Changing estimates of leadership ability before a programme: retrospective self-assessments and response-shift bias.

Background: Most evaluations of clinical leadership development programmes rely on self-assessments. Self-assessments are vulnerable to response-shift bias. Using retrospective then-tests may help to avoid this bias.

X-ray quasi-periodic eruptions from two previously quiescent galaxies.

Quasi-periodic eruptions (QPEs) are very-high-amplitude bursts of X-ray radiation recurring every few hours and originating near the central supermassive black holes of galactic nuclei. It is currently unknown what triggers these events, how long they last and how they are connected to the physical properties of the inner accretion flows. Previously, only two such sources were known, found either serendipitously or in archival data, with emission lines in their optical spectra classifying their nuclei as hosting an actively accreting supermassive black hole.

Postoperative Telehealth Visits Reduce Emergency Department Visits and 30-Day Readmissions in Elective Thoracic Surgery Patients.

Background: Preventing postoperative 30-day readmissions requires an investment in patient care. The use of postdischarge telehealth visits to prevent potential adverse events or hospital visits has been shown in previous studies.

Purpose: We aim to determine the impact of postoperative telehealth visits (PTV) on reducing emergency department visits (EDV) and readmissions within 30 days postdischarge (30DR).

Debility Risk Model as a Predictor for Postsurgical Outcomes.

Background: Decreased patient functional status is associated with higher rates of postoperative morbidity and mortality. The Vizient program recently implemented a debility risk model to identify patients with impaired functional status. We examined the relationship between this novel model and inpatient postsurgical outcomes in a large urban tertiary care center.

Detection of large-scale X-ray bubbles in the Milky Way halo.

The halo of the Milky Way provides a laboratory to study the properties of the shocked hot gas that is predicted by models of galaxy formation. There is observational evidence of energy injection into the halo from past activity in the nucleus of the Milky Way; however, the origin of this energy (star formation or supermassive-black-hole activity) is uncertain, and the causal connection between nuclear structures and large-scale features has not been established unequivocally. Here we report soft-X-ray-emitting bubbles that extend approximately 14 kiloparsecs above and below the Galactic centre and include a structure in the southern sky analogous to the North Polar Spur.