If you were smoker some years before the accident you may have had Emphysema or Chronic Bronchitis before the accident and that can cause SOB. I suggest to you to see a Thoracic surgeon to find out if the frequent intubation may have caused your SOB and if there is anything can be done about it. Some patients with Emphysema and Chronic bronchitis are candidate for lung reduction surgery and some people with lung failure are candidate for lung transplant .
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