Only one of my two daughters is on Pulmozyme. She was started on it after her first hospitalization. Her PFTs had dropped from 89% to 61% in three weeks due to a MRSA flare up. She does have a 'normal' productive cough. Her PFTs are better now than they have ever been. I think some of it is just that she can perform them better now than she could when she was only 7 or 8 years old. It is definately a learned technique<img src="i/expressions/face-icon-small-smile.gif" border="0">
She did try hypertonic saline, but didn't tolerate it well at all. Our clinic has you try it in the PFT lab, and her FEV dropped into the 30s after trying it. So, Dr. said we are not going this route with her, and she went on Pulmozyme. She tolerates it fine.
My younger one is not on Pulmozyme nor hypertonic saline, and she does not have a 'normal' productive cough. She has a cough now, but is also on Tobi and Cipro/placebo because of a new culture of PA and the EPIC study. Their CF doc hasn't even mentioned the possibility of putting her on either one as of yet. Her PFTs have gotten better over the last year as well, but I still think it is learning the technique.