In modern health care, we still behave as though safety is primarily a function of individual vigilance. When something goes wrong, health-care providers will instinctively ask “what could I have done differently?” instead of addressing a more uncomfortable question “how did our systems make this mistake more likely?” This is understandable as many enter the health-care profession firmly grounded in the principle of “first, do no harm.”
But the reality is issues involving human factors (the field of study that examines how people interact with their environment, tools and systems) are not occasional disruptions in care delivery. They are ubiquitous and show up as everyday challenges: searching for equipment during emergencies, navigating cluttered workspaces and interpreting ambiguous responsibilities to name a few.
In fact, our human factors research at North York General shows that relying on education alone is not enough to ensure patient safety. To reliably and consistently achieve safe practices, we need well-designed systems and supports.
In a recent study published in Anesthesia & Analgesia, we used simulations to examine how system design can impact clinical teams. This was a departure from the more traditional use of simulations as a training tool. We brought together teams from a range of clinical disciplines to work through simulated responses to emergencies involving Local Anesthetic Systemic Toxicity (LAST), a rare but life-threatening emergency that can happen after a local anesthetic is administered.
What the simulations revealed was telling: a total of 183 latent safety threats that were vastly driven not by gaps in clinical knowledge but by system design failures. Nearly half of the incidents observed occurred during a critical management phase of care, when time-sensitive decisions and actions are required.
Interestingly, the most common problems were not diagnostic errors (the focus of other research exploring LAST) or lack of training. They were poor physical layout and failures in role allocation and communication: issues embedded in the design of the work environment itself. In some cases, clinicians were delayed by something as basic as obstructed access to the crash cart (a portable cabinet that contains necessary equipment and medications to address a critical care situation). In others, ambiguous task delegation delayed life-saving interventions by minutes.
These were not individual failings stemming from the need for more or better training. They were design failures. In fact, clinicians often knew what needed to be done, but the system around them made it difficult to do so quickly and reliably.
Every hospital workflow, from medication administration to operating room crises, is shaped by the interplay of environment, tools, communication and team dynamics. When these systems are poorly designed, even highly skilled clinicians can struggle.
Other industries have taken this lesson to heart. Aviation and defense assume human error is inevitable and design systems to anticipate, absorb and mitigate accordingly. Checklists are standardized, workflows are engineered and environments are optimized for performance under stress. But in health care, there remains much room for improvement.
If we are serious about improving patient safety, we need to design operating rooms and other clinical environments with flow and visibility in mind, standardize communication protocols, clarify roles during crises and ensure that tools and information are accessible when seconds matter.
Health care is facing many challenges. Among the most important is the need for more intentional design that supports skilled professionals. Until we close this gap, we run the risk of experiencing preventable errors, not because clinicians are unprepared, but because the systems they work in are.
