Poor usability designed of ventilator user interface can easily lead to human error. In this study, we evaluated the usability design of ventilator maintenance user interface and identified problems related to the usability of user interface that could easily cause human error. Sixteen respiratory therapists participated in this usability study. The usability of the ventilator maintenance user interface was evaluated by participants’ task performance (task completion time, task error rate), physiological workload (eye-fixation duration) and perceived workload (NASA-TLX), and user experience (questionnaire). For task performance, task completion time and task error rate showed significant differences. For task completion time, significant difference was found when conducting ventilator self-test (p < 0.001), replace the breathing circuit (p = 0.047), and check battery status (p = 0.005). For task error rate, the three ventilators showed significant difference (p = 0.012), and the Serov I showed a significantly higher task error rate than the Boaray 5000D (p = 0.031). For workload, the Serov I was associated with higher physiological and perceived workloads than other ventilators (p < 0.05). For user experience, the Boaray 5000D received better scores among the ventilators in terms of ease to maintain, friendly to maintain, and willingness to use (p < 0.05, respectively). Our study adds available literature for usability evaluation of ventilator maintenance user interface. The results indicate that the maintenance user interface of the Boaray 5000D performed better than the other two tested ventilators. Moreover, the study results also proved that eye-fixation duration can be a reliable tool for evaluating the usability of ventilator user interface.

呼吸机用户界面设计的可用性较差，很容易导致人为错误。在本研究中，我们评估了呼吸机维护用户界面的可用性设计，并发现了与用户界面可用性相关的容易导致人为错误的问题。十六名呼吸治疗师参与了这项可用性研究。呼吸机维护用户界面的可用性通过参与者的任务表现（任务完成时间、任务错误率）、生理工作负荷（注视持续时间）和感知工作负荷（NASA-TLX）以及用户体验（问卷）进行评估。对于任务绩效，任务完成时间和任务错误率表现出显着差异。对于任务完成时间，在进行呼吸机自检（p < 0.001）、更换呼吸回路（p = 0.047）和检查电池状态（p = 0.005）时发现显着差异。对于任务错误率，三种呼吸机显示出显着差异（p = 0.012），并且 Serov I 的任务错误率显着高于 Boaray 5000D（p = 0.031）。就工作负荷而言，与其他呼吸机相比，Serov I 与更高的生理和感知工作负荷相关 ( p < 0.05)。在用户体验方面，Boaray 5000D 在易于维护、维护友好和使用意愿方面在呼吸机中获得了更好的分数（分别为p < 0.05）。我们的研究增加了呼吸机维护用户界面可用性评估的可用文献。结果表明，Boaray 5000D 的维护用户界面比其他两台测试的呼吸机表现更好。此外，研究结果还证明，注视时长可以成为评估呼吸机用户界面可用性的可靠工具。