Usability Evaluation of a Gui Prototype for a Ventilator Machine
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Objective. Information presentation on the monitor screen of ventilator machines affects nurses’ response and decision-making during ventilation treatment. The purpose of this study is to evaluate whether a new GUI (graphical user interface) prototype, the so-called circular display prototype can make deviations easy to detect. Method. A numerical display prototype was made and used as a reference display in the evaluation. Six task scenarios that involved parameter changes were selected to simulate a real situation under volume control (VC) mode during ventilation treatment. Usability tests with the two display designs were carried out in a usability laboratory. Twenty medical nursing students participated as test subjects in the usability tests. Results. The objective results showed that the graphical circular display had an advantage over the numerical display in interpreting parameter changes, but not in reducing the error rates for detecting the number of parameter changes or for forming an overall picture of the patient’s situation. Furthermore, the circular display prototype did not improve the detection time. Conclusions. Although the majority of the test subjects preferred the graphical circular display, the results implied that several aspects of this prototype should be improved in a future development study.
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- Usability Evaluation of a Gui Prototype for a Ventilator Machine
Journal of Clinical Monitoring and Computing
Volume 18, Issue 5-6 , pp 365-372
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers
- Additional Links
- Graphical circular display
- numerical display
- usability tests
- deviation detection
- Industry Sectors
- Author Affiliations
- 1. Department of Product and Production Development, Division of Human Factors Engineering, Chalmers University of Technology, SE-412 96, Göteborg, Sweden
- 2. Department of Product and Production Development, Division of Human Factors Engineering, Chalmers University of Technology, SE-412 96, Göteborg, Sweden