion rate of superficial vein detained needle was 22.1% in group of normal saline, but 7.4% in group of heparin sodium(P<0.05).

结果：生理盐水封管组浅静脉留置针阻管发生率为22.1%，而肝素钠封管组为7.4%，后者显著少于前者（P<0.05）。

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