In the lungs of patients with severe emphysema (COPD), relatively large spaces previously containing lung tissue (obliterated by smoking) become filled with stagnant air that doesn't circulate with breathing.
Endobronchial valves now FDA approved for…
In the lungs of patients with severe emphysema (COPD), relatively large spaces previously containing lung tissue (obliterated by smoking) become filled with stagnant air that doesn't circulate with breathing.