I took my pro air hfa inhaler before my pulmonary function testing. would this affect my results if i have copd , lung damage, or other diseases ?

Usually does: These inhalers will usually improve lung function. They can be given during lung function testing to verify their effectiveness. If you did not inform the doc of your inhaler use, they may not have been able to help your treatment plan as much as they could.

Yes: Albuterol is used to reverse bronchoconstriction and the PFTs will reflect that if they test before and after the albuterol.

It would...: improve reversible airway obstruction, as in asthma. Chronic obstructive lung disease, e.g. emphysema, chronic bronchotis, fibrosis, othet, has much more of a permament, irreversible, and less reversible, component to the obstruction. Drugs like proair have less of an effect. Lack of a response is one factor in making the diagnosis.