Chest
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Multiple studies have identified COPD subtypes by using visual or quantitative evaluation of CT images. However, there has been no systematic assessment of a combined visual and quantitative CT imaging classification. We integrated visually defined patterns of emphysema with quantitative imaging features and spirometry data to produce a set of 10 nonoverlapping CT imaging subtypes, and we assessed differences between subtypes in demographic features, physiological characteristics, longitudinal disease progression, and mortality. ⋯ The combination of visual and quantitative CT imaging features reflects different underlying pathological processes in the heterogeneous COPD syndrome and provides a useful approach to reclassify types of COPD.
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Massive hemoptysis is a medical emergency with high mortality presenting several difficult diagnostic and therapeutic challenges. The origin of bleeding and underlying etiology often is not immediately apparent, and techniques for management of this dangerous condition necessitate an expedient response. Unlike hemorrhage in other circumstances, a small amount of blood can rapidly flood the airways, thereby impairing oxygenation and ventilation, leading to asphyxia and consequent cardiovascular collapse. ⋯ Bronchial artery embolization, rigid and flexible bronchoscopy, and surgery all serve as potential treatment options to provide definitive control of hemorrhage. Several adjunctive therapies described in recent years may also assist in the control of bleeding; however, their role is less defined in life-threatening hemoptysis and warrants additional studies. In this concise review, we emphasize the steps necessary for a systematic approach in the management of life-threatening hemoptysis.
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At the recent 6th World Symposium on Pulmonary Hypertension (PH), the definition of PH was redefined to include lower pulmonary artery pressures in the setting of elevated pulmonary vascular resistance (PVR). However, the relevance of this change to subjects with PH due to left-heart disease as well as the preoperative assessment of heart transplant (HT) recipients is unknown. ⋯ Elevated PVR remains associated with a significant increase in the hazard for 30-day mortality after cardiac transplantation, even in the setting of lower pulmonary artery pressures. These data support the validity of the new definition of pulmonary hypertension.