Chest
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Our objective was to assess the usefulness of emphysema scores in predicting death from COPD and lung cancer. ⋯ Visual assessment of emphysema on CT scan is a significant predictor of death from COPD and lung cancer.
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We report a patient who developed shortness of breath and systemic symptoms after starting to smoke fentanyl patches. CT scan showed ground glass centrilobular nodules, and biopsy demonstrated alveolar proteinosis. Her symptoms disappeared and her chest imaging changes largely resolved when she stopped smoking the patches. Alveolar proteinosis is an uncommon drug reaction and in this case presented in a very unusual fashion as an inhalation injury.
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There is an inherent tension between the training needs of inexperienced clinicians and the safety of the patients for whom they are responsible. Our society has accepted this tension as a necessary trade-off to maintain a competent workforce of physicians year after year. However, recent trends in medical education have diminished resident autonomy in favor of the safety of current patients. ⋯ Thus, many hospitals have moved toward 24-h coverage by attending intensivist physicians without evidence that these benefits actually accrue and perhaps without full consideration of possible unintended consequences. In this article, we discuss the potential benefits and risks of nocturnal intensivist staffing, considering the needs of current and future patients. Furthermore, we suggest that there remains sufficient uncertainty about these benefits and risks that it is both necessary and ethical to study the effects in earnest.
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Comparisons of lung manifestations in primary pulmonary vs disseminated nontuberculous mycobacterial disease have not been well described. The clinical, histopathologic, and radiologic disease manifestations of primary pulmonary or disseminated nontuberculous mycobacterial disease were compared in an autopsy series. ⋯ Nontuberculous mycobacteria can cause progressive, fatal disease. Primary pulmonary disease is bronchocentric and lacks extrathoracic infection consistent with impaired airway surface defenses. In contrast, fatal disseminated infections involving the lung have hematogenous spread, extensive extrathoracic disease, and a distinct pulmonary histopathology consistent with systemic immune dysfunction.
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Hypoxia inducible factor (HIF)-1 plays an important role in cellular adaptation to hypoxia by activating oxygen-regulated genes such as vascular endothelial growth factor (VEGF) and erythropoietin. Sputum VEGF levels are reported to be decreased in COPD, despite hypoxia. Here we show that patients with COPD fail to induce HIF-1α and VEGF under hypoxic condition because of a reduction in histone deacetylase (HDAC) 7. ⋯ HDAC7 reduction in COPD causes a defect of HIF-1α induction response to hypoxia with impaired VEGF gene expression. This poor cellular adaptation might play a role in the pathogenesis of COPD.