I am a71 year old female(normally going on 35). Height 5ft, weight 11st. In 1975 my heart and lungs were damaged by an IRA bomb. Had a double angioplasty in 2001. I used to have chronic chest infections, but now, just have more and more difficulty breathing. My chest specialist says oxygen won't help, yet when the paramedics came on Friday and gave me oxygen, I felt cooler and could breathe more easily and speak. Prior to that I had blacked out and then, when regained consciousness, vomited just the clear water I had sipped through the night and the gunge from my lungs. Can you explain why oxygen will not help? The specialist says he doesn't understand why I have worsened. I think it is due to higher temperatures and constant rain, i.e. humidity? He has given me more steroids to take. But over 35 years of steroids, my skin, hair, teeth and bones have all suffered and 2 years ago they began attacking my brain cells. I was fit and healthy pror to the bomb and never smoked