ABSTRACT
This chapter presents user interface (UI) concepts and usability principles and then illustrates the UI needs of an electronic health record (EHR) with emphasis on the medications domain.
The main goal is for the UI is to tell a clinical story at various levels of details; for ambulatory settings, the time frame is measured in years, while in an intensive care unit (ICU) environment, it is literally a matter of minutes. The UI also needs to satisfy different clinicians: physician, pharmacist, nurse. All have similar but not exactly the same requirements in terms of what should be displayed.
