Key Takeaways
- Eye‑tracking technology (Tobii Pro Glasses 2) was used for the first time to evaluate IV smart pump usability, revealing where users look, hesitate, or make errors during programming.
- The study compared four pumps—including a newer touchscreen model—and found the touchscreen system required less time and was perceived as easier to use than older devices.
- Researchers from nursing, engineering, and human factors collaborated, demonstrating how methods from driving‑safety research can be transferred to healthcare device evaluation.
- A follow‑up national study with experienced critical‑care nurses is underway to confirm whether novice‑student findings translate to real‑world clinical practice.
- Insights from this work aim to inform manufacturers, hospitals, and regulators on design improvements that can reduce intravenous medication administration errors, which remain the most harmful route of drug delivery.
Introduction
Researchers at the University of Massachusetts Amherst have pioneered the use of eye‑tracking technology to study how nurses interact with intravenous (IV) smart pumps. Published in the June 2026 issue of Advancing Medical‑Surgical Nursing, the study represents the first known application of eye‑tracking to evaluate these high‑risk infusion devices. By mapping exactly where users look while programming the pumps, the team can pinpoint moments of confusion, hesitation, and error that traditional usability testing often misses.
Eye‑Tracking Technology and Its Advantages
The investigators equipped 31 undergraduate nursing students with Tobii Pro Glasses 2, wearable eye‑trackers that record gaze direction, fixation duration, and saccadic movements in real time. As Professor Karen Giuliano (Nursing) and Professor Frank Sup (Engineering) explain, the technology “shows you exactly where the participants are looking and for how long.” This granular visual data enables researchers to correlate visual attention with specific pump interactions—such as button presses, menu navigation, or alarm acknowledgments—offering a window into cognitive load and usability challenges that self‑report or observation alone cannot reveal.
Background of the IV Smart Pump Research Program
The eye‑tracking study is a component of a broader research agenda launched by Giuliano in 2012 to examine the safety, usability, and clinical performance of IV smart pumps. Over the past decade, Giuliano’s team has produced more than 30 peer‑reviewed publications covering topics such as programming errors, medication administration practices, alarm fatigue, and environmental distractions. IV medication administration errors are particularly consequential; they are linked to more serious patient outcomes than errors associated with any other drug‑delivery route. Given that U.S. hospitals administer an estimated 1.7 billion IV infusions annually—many of them life‑critical—understanding and improving pump design is a pressing patient‑safety priority.
Methodology: Comparing Four IV Smart Pumps
Led by EMCNEI doctoral student Seonhun Lee, the study had participants program four different IV smart pumps while wearing the eye‑trackers. Researchers synchronized the gaze data with timestamped logs of pump interactions, allowing them to identify where participants focused their attention, where they hesitated, and where errors occurred. The tasks involved setting up a standard IV medication infusion (e.g., programming dose, rate, and volume) on each device. By capturing both objective performance metrics (programming time, error counts) and subjective workload assessments, the study provided a multidimensional view of usability.
Findings: Touchscreen Advantage Over Legacy Models
As Lee summarized, the comparative analysis revealed significant differences among the pumps in both programming time for identical tasks and overall ease of use. The newest touchscreen‑based system consistently outperformed the older models that remain prevalent in clinical settings. Users completed programming faster, exhibited fewer fixations on irrelevant screen areas, and made fewer programming errors with the touchscreen interface. These results suggest that modern, intuitive touchscreen designs reduce cognitive load and support more efficient, accurate pump operation—a clear indication that interface design critically influences user performance.
Interdisciplinary Collaboration: From Driving to Healthcare
The eye‑tracking approach emerged from a unique collaboration with Shannon Roberts, associate professor of mechanical and industrial engineering at UMass Amherst, whose work applies similar technology to study driver interaction with vehicle dashboards and safety systems. Roberts noted, “This study provides a great example of how eye‑tracking technology can jump from the driving domain straight into a healthcare setting. It’s a powerful reminder that our best tools, techniques and metrics rarely stay confined to a single discipline.” By borrowing methodologies from transportation safety research, the team was able to adapt proven usability‑assessment techniques to the complex, high‑stakes environment of medication infusion.
Ongoing National Follow‑Up Study
Building on the novice‑nurse findings, the research team has already completed a national follow‑up study that employed eye‑tracking during IV smart pump programming with experienced critical‑care nurses from hospitals across the United States. This larger‑scale effort seeks to determine whether the usability patterns observed in student participants hold true among seasoned clinicians who routinely manage complex infusion regimens. Together, the novice and expert studies aim to generate robust evidence on how device design shapes clinical performance and patient safety across diverse user populations.
Implications for Manufacturers, Providers, and Regulators
The ultimate goal of this line of research is to reduce IV medication administration errors by informing better pump design. Manufacturers can use eye‑tracking data to identify specific interface elements that cause visual search difficulties or cognitive overload, guiding iterative redesigns. Healthcare providers can leverage the evidence to select pumps that align with their workflow and minimize error‑prone steps. Regulators may consider incorporating eye‑tracking‑based usability assessments into pre‑market approval or post‑market surveillance processes, ensuring that safety‑critical devices meet rigorous human‑factor standards before widespread deployment.
Conclusion
The UMass Amherst study marks a milestone in applying eye‑tracking technology to evaluate IV smart pump usability, offering a nuanced, data‑driven perspective on how nurses interact with these essential devices. By demonstrating that newer touchscreen interfaces improve programming speed and reduce errors, the research underscores the importance of human‑centered design in medical technology. Continued interdisciplinary collaboration and expanded testing with experienced clinicians will be vital to translating these insights into safer infusion practices and, ultimately, better patient outcomes.