What is your predicted FEV1?

tara

New member
I had an appointment for an exacerbation on Monday. I've been given some oral antibiotics and should be good to go in a few days, I hope.

But my question stems from my PFT. The doctor's office used to have my predicted FEV1 at 3.19L. I noticed everytime I went to clinc my predicted was lower, 2.99L. (but this made my percentage higher, so I wasn't complaining, it made me look better!)

On Monday I went in and mentioned this to my doctor and she said "hold on a minute, we're supposed to use a new calculation so our results are the most standard with the rest of the country according to...." And I didn't catch who she was talking about. I think she said CF Foundation, but I'm not sure. Anyone else have a clinic doing this?

Regardles, my "new" predicted is a mere 2.74L. That seems oddly low, doesn't it? In my exacrerbated state I only blow 1.3L. That is pretty low for me. 1.5 is about my baseline.

Here are my stats:

Female
5'4" tall
115lbs
I don't smoke
I'm 31 years old.

Gosh, that felt like I was writing an add for the personals. lol Anyway, does anyone have similar stats that I can compare your predicted FEV1? I google the crap out of this topic and couldn't find any type of chart or calculation as to how the predicted is, well, predicted!

If you respond with your predicted, please respond with your age, height, weight and sex.

Thanks in advance!
 

tara

New member
I had an appointment for an exacerbation on Monday. I've been given some oral antibiotics and should be good to go in a few days, I hope.

But my question stems from my PFT. The doctor's office used to have my predicted FEV1 at 3.19L. I noticed everytime I went to clinc my predicted was lower, 2.99L. (but this made my percentage higher, so I wasn't complaining, it made me look better!)

On Monday I went in and mentioned this to my doctor and she said "hold on a minute, we're supposed to use a new calculation so our results are the most standard with the rest of the country according to...." And I didn't catch who she was talking about. I think she said CF Foundation, but I'm not sure. Anyone else have a clinic doing this?

Regardles, my "new" predicted is a mere 2.74L. That seems oddly low, doesn't it? In my exacrerbated state I only blow 1.3L. That is pretty low for me. 1.5 is about my baseline.

Here are my stats:

Female
5'4" tall
115lbs
I don't smoke
I'm 31 years old.

Gosh, that felt like I was writing an add for the personals. lol Anyway, does anyone have similar stats that I can compare your predicted FEV1? I google the crap out of this topic and couldn't find any type of chart or calculation as to how the predicted is, well, predicted!

If you respond with your predicted, please respond with your age, height, weight and sex.

Thanks in advance!
 

tara

New member
I had an appointment for an exacerbation on Monday. I've been given some oral antibiotics and should be good to go in a few days, I hope.

But my question stems from my PFT. The doctor's office used to have my predicted FEV1 at 3.19L. I noticed everytime I went to clinc my predicted was lower, 2.99L. (but this made my percentage higher, so I wasn't complaining, it made me look better!)

On Monday I went in and mentioned this to my doctor and she said "hold on a minute, we're supposed to use a new calculation so our results are the most standard with the rest of the country according to...." And I didn't catch who she was talking about. I think she said CF Foundation, but I'm not sure. Anyone else have a clinic doing this?

Regardles, my "new" predicted is a mere 2.74L. That seems oddly low, doesn't it? In my exacrerbated state I only blow 1.3L. That is pretty low for me. 1.5 is about my baseline.

Here are my stats:

Female
5'4" tall
115lbs
I don't smoke
I'm 31 years old.

Gosh, that felt like I was writing an add for the personals. lol Anyway, does anyone have similar stats that I can compare your predicted FEV1? I google the crap out of this topic and couldn't find any type of chart or calculation as to how the predicted is, well, predicted!

If you respond with your predicted, please respond with your age, height, weight and sex.

Thanks in advance!
 

tara

New member
I had an appointment for an exacerbation on Monday. I've been given some oral antibiotics and should be good to go in a few days, I hope.

But my question stems from my PFT. The doctor's office used to have my predicted FEV1 at 3.19L. I noticed everytime I went to clinc my predicted was lower, 2.99L. (but this made my percentage higher, so I wasn't complaining, it made me look better!)

On Monday I went in and mentioned this to my doctor and she said "hold on a minute, we're supposed to use a new calculation so our results are the most standard with the rest of the country according to...." And I didn't catch who she was talking about. I think she said CF Foundation, but I'm not sure. Anyone else have a clinic doing this?

Regardles, my "new" predicted is a mere 2.74L. That seems oddly low, doesn't it? In my exacrerbated state I only blow 1.3L. That is pretty low for me. 1.5 is about my baseline.

Here are my stats:

Female
5'4" tall
115lbs
I don't smoke
I'm 31 years old.

