Patients admitted to the hospital on the weekend have been shown to experience worse outcomes compared to those admitted on weekdays. This weekend effect has been observed numerous times across multiple health care settings. However, whether patient characteristics (patients admitted on the weekend may be more severely ill) or system factors (less staffing and certain services may not be available on the weekend) are primarily responsible remains debated. In this systematic review and meta-analysis including 68 studies, researchers found a pooled odds ratio for weekend mortality of 1.16. Moreover, the weekend effect in these studies was more pronounced for elective rather than unplanned admissions. They conclude that the evidence suggesting that the weekend effect reflects worse quality of care is of low quality. A past PSNet perspective discussed the significance of the weekend effect with regard to cardiology.

Transitions of care represent a vulnerable time for patients. Older adults in particular may experience a variety of challenges related to such transitions, including managing changes to their medications. This systematic review suggests that there is significant opportunity for health care providers to improve family engagement in managing medications of elderly patients during care transitions.

Early detection of patient deterioration remains an elusive patient safety target. This scoping review examined how nurses employ early warning scoring systems that prompt them to call rapid response teams. Investigators identified 23 studies for inclusion. Barriers to effective identification and treatment of patient deterioration included difficulty implementing early warning score systems, overreliance on numeric risk scores, and inconsistent activation of rapid response teams based on early warning score results. They recommend that nurses follow scoring algorithms that calculate risk for deterioration while supplementing risk scoring with their clinical judgment from the bedside. A WebM&M commentary highlighted how early recognition of patient deterioration requires not only medical expertise but also collaboration and communication among providers.

Care transitions represent a vulnerable time for patients, especially at the time of hospital discharge. In this systematic review, researchers identified several factors related to discharge summaries that may adversely impact the safety of discharged patients, including delays in sending discharge summaries to outpatient providers as well as missing or low-quality information.

Teamwork is an important element of safe care delivery. This review explores the evidence on the role of teams in ambulatory care, innovations in primary care teamwork models, and barriers to success. The authors offer recommendations to encourage team development in primary care, including defining team competencies, providing team training opportunities specific to ambulatory care, and adjusting care payment mechanisms.