Medscape highlighted research presented by Ahmad Raza, MBBS, a Pulmonary and Critical Care Fellow at the Temple Lung Center, at the European Respiratory Society (ERS) Congress in Amsterdam, which showed that the degree of heterogeneity of emphysema is less important than the presence of air trapping in predicting outcomes of bronchoscopic lung volume reduction (BLVR) in patients with advanced emphysema and hyperinflation.