Which is best? Use o2 only when o2 level gets below 90% or just use it periodically
through out the day regardless of the level. If I use the o2 it may only take a few minutes to be above the 90% level. Is there some rule I should follow? Thanks, Karl
All user-generated information on this site is the opinion of its author only and is not a substitute for medical advice or treatment for any medical conditions. Members and guests are responsible for their own posts and the potential consequences of those posts detailed in our Terms of Service.