i would ask your Dr. b4 anyone else gives there point.
Have to agree with Papa there.
My mother had idiopathic pulmonary fibrosis. The docs and nurses told us to watch for oxygen dropping below 90. But, that is what we were told to watch for.
Best advice is from your doctor.
Best of luck and health
o2 is 99 percent but sometime feel short of breath. i requested o2 for when in need after i had the biopsy of the lung request was denied, I have idiopathic pulmonary fibrosis bilateral damage when doctor did the biopsy he stated that it look so much like Cancer waiting on the final report to come back been a hard waiting period.