Chung Phillip H, Zhang Jiajie, Johnson Todd R, Patel Vimla L
School of Health Information Sciences, University of Texas, Houston TX, USA.
AMIA Annu Symp Proc. 2003;2003:165-9.
This paper introduces an extended hierarchical task analysis (HTA) methodology devised to evaluate and compare user interfaces on volumetric infusion pumps. The pumps were studied along the dimensions of overall usability and propensity for generating human error. With HTA as our framework, we analyzed six pumps on a variety of common tasks using Norman's Action theory. The introduced method of evaluation divides the problem space between the external world of the device interface and the user's internal cognitive world, allowing for predictions of potential user errors at the human-device level. In this paper, one detailed analysis is provided as an example, comparing two different pumps on two separate tasks. The results demonstrate the inherent variation, often the cause of usage errors, found with infusion pumps being used in hospitals today. The reported methodology is a useful tool for evaluating human performance and predicting potential user errors with infusion pumps and other simple medical devices.
本文介绍了一种经过扩展的层次任务分析（HTA）方法，该方法旨在评估和比较容积式输液泵的用户界面。我们从整体可用性和产生人为错误的可能性这两个维度对这些输液泵进行了研究。以HTA为框架，我们运用诺曼行动理论对六台输液泵在各种常见任务上进行了分析。所引入的评估方法划分了设备界面的外部世界与用户内部认知世界之间的问题空间，从而能够在人机层面预测潜在的用户错误。本文提供了一项详细分析作为示例，并比较了两台不同的输液泵在两项不同任务上的表现。结果表明了当今医院使用的输液泵中存在的固有差异，而这种差异往往是使用错误的根源。所报告的方法是评估输液泵及其他简单医疗设备的人员操作情况并预测潜在用户错误的有用工具。
