I really need some advice because I am so worried about my father. His breathing on the slightest exertion is very bad. He his fine when rested, but if he walks for 10 seconds he is gasping for breath. He has been told he has mild COPD (Emphysema). No lung cancer is present, heart is fine and pumping blood to and from the heart. Can mild Emphysema really cause such bad breathing? Has anyone had similar issues? Also, has anyone had the Endobronchial Valves fitted? I hope someone can help. Thank you in advance.