I have a portable oxygen concentrator that lasts up to 3hrs. and a portable tank that lasts for 6hrs. I have albuterol inhalers that help so as far as being ready I am as ready as I can be. I can still be able to function a little on my own without any extra oxygen as long as I do not have to do much. I do exercises with my breathing apparatus to help expand my lung capacity. My capacity is not as good as it used to be but I feel it still helps to do the exercises.
My brother recently had a lung collapse because of his COPD. I did not realize this could happen but the Dr. told him with patients with COPD sometimes they form bubbles in their lungs that causes the lung to collapse. I f you already have difficulty breathing how would you know your lung was collapsed?