Combinations of substances contributing to death among overdose decedents in Maryland (2020-2021).

Background: In 2020, Maryland had the fourth-highest opioid overdose mortality rate in the USA. We describe substances identified in postmortem toxicology screening and designated as cause of death (COD) for overdose decedents in Maryland, including specific combinations of substances designated as COD.

Methods: We performed a retrospective analysis of N=5442 adult overdose decedents (ie, manner of death unintentional or undetermined) in Maryland between January 2020 and December 2021.

Validation of polymorphic Gompertzian model of cancer through in vitro and in vivo data.

Mathematical modeling plays an important role in our understanding and targeting therapy resistance mechanisms in cancer. The polymorphic Gompertzian model, analyzed theoretically and numerically by Viossat and Noble to demonstrate the benefits of adaptive therapy in metastatic cancer, describes a heterogeneous cancer population consisting of therapy-sensitive and therapy-resistant cells. In this study, we demonstrate that the polymorphic Gompertzian model successfully captures trends in both in vitro and in vivo data on non-small cell lung cancer (NSCLC) dynamics under treatment.

Implementation of EMS Clinician Feedback Tool Encourages Patient Feedback Requests and Professional Development: A Mixed-Methods Study.

Objectives: Emergency medical services (EMS) clinicians express dissatisfaction with the quality and quantity of clinical feedback received from hospitals, which is exacerbated by the absence of standardized feedback processes. A reported lack of regular feedback impedes their ability to learn and improve care. We evaluated a newly implemented feedback tool's utilization and perceived impact on EMS clinicians and our health system.

Mechanisms of exercise-related neurocardiogenic syncope and the relationship between resting and dynamic cardiac testing.

Objective: Syncope is common among pediatric patients and is rarely pathologic. The mechanisms for symptoms during exercise are less well understood than the resting mechanisms. Additionally, inert gas rebreathing analysis, a non-invasive examination of haemodynamics including cardiac output, has not previously been studied in youth with neurocardiogenic syncope.

Evaluating a 12-week aerobic exercise intervention in adults with persisting post-concussive symptoms.

Background: Although guidelines support aerobic exercise in sub-acute mild traumatic brain injury (mTBI), evidence for adults with persisting post-concussive symptoms (PPCS) after mTBI is lacking. The objective was to evaluate the impact of a sub-symptom threshold aerobic exercise intervention on overall symptom burden and quality of life in adults with PPCS.

Methods: This prospective cohort study was nested within the ACTBI Trial (Aerobic Exercise for treatment of Chronic symptoms following mild Traumatic Brain Injury).