couple of things occurred to me reading your post (forgive a bit of repetition.)
first, it is entirely normal for fev1 to take a while to recover after IV antibiotics. generally my doctors like to see the fev1 starting to go up before i'm off the meds, but it has taken me as long as several months to get back to baseline, depending on what all is going on.
does your daughter have an asthma component to her CF? (i noticed you said she was on steroids.) asthma, i believe, can cause greater fluctuation in fev1, and can make it look falsely low. (i think.) it sounds like her numbers have been pretty steady in the past, so this may not relate to her. but cf is a disease of change, and new patterns emerge all the time.
lastly, if your daughter is still not feeling 100% or if her numbers aren't bouncing back in a couple of months, you might want to push for another round of different IV antibiotics. i've found that being aggressive is the best way to deal with this disease. losing precious lung function is a lot of times preventable with more aggressive treatment. (not always, unfortunately.) doing as much as possible while she is young will help her to have that much more of an edge (both in terms of her numbers and her willingness to continue to treat her CF aggressively) into adulthood.
good luck!
first, it is entirely normal for fev1 to take a while to recover after IV antibiotics. generally my doctors like to see the fev1 starting to go up before i'm off the meds, but it has taken me as long as several months to get back to baseline, depending on what all is going on.
does your daughter have an asthma component to her CF? (i noticed you said she was on steroids.) asthma, i believe, can cause greater fluctuation in fev1, and can make it look falsely low. (i think.) it sounds like her numbers have been pretty steady in the past, so this may not relate to her. but cf is a disease of change, and new patterns emerge all the time.
lastly, if your daughter is still not feeling 100% or if her numbers aren't bouncing back in a couple of months, you might want to push for another round of different IV antibiotics. i've found that being aggressive is the best way to deal with this disease. losing precious lung function is a lot of times preventable with more aggressive treatment. (not always, unfortunately.) doing as much as possible while she is young will help her to have that much more of an edge (both in terms of her numbers and her willingness to continue to treat her CF aggressively) into adulthood.
good luck!