JRM Vol.24 No.3 pp. 452-457
doi: 10.20965/jrm.2012.p0452


Drip Adjuster: Use of an LED Display to Manually Adjust Intravenous Fluid Infusion Rate

Takeshi Ando*,**, Noriyoshi Tanaka*,***, Kenji Yamada*,
and Yuko Ohno*

*Robotics and Design for Innovative Healthcare, Graduate School of Medicine, Osaka University, 1-7 Yamada-oka, Suita, Osaka 565-0871, Japan

**Graduate School of Creative Science and Engineering, Faculty of Science and Engineering, Waseda University, 59-309, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555, Japan

***The Nursing Department, Tokai University Hospital, Isehara, Kanagawa, Japan

October 10, 2011
December 28, 2011
June 20, 2012
nurse, infusion, medical error, safety management, light navigation
Errors in intravenous infusion rates are common at hospitals. A previous study found that actual infusion rates differ significantly from those instructed by doctors. The technique used to adjust the drip rate using a watch is a difficult skill to learn. In this article, we present our recently developed drip adjuster, which makes it easier for a nurse, for example, to adjust the drip rate using an LED display controlled by an Arduino microcontroller. We analyzed a high-speed video of falling infusion drops and imitated dripping by changing the brightness and positioning of light displayed by a row of five LEDs, enabling nurses to easily synchronize LED lighting with the growth and falling of droplets. We then evaluated the accuracy of the drip rate when six nurses used the drip adjuster versus using a watch. We found a significant difference in accuracy between the two methods, with a dramatic increase from 40% accuracy using a watch to 83% accuracy using the drip adjuster in the achievement of an accurate drip rate. The drip adjuster is a simple, effective device that can be used to assist in adjusting the drip rates of intravenous infusions.
Cite this article as:
T. Ando, N. Tanaka, K. Yamada, and Y. Ohno, “Drip Adjuster: Use of an LED Display to Manually Adjust Intravenous Fluid Infusion Rate,” J. Robot. Mechatron., Vol.24 No.3, pp. 452-457, 2012.
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