The experimental study of safe vertical displacement for minimal infusion rate change of syringe pumps

VernacularTitle:微量注射泵垂直移动后注出率改变最小的安全移动高度的实验室研究
Author: Qiaoduan LUO ; Zhijiang MO ; Jinzhen YAO ; Jing HE ; Songtao LIU ; Jianming HUANG
Publication Type:Journal Article
Keywords: Syringe pump; Vertical displacement; Infusion rate change; Safe displacement height
From: Chinese Journal of Practical Nursing 2010;26(29):11-13
CountryChina
Language:Chinese
Abstract: Objective To find the safe vertical displacement for minimal infusion rate change of syringe pumps as the theoretical guidance for moving pumps. Methods The infusion volume within 1 minute after none and vertically moving 15, 25, 35, 50 cm of the pumps (microinfusion pump WZ-50C、WZ-50C2、BRAUN perfusor compact) at 10 ml/min were weighted and compared by the electronic balance. Results Significant differences of the infusion rate were detected. The difference of average infusion volume within 1 minute after vertically moving 15, 25, 35, 50 cm and non-movement were 0.004 (minimal),0.017, 0.033, 0.046ml. The lowest infusion curve of 15cm displacement stretches slightly above the horizontal plane until the inflexion in the section graph, leading to steeper in accordance with the increasing vertical displacement of the pumps,which implied the following drastic increase in infusion rate. Conclusions The minimal infusion change is obtained at 15cm, thus becomes the safe displacement height and the inflexion point of further soaring changes.