目的探讨浅静脉留置针保护膜最佳更换时间。
Objective \ to investigate the best time to change the adhesive membrane of the superficial vein catheter.
方法：观察139例浅静脉留置针临床使用效果，分析其影响因素。
Methods: We observe the effect of using Intravenous Catheter System with PRN 139 cases and analyse the factors which influence it.
目的分析老年慢性病患者浅静脉留置针保护膜更换时间与并发症的发生率。
Objective to analyze the elderly with chronic diseases Venous Indwelling Needle protective film to replace the time and the incidence of complications.
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