Usability Model for Medical User Interface of Ventilator System in Intensive Care Unit

Abstract : A usability model is a hierarchical structure encompassing the key elements such as users, user interface and interaction between them. It is a generic template which is independent of usability evaluation methods and provides flexibility for adaptation in different contexts and domains. In this paper, a usability model for medical user interfaces, especially for ventilator systems in Intensive Care Unit (ICU), is proposed based on Norman’s action-oriented seven-step model to capture a related medical context. A ventilator system is a therapeutic device, which provides a respiratory support to critically-ill patients. Currently, a usability of user interfaces of ventilator systems is evaluated by typical usability evaluation methods from software industry. These evaluation methods miss out important elements in medical context. Therefore, a need for a specialized usability model for medical user interfaces is fulfilled with a proposed usability model encompassing vital elements such as medical user, user interface, ICU environment and time required. This usability model is validated first, through a human work analysis using videos of selected tasks with medical user interfaces and then, with an overview of critical factors affecting medical user interfaces in ICU. In future, a proposed usability model can be integrated with a suitable usability evaluation method for evaluating medical user interfaces to identify related medical usability problems more effectively.
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Ganesh Bhutkar, Dinesh Katre, G. Ray, Shahaji Deshmukh. Usability Model for Medical User Interface of Ventilator System in Intensive Care Unit. 3rd Human Work Interaction Design (HWID), Dec 2012, Copenhagen, Denmark. pp.46-64, ⟨10.1007/978-3-642-41145-8_5⟩. ⟨hal-01463377⟩

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