Recently, validated clinical decision rules have been developed that avoid unnecessary use of computed tomographic pulmonary angiography (CTPA) in patients with suspected pulmonary embolism (PE) in the emergency department (ED).

The first 3 years of the COVID-19 pandemic witnessed an unprecedented pace of research that dramatically lessened morbidity and mortality due to COVID-19. This commentary discusses research findings that led to clinical practice recommendations that were later associated with excess mortality.

Measurement of the burden of COVID-19 on U.S. hospitals has been an important element of the public health response to the pandemic. However, because of variation in testing density and policies, the metric is not standardized across facilities. Two types of burdens exist, one related to the infection control measures that patients who test positive for SARS-CoV-2 require and one from the care of severely ill patients receiving treatment of COVID-19. With rising population immunity from vaccination and infection, as well as the availability of therapeutics, severity of illness has declined. Prior research showed that dexamethasone administration was highly correlated with other disease severity metrics and sensitive to the changing epidemiology associated with the emergence of immune-evasive variants. On 10 January 2022, the Massachusetts Department of Public Health began requiring hospitals to expand surveillance to include reports of both the total number of "COVID-19 hospitalizations" daily and the number of inpatients who received dexamethasone at any point during their hospital stay. All 68 acute care hospitals in Massachusetts submitted COVID-19 hospitalization and dexamethasone data daily to the Massachusetts Department of Public Health over a 1-year period. A total of 44 196 COVID-19 hospitalizations were recorded during 10 January 2022 to 9 January 2023, of which 34% were associated with dexamethasone administration. The proportion of patients hospitalized with COVID-19 who had received dexamethasone was 49.6% during the first month of surveillance and decreased to a monthly average of approximately 33% by April 2022, where it has remained since (range, 28.7% to 33%). Adding a single data element to mandated reporting to estimate the frequency of severe COVID-19 in hospitalized patients was feasible and provided actionable information for health authorities and policy makers. Updates to surveillance methods are necessary to match data collection with public health response needs.

Optimal use of masks for preventing COVID-19 is unclear.

The role of camp physicians of the Waffen-SS ("Armed SS," military branch of the Nazi Party's Schutzstaffel) in the implementation of the Holocaust has been the subject of limited research, even though they occupied a key position in the extermination process. From 1943 and 1944 onward, SS camp physicians made the individual medical decisions on whether each prisoner was fit for work or was immediately subjected to extermination, not only at the Auschwitz labor and extermination camp but also in pure labor camps like Buchenwald and Dachau. This was due to a functional change in the concentration camp system during World War II, where the selection of prisoners, which had previously been carried out by nonmedical SS camp staff, became a main task of the medical camp staff. The initiative to transfer sole responsibility for the selections came from the physicians themselves and was influenced by structural racism, sociobiologically oriented medical expertise, and pure economic rationality. It can be seen as a further radicalization of the decision making practiced until then in the murder of the sick. However, there was a far-reaching scope of action within the hierarchical structures of the Waffen-SS medical service on both the macro and micro levels. But what can this teach us for medical practice today? The historical experience of the Holocaust and Nazi medicine can provide a moral compass for physicians to be sensitive to the potential for abuse of power and ethical dilemmas inherent in medicine. Thus, the lessons from the Holocaust could be a starting point for reflecting on the value of human life in the modern economized and highly hierarchical medical sector.

As the COVID-19 public health emergency is lifted and the pandemic continues to recede, hospitals must decide how to deescalate mitigation strategies to sustainable states. This commentary advocates continuing universal masking in health care settings.

Excessive daytime sleepiness (EDS) is common among patients with obstructive sleep apnea (OSA). The comparative effectiveness of pharmacologic agents is unknown.