The Infusion Pump Crisis: A Study in Fatal Affordance

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Human error is rarely a spontaneous event; it is almost always the inevitable endpoint of a system designed without the human in mind. In the high-stakes environment of an intensive care unit, where cognitive load is immense and alarms are ubiquitous, the design of a device interface isn't just a matter of convenience—it is a matter of life or death.

The Interface Flaw

Consider the interface. The contrast ratio of the screen, the haptic feedback of the buttons, the grouping of critical controls—all these variables dictate whether a tired nurse will confidently enter 1.5 mg or mistakenly enter 15 mg into the system.