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Müller M, Jürgens J, Redaèlli M, et al. BMJ Open. 2018;8:e022202.
Standardized handoff tools are increasingly implemented to improve communication between health care providers. Although this systematic review identified several studies supporting the use of SBAR as a communication tool to improve patient safety, the authors suggest the evidence is moderate and that further research is needed.
Griffiths P, Recio-Saucedo A, Dall'Ora C, et al. J Adv Nurs. 2018;74:1474-1487.
Inadequate hospital nurse staffing is linked to increased mortality. This systematic review found that lower nurse staffing is associated with more reports of missed nursing care. Two of the authors summarized the science of missed nursing care in a recent PSNet perspective.
Parshuram CS, Dryden-Palmer K, Farrell C, et al. JAMA. 2018;319:1002-1012.
Identifying incipient clinical deterioration is a prerequisite for rapid response and prevention of harm for hospitalized patients. This study tested a bedside pediatric early warning system, which included an illness severity score, standardized documentation, and monitoring protocols. In a cluster-randomized trial in several high-income countries, implementation of the bundle did not result in decreased in-hospital mortality compared to usual care. The overall mortality rate in the study was less than 0.2%. The authors suggest that this unexpectedly low mortality rate may have made it difficult to detect differences in intervention versus control hospitals. A related editorial suggests that artificial intelligence should be used to identify clinical deterioration and that outcomes beyond mortality should be considered in their evaluation.
Ball JE, Bruyneel L, Aiken LH, et al. Int J Nurs Stud. 2018;78:10-15.
Missed nursing care may result from inadequate nurse staffing and explain the relationship between nurse-to-patient ratios and patient outcomes. Research has shown that higher nurse staffing levels are associated with lower inpatient mortality and that reduced staffing increases the risk for postoperative complications. In this study, investigators examined data from more than 400,000 surgical patients from 300 hospitals in 9 countries as well as survey responses from 26,516 nurses. They found a significant association between nurse staffing and missed nursing care with 30-day risk-adjusted postoperative mortality. The authors conclude that measuring missed nursing care may help identify patients at greater risk for adverse outcomes earlier in their course. A past WebM&M commentary highlighted important issues associated with nurse staffing ratios.
Walker S, Mason A, Quan P, et al. Lancet. 2017;390:62-72.
The weekend effect (higher mortality for patients in acute care settings on weekends compared to weekdays) has led to widespread concerns about hospital staffing. This retrospective study examined whether mortality for emergency admissions at four hospitals in the United Kingdom differed on weekends compared to weekdays. Unlike prior studies of the weekend effect, this study included multiple specific markers of patients' illness severity as well as hospital workload. Investigators found higher mortality associated with being admitted to the hospital during weekends compared to weekdays, but a significant proportion of the observed weekend effect was explained by severity of patient illness. They used three measures to approximate hospital workload: total number of admissions, net admissions (subtracting discharges from admissions), and percentage of beds occupied. None of these workload measures was associated with mortality. The authors conclude that differences in illness severity rather than health care team staffing explain the weekend effect. A recent PSNet interview discussed the weekend effect in health care.
Li L, Rothwell PM, Study OV. BMJ. 2016;353:i2648.
The weekend effect refers to the fact that mortality for several common conditions is higher in patients admitted on weekends compared to weekdays. While the mechanism for this effect is unclear, it likely varies for different disease processes. For example, prior studies have postulated that a weekend effect exists for patients with acute stroke. However, this study analyzed a large British database and found that many patients with a history of stroke who were later hospitalized for other reasons had their admission diagnosis inaccurately documented as acute stroke. This inaccuracy occurred more frequently in patients admitted on weekdays. Because the weekday admissions included many patients who were hospitalized for less morbid conditions, mortality appeared lower for patients admitted on weekdays than on weekends. When data was reanalyzed to include only those patients with a true acute stroke, no weekend effect was found. This study demonstrates the limitations of administrative data in analyzing patient safety issues.
Catchpole K, Sellers R, Goldman A, et al. Qual Saf Health Care. 2010;19:318-22.
Transfer of patients from the operating room to intensive care involves exchange of complex information between multiple providers in a short period of time.  In an innovative effort to apply principles from other industries to medicine, this study used interviews with the managers of Formula One auto racing teams to determine the key elements of racing "pit stops" and draw lessons for improving the safety of the postoperative handover process. The key lessons learned from the auto racing approach—proactive planning, active management of the handover process using information technology, and post hoc learning by data monitoring and analysis—have subsequently been applied to standardize and improve the postoperative handover process.