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low FEV1, FVC?
my FEV1 and FVC are usually in the low 70s even on symbicort/dulera/combivent.  does that mean that my asthma isn't controlled and I need different meds?  is my body getting enough oxygen?  
my FEV1/FVC ratio is usually above 100.  how do you know if you are having airway remodeling and permanent scarring that would lead to permanent loss of lung function.  I'm worried because I've been wheezing for 12 weeks and prednisone at 50mg doesn't stop the wheezing.
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