Chase C R, Ashikaga T, Mazuzan J E
Department of Anesthesia, University of Vermont, College of Medicine, Burlington, 05401.
J Clin Monit. 1994 Jul;10(4):251-63. doi: 10.1007/BF02899511.
The objective of our study was to assess the acceptability of a proposed user interface to visually interfaced computer-assisted anesthesia record (VISI-CAARE), before the application was begun. The user interface was defined as the user display and its user orientation methods.
We designed methods to measure user performance and attitude toward two different anesthesia record procedures: (1) the traditional pen and paper anesthetic record procedure of our hospital, and (2) VISI-CAARE. Performance measurements included the reaction speed (identifying the type and time of an event) and completion speed (describing the event). Performance also included accuracy of the recorded time of the event and accuracy of the description. User attitude was measured by (1) the physician's rating on a scale of 0 to 9 of the potential usefulness of computers in anesthesia care; (2) willingness to use the future application in the clinical environment; and (3) user suggestions for change. These measurements were used in a randomized trial of 21 physicians, of which data from 20 were available.
After exposure to VISI-CAARE, the experimental subjects' ranking of computer usefulness in anesthesia care improved significantly (4.2 +/- 1.1 to 7.6 +/- 1.5, p = 0.0001), as did controls' (5.2 +/- 2.6 to 8 +/- 1.5, p = 0.0019). All the volunteers were willing to try the proposed prototype clinically, when it was ready. VISI-CAARE exposure was associated with faster and more accurate reaction to events over the traditional pen and paper machine, and slower and more accurate description of events in an artificial mock setting. VISI-CAARE 1.1 demonstrated significant improvements in both reaction speed and completion speed over VISI-CAARE 1.0, after changes were made to the user display and orientation methods.
With graphic user interface prototyping environments, one can obtain preliminary user attitude and performance data, even before application programming is begun. This may be helpful in revising initial display and orientation methods, while obtaining user interest and commitment before actual programming and clinical testing.
我们研究的目的是在视觉界面计算机辅助麻醉记录（VISI - CAARE）应用开始前，评估其拟议用户界面的可接受性。用户界面定义为用户显示屏及其用户导向方法。
我们设计了方法来测量用户对两种不同麻醉记录程序的操作表现和态度：（1）我院传统的纸笔麻醉记录程序，以及（2）VISI - CAARE。操作表现测量包括反应速度（识别事件类型和时间）和完成速度（描述事件）。操作表现还包括事件记录时间的准确性和描述的准确性。用户态度通过以下方式测量：（1）医生对计算机在麻醉护理中潜在有用性的0至9分评分；（2）在临床环境中使用未来应用的意愿；以及（3）用户提出的改进建议。这些测量用于对21名医生进行的随机试验，其中20名医生的数据可用。
接触VISI - CAARE后，实验对象对计算机在麻醉护理中有用性的评分显著提高（从4.2±1.1提高到7.6±1.5，p = 0.0001），对照组也是如此（从5.2±2.6提高到8±1.5，p = 0.0019）。所有志愿者都愿意在拟议的原型准备好后在临床上试用。与传统的纸笔记录方式相比，接触VISI - CAARE能更快、更准确地对事件做出反应，在人工模拟环境中对事件的描述则更慢、更准确。在对用户显示屏和导向方法进行更改后，VISI - CAARE 1.1在反应速度和完成速度方面均比VISI - CAARE 1.0有显著提高。
通过图形用户界面原型环境，甚至在应用程序编程开始之前，就可以获得初步的用户态度和操作表现数据。这可能有助于修改初始的显示和导向方法，同时在实际编程和临床测试之前获得用户的兴趣和认可。
