MED NEB TREATMENTS

I have Emphysemia & take med neb treatments of xoponex & ventolin @ least every 4 hours. I stay on the med neb machine doing my breathing for 1 to 2 hours even though the med in gone long before that time. I also am on 02 continously.
Is this good for me to make the breathing exercise last that long or could it be bad for me??

[National Jewish]

The nebulizer does not provide any kind of breathing exercise.  The purpose of the nebulizer is to turn a liquid into a mist to be inhaled.  The medicines that you are putting in the nebulizer are short-acting bronchodilators that relax the tightness of the airways of the lungs for 4 to 6 hours.  Xopenex