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FEV1
- Thread starter gsplover
- Start date
Technically, I don't believe it is an average number - the value has been normalized -- in otherwords, people with poor lung function, for whatever reason aren't pulling the "normal" value down. This makes sense... its easier for me to think about it if its applied to weight - if a population is generally overweight, then the "average weight" is too high, and therefore kind of meaningless -- normal/healthy weight is lower than the average.
Like Marjolein said, you can be over 100% of "normal" for your hieght, weight, sex, etc.
Chris
25 w/ cf
Like Marjolein said, you can be over 100% of "normal" for your hieght, weight, sex, etc.
Chris
25 w/ cf
Technically, I don't believe it is an average number - the value has been normalized -- in otherwords, people with poor lung function, for whatever reason aren't pulling the "normal" value down. This makes sense... its easier for me to think about it if its applied to weight - if a population is generally overweight, then the "average weight" is too high, and therefore kind of meaningless -- normal/healthy weight is lower than the average.
Like Marjolein said, you can be over 100% of "normal" for your hieght, weight, sex, etc.
Chris
25 w/ cf
Like Marjolein said, you can be over 100% of "normal" for your hieght, weight, sex, etc.
Chris
25 w/ cf
So, from Chris said it sounds like it means everyone's percentage is not in relation to eachother's and that it's on an individual basis? Can you compare my FEV1s to someone else's and determine if one person's lungs are in better shape, or not?
If what Marjolein said is correct and it is on an average, then I think I get it.
I still don't understand how someone can have an FEV1 over 100%.
If what Marjolein said is correct and it is on an average, then I think I get it.
I still don't understand how someone can have an FEV1 over 100%.
So, from Chris said it sounds like it means everyone's percentage is not in relation to eachother's and that it's on an individual basis? Can you compare my FEV1s to someone else's and determine if one person's lungs are in better shape, or not?
If what Marjolein said is correct and it is on an average, then I think I get it.
I still don't understand how someone can have an FEV1 over 100%.
If what Marjolein said is correct and it is on an average, then I think I get it.
I still don't understand how someone can have an FEV1 over 100%.
And does anyone know if there is an FEV1 range where doctors start talking about you needing a lung transplant, or is that based on a individual basis? I thought I heard a long time ago that 40% and below was when you had to start worrying. I'm too close to comfort to that # if it's true. I'm 47% and don't feel in any way that I need to think about a transplant. Just curious.
And does anyone know if there is an FEV1 range where doctors start talking about you needing a lung transplant, or is that based on a individual basis? I thought I heard a long time ago that 40% and below was when you had to start worrying. I'm too close to comfort to that # if it's true. I'm 47% and don't feel in any way that I need to think about a transplant. Just curious.
about 30% and below. but sometimes it is on an individual basis. someone might feel great at 30 and doesnt need a transplant for quite some time. others might feel terrible at just above 30 and cant wait until they fall into the 30 and below category otherwise they will be too frail.
about 30% and below. but sometimes it is on an individual basis. someone might feel great at 30 and doesnt need a transplant for quite some time. others might feel terrible at just above 30 and cant wait until they fall into the 30 and below category otherwise they will be too frail.
L
luke
Guest
Steph,
"predicted" values are dervied from height, weight, sex, age, and race. There are actually several different sets of predicted values but normally doctors use the "knudson" values. With knudson for example "normal" is 80% to 120% because we are all made differently and that is the best educated guess they have. Where PFT's all most handy is comparing if you drop from 110% to 92%. So technically you all still within normal values but have a considerable drop and really need to be treated. hope this helps
luke
"predicted" values are dervied from height, weight, sex, age, and race. There are actually several different sets of predicted values but normally doctors use the "knudson" values. With knudson for example "normal" is 80% to 120% because we are all made differently and that is the best educated guess they have. Where PFT's all most handy is comparing if you drop from 110% to 92%. So technically you all still within normal values but have a considerable drop and really need to be treated. hope this helps
luke
L
luke
Guest
Steph,
"predicted" values are dervied from height, weight, sex, age, and race. There are actually several different sets of predicted values but normally doctors use the "knudson" values. With knudson for example "normal" is 80% to 120% because we are all made differently and that is the best educated guess they have. Where PFT's all most handy is comparing if you drop from 110% to 92%. So technically you all still within normal values but have a considerable drop and really need to be treated. hope this helps
luke
"predicted" values are dervied from height, weight, sex, age, and race. There are actually several different sets of predicted values but normally doctors use the "knudson" values. With knudson for example "normal" is 80% to 120% because we are all made differently and that is the best educated guess they have. Where PFT's all most handy is comparing if you drop from 110% to 92%. So technically you all still within normal values but have a considerable drop and really need to be treated. hope this helps
luke
Ok, my pft's are around 35% , i have never been admited , never been on oxygen, only done iv once, (6 years ago for 2 weeks), I lead a normal life, never gasping for air. I do get tired just by climbing some stairs or running, besides from that, if i dont have a cold, I dont have any major problems. So just to give you an example of how these numbers dont exactly mean that you're almost in need of a transplant.
Ok, my pft's are around 35% , i have never been admited , never been on oxygen, only done iv once, (6 years ago for 2 weeks), I lead a normal life, never gasping for air. I do get tired just by climbing some stairs or running, besides from that, if i dont have a cold, I dont have any major problems. So just to give you an example of how these numbers dont exactly mean that you're almost in need of a transplant.
Just because someones pfts drop to the 30's doesnt mean they are ready for tx. Mine have been there a few times, but it was an acute situation. So far I have been able to bring them back up each time. Sometimes it takes longer, but the point is that they have chronically stayed in that range. As Nocode indicated with her numbers, it isnt based just on that. Its the "quality" along with the pfts, O2 levels, CO2 levels, infections, weight, frame of mind etc. Last year during my worst time I did mention to my doctor that my quality of life sucked (I meant at that time) & she MENTIONED the tx idea. She also told me that she didnt think I was "ready" to serious consider it yet, but wanted to throw it out there so if the time came I wouldnt be so bad & having to make such a decision. The whole idea scared the hell out of me, but its true. I wouldnt want to make a hasty decision in a time of dire circumstances.
Just because someones pfts drop to the 30's doesnt mean they are ready for tx. Mine have been there a few times, but it was an acute situation. So far I have been able to bring them back up each time. Sometimes it takes longer, but the point is that they have chronically stayed in that range. As Nocode indicated with her numbers, it isnt based just on that. Its the "quality" along with the pfts, O2 levels, CO2 levels, infections, weight, frame of mind etc. Last year during my worst time I did mention to my doctor that my quality of life sucked (I meant at that time) & she MENTIONED the tx idea. She also told me that she didnt think I was "ready" to serious consider it yet, but wanted to throw it out there so if the time came I wouldnt be so bad & having to make such a decision. The whole idea scared the hell out of me, but its true. I wouldnt want to make a hasty decision in a time of dire circumstances.