Chest
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Although long neglected, the right side of the heart (RH) is now widely accepted as a pivotal player in heart failure (HF) either with reduced or preserved ejection fraction. The chronic overload of the pulmonary microcirculation results in an initial phase characterized by right ventricular (RV) hypertrophy, right atrial dilation, and diastolic dysfunction. This progresses to overt RH failure when RV dilation and systolic dysfunction lead to RV-pulmonary arterial (RV-PA) uncoupling with low RV output. ⋯ Assessments simultaneously should encompass RV systolic function, pulmonary pressures, an estimation of RV-PA coupling, and RH morphologic features. Despite a large volume of evidence indicating the relevance of RH function to the clinical syndrome of HF, evidence-based management strategies are lacking. Targeting RH dysfunction in HF should be an objective of future investigations, being an unmet need in the current management of HF.
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Comment Review
The Last Beat: Contemporary Ethical Controversies Surrounding Determination of Cardiopulmonary Death.
Part one of this series tracked the evolution of the death examination, noting its stability over the last century despite changing diagnostic and therapeutic technologies and social contexts. In part two, we discuss the practical and ethical debates surrounding the exact timing of death. ⋯ The phenomenon of autoresuscitation highlights these issues because patients who meet all the criteria for circulatory death (sometimes for periods of observation well beyond the norm) apparently return to life. Were these patients resurrected (like Lazarus) or did we simply not wait long enough?
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Observational Study
Alternative gene expression by TOLLIP variant is associated with lung function in chronic hypersensitivity pneumonitis.
Chronic hypersensitivity pneumonitis (CHP) is a heterogeneous fibrotic interstitial pneumonia resulting from the immune response of susceptible individuals to inhaled antigens. Genetic predispositions have been suggested in CHP; however, the link between susceptibility genes and fibrotic progression has not been elucidated fully. Recent data suggest that variants in Toll-interacting protein gene (TOLLIP) are associated with lung diseases. ⋯ The functional changes by TOLLIP variant were associated with rapid FVC decline through dysregulated Smad/transforming growth factor β and NF-κB signaling in CHP.
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Observational Study
The probability of lung cancer in patients with incidentally detected pulmonary nodules: clinical characteristics and accuracy of prediction models.
The frequency of cancer and accuracy of prediction models have not been studied in large, population-based samples of patients with incidental pulmonary nodules measuring > 8 mm in diameter. ⋯ Almost 10% of patients with an incidental pulmonary nodule measuring > 8 mm in diameter will receive a lung cancer diagnosis. Existing prediction models have only fair accuracy and overestimate the probability of cancer.
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Comparative Study
Rationing With Respect to Age During a Pandemic: A Comparative Analysis of State Pandemic Preparedness Plans.
Faced with possible shortages due to COVID-19, many states updated or rapidly developed crisis standards of care (CSCs) and other pandemic preparedness plans (PPPs) for rationing resources, particularly ventilators. ⋯ Guidance with respect to rationing by age and/or life-years varied widely. More than one-half of PPPs, many following a few common models, included age/life-years as an explicit rationing criterion; the majority of these made it a primary consideration. Terminology was often vague, and many plans evolved in response to pushback. These findings have ethical implications for the care of older adults and other vulnerable populations during a pandemic.