When I was in the hospital recently they put me on a nebuliser for about 10 minutes to increase my Sats from about 84% to about 96%. As soon as it was taken off they went down again. I don't need extra oxygen to help me breathe as such but really need it for the Sats. I now have a new doctor and wonder what the best thing is to use to keep the Sats up so I can ask him about it. Forewarned is forearmed I say !