Gosh, that felt like I was writing an add for the personals. lol Anyway, does anyone have similar stats that I can compare your predicted FEV1? I google the crap out of this topic and couldn't find any type of chart or calculation as to how the predicted is, well, predicted!

If you respond with your predicted, please respond with your age, height, weight and sex.

Thanks in advance!
 

tara

New member
I had an appointment for an exacerbation on Monday. I've been given some oral antibiotics and should be good to go in a few days, I hope.

But my question stems from my PFT. The doctor's office used to have my predicted FEV1 at 3.19L. I noticed everytime I went to clinc my predicted was lower, 2.99L. (but this made my percentage higher, so I wasn't complaining, it made me look better!)

On Monday I went in and mentioned this to my doctor and she said "hold on a minute, we're supposed to use a new calculation so our results are the most standard with the rest of the country according to...." And I didn't catch who she was talking about. I think she said CF Foundation, but I'm not sure. Anyone else have a clinic doing this?

Regardles, my "new" predicted is a mere 2.74L. That seems oddly low, doesn't it? In my exacrerbated state I only blow 1.3L. That is pretty low for me. 1.5 is about my baseline.

Here are my stats:

Female
5'4" tall
115lbs
I don't smoke
I'm 31 years old.

Gosh, that felt like I was writing an add for the personals. lol Anyway, does anyone have similar stats that I can compare your predicted FEV1? I google the crap out of this topic and couldn't find any type of chart or calculation as to how the predicted is, well, predicted!

If you respond with your predicted, please respond with your age, height, weight and sex.

Thanks in advance!
 

randmel89

New member
MyFEV1 pred is 3.65L but I can only blow 1.29L and that is on my good days.

My age is 33
My height is 6 foot
My weight is 186lbs
My Sex is Female

Hopes this helps you out a little. I would like to hear what others have as a pred and what they actually blow on there FEV1 just to see.

Hugs
 

randmel89

New member
MyFEV1 pred is 3.65L but I can only blow 1.29L and that is on my good days.

My age is 33
My height is 6 foot
My weight is 186lbs
My Sex is Female

Hopes this helps you out a little. I would like to hear what others have as a pred and what they actually blow on there FEV1 just to see.

Hugs
 

randmel89

New member
MyFEV1 pred is 3.65L but I can only blow 1.29L and that is on my good days.

My age is 33
My height is 6 foot
My weight is 186lbs
My Sex is Female

Hopes this helps you out a little. I would like to hear what others have as a pred and what they actually blow on there FEV1 just to see.

Hugs
 

randmel89

New member
MyFEV1 pred is 3.65L but I can only blow 1.29L and that is on my good days.

My age is 33
My height is 6 foot
My weight is 186lbs
My Sex is Female

Hopes this helps you out a little. I would like to hear what others have as a pred and what they actually blow on there FEV1 just to see.

Hugs
 

randmel89

New member
MyFEV1 pred is 3.65L but I can only blow 1.29L and that is on my good days.

My age is 33
My height is 6 foot
My weight is 186lbs
My Sex is Female

Hopes this helps you out a little. I would like to hear what others have as a pred and what they actually blow on there FEV1 just to see.

Hugs
 

lightNlife

New member
Hi there. I like long walks on the beach, heavily salted foods, and I love to curl up in front of an air filter at the end of a long day.

Okay, goofiness aside, here goes the fun math <img src="i/expressions/face-icon-small-smile.gif" border="0">

The predicted FEV1 is calculated according to the following equation, which, as far as I know, is the standardized protocol from the American Thoracic Society. (this is the equation from the year 2000, it may have changed slightly.)

predicted FEV1 = 1.137 - (0.027 x age) + (1.588 x height) for women.

I used this equation and plugged in your numbers, and arrived at a predicted FEV1 of 2.87L. I'm almost positive there's an extra multiplier that goes in the equation to account for a CFer's lungs. Keep in mind too that there's some crazy math being applied within the software program as well that takes your previous data into consideration.

My age is 27, weight 123lbs, and height 1.65m. My calculated predicted FEV1 would be 3.02L. But like I said, there's some other things relating to past performance that gets figured in as well, but it's not incredibly significant. I'm guessing it only changes the predicted by 10-15mL. Last Wed. at my clinic appointment my FEV1 was 2.10L.

I hope that sheds a bit of light on things. I like to keep my RTs on their toes, so I'll be sure to get a more in-depth answer next time I go for spirometry.
 

lightNlife

New member
Hi there. I like long walks on the beach, heavily salted foods, and I love to curl up in front of an air filter at the end of a long day.

