静脉输液中应用不同压力源封管效果观察

目的寻找静脉输液合适的封管压力源，减轻患者痛苦，节约医疗资源。方法对自愿受试的180例患者，采用自行研制的双蝶式多功能穿刺针进行静脉输液，分别应用1ml、2ml、5ml及10ml注射器(不同压力源)推注去离子水进行封管，观察延长管内回血情况。结果采用1ml注射器推注去离子水封管时，其压力与静脉内的压力持平，穿刺针延长管内回血长度最短或无回血。结论采用双蝶式多功能穿刺针进行静脉输液时，宜选用1毫升注射器封管。

Study of the effects of different tube blocking pressure in intravenous transfusion

Objective To find suitable pressure of tube blocking,alleviate the patients' discomfort and save medical resources.Methods 180 volunteer patients accepted intravenous tranfusion by self made multifunctional puncture needle.Deionized water was used by different types of syringes to block the extend tube and the blood reflow was observed simultaneously.Results The intravenous pressure was balanced with the tube when blocked by one milliliter syringe.Moreover,the blood reflow in extend tube was the shortest.Conclusion One milliliter syringe was optimal to block the tube when multifunctional puncture needle was applied to intravenous transfusion.