Hi Havok....I guess a zillion things happening at the same time led to my decline. At the time I was running 3 miles a day, I was still getting sick and wound up in the hospital 3 or 4 times a year for respiratory related problems the docs chalked up to either asthma or bronchitis/pneumonia. The thing is, I bounced back though after I was treated and my lung functions were sitting at around 80 ish. Things started to get really messy when my diaphragm weakened rapidly to the point of hindering my breathing effort tremendously. Docs have many theories as to why this happened ranging from viral infection to myopathy...At this point, I was still without a CF dx, but my respiratory status spiraled out of control. I could not go up a flight of stairs without feeling like I was dying and dropping my sats into the 70's. Because I was so weakened, the infections came on back to back.....I could not clear my secretions so they sat in my lungs creating the perfect breeding ground for bacterial invasion.
I did ultimately wind up on the vent and trached because Bi Pap was ineffective, this was nearly 8 years ago. It was then that the docs finally cultured me (I had never had any sputum cultures prior to this, they would just treat me empirically with broad spectrum antibiotics, I would get better and be sent on my merry way) and found PA, B. cepacia and Staph. When I was vented, my FEV was in the teens, a good part of it because I simply could not force the air out of my lungs, I was that weak.
I have since gotten stronger, I am still on the vent half of the day but at least I can come off with O2. My FEV is 35-38 now, some of it is because of my diaphragm, but a good part of it is because of the obstructive component of my CF (from what my pulmo says). Because I have a trach, it does complicate things, I am more prone to infections but I have to say, my trach has saved me several times over. I easily go from stable to unstable extremely quickly these days and without too much warning.
I don't know if my CF would have been diagnosed if I didn't have the issues with my diaphragm...it was actually an incidental type of diagnosis. I probably would have kept having progressive issues with my "asthma" and frequent infections. My respiratory decline would not have been as sharp as it has been over these last 8 or so years, perhaps I would have finally gotten a diagnosis in my late 40's instead had I not had these other complications to throw things in fast forward. Who knows...perhaps a whammy of an infection would have tanked my PFT's instead of a gradual decline. I guess with CF, you just never know....All I know is what is happening to me now and how dramatically it has changed my life. The treatments have helped as far as bronchospasm and keeping some of those colonies at bay (Colistin, HTS, duonebs, pulmicort, pulmozyme, vesting etc...) I think I would be worse off without them.
I hope I answered your questions <img src="i/expressions/face-icon-small-smile.gif" border="0"> Feel free to ask more if you like.
Jenn 39 w/CF