I dont remember when my pfts were that high last time, I would guess when I was a lot younger like maybe early teens. I didnt start knowing/ understanding and asking about my pfts until here recently, but Iam curious myself on how old I was when I had good pfts like that.
Hypertonic Saline is an all natural med. all it is is salt and water mixed a certain way and all you do is inhale it with a neb machine using the neb cups. I get it from my CF pharmacy they mix it just right for me and all I have to do is put it in the neb cup. Others have to mix it themselves. Hypertonic Saline raises pfts and it gives the lungs that lubrication that it needs to move the mucous around and out of the lungs, since our lungs are dry any ways. It really helps those that has pfts in high 50s or 60s and higher. I started at 65% and finally got to 90%. Maybe someone else can help explain it better than I can, hope I helped some. You can also do a search on Hypertonic Saline too.