The Accreditation Council for Graduate Medical Education (ACGME) in the United States limits resident physicians' workweek to 80 hours. Several studies have investigated the association between first year residents (i.e., interns, PGY1), worked hours and patient safety. This study includes residents beyond the first year (i.e., PGY2+). Nearly 5,000 PGY2+ residents reported the number of hours worked, patient safety outcomes, and resident health and outcomes. Working more than 60 hours in a week significantly increased the risk of a medical error resulting in patient death. The authors suggest weekly workweek limits should be significantly reduced, such as they are in the United Kingdom.

Fatigue and sleep deprivation among healthcare workers can increase the risk of errors. This prospective study including 60 attending surgeons from departments of surgery or obstetrics and gynecology at eight hospitals found that sleep deficiency was not associated with greater numbers of errors during procedures performed the next day. However, non-technical skill performance, situational awareness, and decision making were adversely associated with sleep deficiency.  

A 2022 study found that non-first off-pump coronary artery bypass graft (CABG) had a higher risk of complications than first cases, proposing prior workload as a contributing cause. This commentary responds to that study, proposing system and organizational factors, not just the individual surgeon, be taken into consideration as contributing causes.

Fostering a culture of safety is an essential component of improving patient safety and health care quality. This systematic review of seven articles identified a negative relationship between job-related stress among nurses and patient safety culture. Studies also reported that factors such as fatigue, workload, burnout, and workplace violence contribute to job-related stress and resulted in decreased patient safety culture.

Fatigue is a known contributor to adverse events and near misses. Researchers summarized 38 studies on the impact of fatigue on nurses’ medication administration errors (MAE) or near misses. Thirty-one studies reported that long hours, shift work, overtime, and/or poor sleep quality contributed to MAE and near miss, but results and methods of measuring fatigue were inconsistent.

Patient safety improvements must consider the complexities of care delivery to achieve lasting change. This commentary discusses recent evidence examining the effect of duty hour limit adjustments. The authors highlight challenges regarding research design on this medical education policy change and how it affects learner and patient experience. They suggest caution in applying the study conclusions. 

Several countries have resident duty hour (RDH) restrictions and there are numerous publications examining the impact of RDH on patient safety. This study used two online discussion forums (one primarily in the United States and the other in Canada) to assess resident perceptions of RDH. Themes included its impact on residents’ education and clinician well-being, and, worryingly, discussions of not reporting RDH violations.

Challenging working conditions and increased cognitive workload can result in stress and burnout. This article describes a conceptual framework in which working conditions and cognitive workload impact stress and burnout, which, in turn, impacts diagnostic accuracy. Potential uses and testing of the framework are described.

Increases in clinician workload can contribute to burnout. This study explored seasonal variation in workload in an orthopedic trauma service at one Level 1 trauma center. Findings indicate that workload was highest in the summer months and correlated with resident sleepiness scores. The study team also found that patient safety events were highest during the summer, but these were not correlated with increased workload.

To reduce medical errors caused by fatigue, the Accreditation Council for Graduate Medical Education (ACGME) adopted duty hour restrictions for ACGME-accredited residency programs; however, other healthcare fields have not yet done so. This review presents the limited existing evidence for regulating duty hours for radiologists and proposes that additional research needs to be completed before implementing restrictions.

Many aspects of crew resource management in aviation, such as the sterile cockpit, are used in healthcare to increase situational awareness (SA) and decrease human error. The situational awareness of paramedics in one US city was measured before and after receiving a targeted educational program on situational awareness. There was a statistically significant increase in SA following the intervention, although additional research is needed with larger cohorts.

Physician fatigue can inhibit decision-making and contribute to poor performance. This cross-sectional study examined surgical procedures performed between January 2010 and August 2020 across 20 high-volume hospitals in the United States to determine the association between surgeon fatigue, operating overnight and outcomes for operations performed by the same surgeon the next day. No significant associations were found between overnight surgeries and surgical outcomes for procedures performed the next day.

In 2011, the Accreditation Council for Graduate Medical Education (ACGME) introduced a 16-hour shift limit for first-year residents. Recent studies found that these duty hour requirements did not yield significant differences in patient outcomes and the ACGME eliminated the shift limit for first-year residents in 2017. To assess the impact of work-hour limits on medical errors, this study prospectively followed two cohorts of resident physicians matched into US residency programs before (2002-2007) and after (2014-2016) the introduction of the work-hour limits. After adjustment for potential confounders, the work-hour limit was associated with decreased risk of resident-reported significant medical errors (32% risk reduction), reported preventable adverse events (34% risk reduction), and reported medical errors resulting in patient death (63% risk reduction).

Many hospitals have adopted a 12-hour work shift for nurses and some studies have shown a resulting increase in burnout and decrease in patient safety. In this study, researchers assessed simulated nursing performance, cognition, and sleepiness in day nurses and night nurses who worked three consecutive 12-hour shifts. Overall results indicated nurses on both shifts mostly maintain their abilities on the simulated nursing performance assessment despite reporting increased sleepiness and fatigue. However there was more individual variation in cognition and some domains of performance.

In 2011, the Accreditation Council for Graduate Medical Education (ACGME) updated the duty hour restrictions (DHR) for medical residents to increase resident well-being. This review focused on surgical patient outcomes, resident case volume, and resident quality of life following the implementation of the 2011 update. Results showed DHR did not improve patient safety or surgical resident quality of life. The authors suggest future revisions meant to improve resident well-being not focus solely on hours worked in a single shift or week.

Burnout has been a focus of numerous studies since the beginning of the COVID-19 pandemic; however, this is the first to focus on burnout and secondary traumatic stress (STS) among health system pharmacists. Nearly two thirds (65.3%) of respondents had a moderate to high likelihood of experiencing burnout and 51% had a high probability of STS. Due to the association between burnout and decreased patient safety, it is critical that health systems address pharmacist burnout appropriately.

Healthcare workers are facing occupational fatigue stemming from the COVID-19 pandemic (e.g., burnout, stress) as well as fatigue related to ongoing symptoms of the virus (“long COVID”). This article discusses preventive and proactive leadership strategies to address both types of fatigue, including screening for fatigue, providing reasonable accommodations for healthcare workers struggling with fatigue, stress mediation, and establishing organizational culture supporting sleep and rest.

The relationship between resident and physician duty hours and patient safety has been the focus of a lot of research. The relationship between nurse work schedules and patient safety is less explored. This review investigated the effect of extended or excessive nurse schedules on patient outcomes. Findings conclude that working more than 12 hours daily or more than 40 hours weekly may contribute to adverse patient outcomes. The authors recommend creating policies restricting nurse shifts to no more than 12 hours per day and 40 hours per week.