Usability Evaluation of a New User Interface for an Infusion Pump Developed with a Human Factors Approach

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Abstract
In medical care, the infusion pump is one of the most common pieces of technical equipment and it is often involved in handling-incidents. In order to improve usability and reduce errors, a new user interface for an infusion pump has been designed with a human factors approach. The purpose of this study was to determine if the new interface could reduce the number of handling-errors and problems, and to find out if the interface needed to be further developed. For this purpose usability tests were performed with nurses at three different hospital wards. The results showed that the number of mode errors and arisen problems were reduced for the new interface compared to the existing interface. However, the usability tests showed that there is still a potential to improve the new interface further. The results also showed that the number of errors was very high when handling these infusion pumps. This is an indication of that this area is important to study further. A conclusion was that usability testing is an important complement when redesigning interfaces with a human factors approach.

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