I had shortness of breath before my two VATs and it is now increased.
I have mulltiple reasons to have shortness of breath. Apart from loss of lung capacity due to cancer treatments, I also have pulmonary fibrosis and pulmonary hypertension ...my O2 is fine sitting but drops to dangerous levels with exertion. So I now have prescription for O2
I agree with Denzie comment about having your heart checked as a potential cause of shortness of breath. I had a right heart catherization (the gold standard for determining pulmonary hypertension) but unfortunately they could not complete it so they did a TTE (a noninvasive or minimally invasive ultrasound imaging test that uses sound waves to create pictures of the heart).