Okay, goofiness aside, here goes the fun math <img src="i/expressions/face-icon-small-smile.gif" border="0">

The predicted FEV1 is calculated according to the following equation, which, as far as I know, is the standardized protocol from the American Thoracic Society. (this is the equation from the year 2000, it may have changed slightly.)

predicted FEV1 = 1.137 - (0.027 x age) + (1.588 x height) for women.

I used this equation and plugged in your numbers, and arrived at a predicted FEV1 of 2.87L. I'm almost positive there's an extra multiplier that goes in the equation to account for a CFer's lungs. Keep in mind too that there's some crazy math being applied within the software program as well that takes your previous data into consideration.

My age is 27, weight 123lbs, and height 1.65m. My calculated predicted FEV1 would be 3.02L. But like I said, there's some other things relating to past performance that gets figured in as well, but it's not incredibly significant. I'm guessing it only changes the predicted by 10-15mL. Last Wed. at my clinic appointment my FEV1 was 2.10L.

I hope that sheds a bit of light on things. I like to keep my RTs on their toes, so I'll be sure to get a more in-depth answer next time I go for spirometry.
 

lightNlife

New member
Hi there. I like long walks on the beach, heavily salted foods, and I love to curl up in front of an air filter at the end of a long day.

Okay, goofiness aside, here goes the fun math <img src="i/expressions/face-icon-small-smile.gif" border="0">

The predicted FEV1 is calculated according to the following equation, which, as far as I know, is the standardized protocol from the American Thoracic Society. (this is the equation from the year 2000, it may have changed slightly.)

predicted FEV1 = 1.137 - (0.027 x age) + (1.588 x height) for women.

I used this equation and plugged in your numbers, and arrived at a predicted FEV1 of 2.87L. I'm almost positive there's an extra multiplier that goes in the equation to account for a CFer's lungs. Keep in mind too that there's some crazy math being applied within the software program as well that takes your previous data into consideration.

My age is 27, weight 123lbs, and height 1.65m. My calculated predicted FEV1 would be 3.02L. But like I said, there's some other things relating to past performance that gets figured in as well, but it's not incredibly significant. I'm guessing it only changes the predicted by 10-15mL. Last Wed. at my clinic appointment my FEV1 was 2.10L.

I hope that sheds a bit of light on things. I like to keep my RTs on their toes, so I'll be sure to get a more in-depth answer next time I go for spirometry.
 

lightNlife

New member
Hi there. I like long walks on the beach, heavily salted foods, and I love to curl up in front of an air filter at the end of a long day.

Okay, goofiness aside, here goes the fun math <img src="i/expressions/face-icon-small-smile.gif" border="0">

The predicted FEV1 is calculated according to the following equation, which, as far as I know, is the standardized protocol from the American Thoracic Society. (this is the equation from the year 2000, it may have changed slightly.)

predicted FEV1 = 1.137 - (0.027 x age) + (1.588 x height) for women.

I used this equation and plugged in your numbers, and arrived at a predicted FEV1 of 2.87L. I'm almost positive there's an extra multiplier that goes in the equation to account for a CFer's lungs. Keep in mind too that there's some crazy math being applied within the software program as well that takes your previous data into consideration.

My age is 27, weight 123lbs, and height 1.65m. My calculated predicted FEV1 would be 3.02L. But like I said, there's some other things relating to past performance that gets figured in as well, but it's not incredibly significant. I'm guessing it only changes the predicted by 10-15mL. Last Wed. at my clinic appointment my FEV1 was 2.10L.

I hope that sheds a bit of light on things. I like to keep my RTs on their toes, so I'll be sure to get a more in-depth answer next time I go for spirometry.
 

lightNlife

New member
Hi there. I like long walks on the beach, heavily salted foods, and I love to curl up in front of an air filter at the end of a long day.

Okay, goofiness aside, here goes the fun math <img src="i/expressions/face-icon-small-smile.gif" border="0">

The predicted FEV1 is calculated according to the following equation, which, as far as I know, is the standardized protocol from the American Thoracic Society. (this is the equation from the year 2000, it may have changed slightly.)

predicted FEV1 = 1.137 - (0.027 x age) + (1.588 x height) for women.

I used this equation and plugged in your numbers, and arrived at a predicted FEV1 of 2.87L. I'm almost positive there's an extra multiplier that goes in the equation to account for a CFer's lungs. Keep in mind too that there's some crazy math being applied within the software program as well that takes your previous data into consideration.

My age is 27, weight 123lbs, and height 1.65m. My calculated predicted FEV1 would be 3.02L. But like I said, there's some other things relating to past performance that gets figured in as well, but it's not incredibly significant. I'm guessing it only changes the predicted by 10-15mL. Last Wed. at my clinic appointment my FEV1 was 2.10L.

I hope that sheds a bit of light on things. I like to keep my RTs on their toes, so I'll be sure to get a more in-depth answer next time I go for spirometry.
 
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