[oceanperch]

How many hours a day is a min. base line though?

In the case, neuro damage, that we use it is prescribed for 12 hrs. on 12 off.

What is the standard for lung disorders?

[CAPPSMADNESS]

It depends on the amount of tissue damage in the lungs. Some patients seem to have very little need for continuous therapy (only needing it during an exacerbation) while others need to receive continuous therapy. Baseline depends on each patients condition and need. I do not know enoug about this woman's illness to even venture a guess at her baseline.