Maybe what I've heard is wrong, but two CF clinics I've visited have told me different CF clinics can and do use different "expected outcomes" based on the region, etc. It all depends which they plug into their machines as to what the "predicted" should be for someone of your height, weight, race, etc.
I dont' know why I would have been told something different than what ya'll mentioned, and I have no idea which of the "two" these clinics used, but I have the luxury of having my PFT reports all in hard copy in my filing cabinet and when I look, even though I'm at the same weight and height and age, the different clinics DO in fact predict me at very different numbers (even when I have similar liters). Odd. Actually, when comparing previous predicted outcomes and what my actual liters were, I would have been considered much sicker at a previous clinic than what I would be at my current clinic, even when taking into account age.
They've always (every clinic I've been seen at) told me percentages are very rough predictions and to get actual indication of lung health and FEV1 you MUST look at the actual liters you blow out, etc. The raw number (i.e. 1.5, 2.3, etc.), as that is something that you CAN track from center to center, while predicted FEV1 is not. Does that make sense? Its always made perfect sense to me and also makes me always keep a more open eye to the liters and NOT necessarily just on FEV1 when charting my disease progression. But, that's just what I've heard and SEEN on MY particular medical reports.
<img src="i/expressions/face-icon-small-smile.gif" border="0">
I dont' know why I would have been told something different than what ya'll mentioned, and I have no idea which of the "two" these clinics used, but I have the luxury of having my PFT reports all in hard copy in my filing cabinet and when I look, even though I'm at the same weight and height and age, the different clinics DO in fact predict me at very different numbers (even when I have similar liters). Odd. Actually, when comparing previous predicted outcomes and what my actual liters were, I would have been considered much sicker at a previous clinic than what I would be at my current clinic, even when taking into account age.
They've always (every clinic I've been seen at) told me percentages are very rough predictions and to get actual indication of lung health and FEV1 you MUST look at the actual liters you blow out, etc. The raw number (i.e. 1.5, 2.3, etc.), as that is something that you CAN track from center to center, while predicted FEV1 is not. Does that make sense? Its always made perfect sense to me and also makes me always keep a more open eye to the liters and NOT necessarily just on FEV1 when charting my disease progression. But, that's just what I've heard and SEEN on MY particular medical reports.
<img src="i/expressions/face-icon-small-smile.gif" border="0">