改良封管方法对静脉留置针堵管发生率的影响

Effects of modified tube sealing technique on prevention of the vein detained needle from blocking

目的：探讨减少静脉留置针回血、堵管的有效方法。方法：将2014年7～10月在我院消化科符合实验条件的患者随机分为观察组和对照组，各50例，观察组在脉冲式缓慢推注正压封管基础上采用抓取关闭夹外侧的延长管推入关闭夹；对照组在脉冲式缓慢推注正压封管基础上，采用习惯做法：用拇指抵住关闭夹一端，食指、中指分别置于关闭夹两侧，将延长管送入关闭夹。比较两组封管后第1天、第2天的回血例数及堵管例数。结果：第1天封管后，观察组、对照组的回血率分别为0％（0／50）、98％（49／50），P＜0．01，堵管率分别是0％（0／50）、12％（6／50），P＝0．03，差异有统计学意义；第2天封管后，观察组和对照组的回血率分别为0％（0／50）、100％（44／44）（P＜0．01），堵管率分别为2％（1／50）、20．5％（9／44）（P＜0．01），差异有统计学意义。观察组的堵管率明显下降，封管效果优于对照组。结论：抓取关闭夹外侧的延长管推入关闭夹的方法明显减少回血次数，并降低了堵管率。

Objective：To assess the efficacy of a modified tube sealing technique in prevention of the venous retention needle from blocking and blood backflow.Methods：The eligible patients were allocated to experimental group and control group （ n=50 for each） .The experimental group underwent mod-ified tube sealing technique and the control group,conventional approach.The two groups were compared concerning the incidences of blood backflow and blocked needle at the first and the second day of tube sealing.Results：The incidences of blood backflow and blocked tube were 0%（0/50）,98%（49/50） and 0%（0/50）,12%（6/50） at the first day of tube sealing（P〈0.01,P=0.03）,and 0%（0/50）,100%（44/44）,2%（1/50）,20.5%（9/44） at the second day（P〈0.01）,respectively for the experimental group and control group.The experimental group had significantly lower events of blocked tube.Conclusion：The modified tube sealing operation can significantly reduce the incidence of blood backflow and blocked tube .