(041) Comparison of the accuracy of three types of infusion pump in dopamine delivery Boyoung Kim1, Jinwoo Park1, Seongjoo Park1, Sunghee Han1, Misun Lim1, Jeehye Chung2, Kyounghee Moon3 1. Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Republic of Korea 2. Korea University College of Health Sciene, Seoul, Republic of Korea 3. Seoul National University College of Engineering, Seoul, Republic of Korea Background Infusion pump that deliver drug accurately and precisely is crucial. peristaltic pump: not guarantee at a lower rate. syringe pump: more precise, but shows 'start-up delay’ cylinder pump: minimal 'start-up delay’ (Anyfusion V-100, Meinntech, Korea) To compare the 'start-up delay' characteristics and accuracy of dopamine delivery among the 3 types of infusion pumps in a laboratory setting.

Methods Dopamine premix in bag or in 50-ml syringe peristaltic pump syringe pump cylinder pump Anyfusion V-100 Methods Dopamine premix in bag or in 50-ml syringe Infusion rate of 10 ml/hr 'star-up delay’: time delay between the start button pressed and an actual first drop made Accuracy of delivery: the volume of actually delivered drug was measured at every 1 min for an hour Data are presented as median(interquatile) and analyzed with Kruskal Wallis test. (n=5)

Results Syringe pump showed longest start-up delay and cylinder pump showed the shortest. S 28.0(15.0) vs. P 13.0(12.5) vs. C 5.0(3.0); sec. P=0.004 The difference between actually delivered volume and expected delivery volume was significantly larger in peristaltic pump. Conclusions In conclusion, cylinder pump shows shorter star-up delay in comparison to syringe pump, and delivers more accurate volume of drug in comparison to peristaltic pump. This Research was supported by Korea Health Industry Development Institute