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Doctor insights on: What Does Fev1 Represent What Is Considered To Be A Good Fev1 Level

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What does fev1 represent? What is considered to be a good fev1 level?

What does fev1 represent? What is considered to be a good fev1 level?

Lung function: The fev1 stands for forced expiratory volume in the 1st second of a lung function test. It gives a picture of how fast the air is able to be expelled from the airways. A "normal" number is really dependent on multiple factors, but generally >80% predicted is acceptable. ...Read more

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Dr. Payam Rafat
53 doctors shared insights

Fev1 (Definition)

This is the forced expiratory volume in 1 second and is the amount of air one can rapidly expire after a deep breath in 1 second. It is a component of pulmonary function tests, and along with other aspects of the test can help diagnosis lung disease or the severity of certain kinds ...Read more


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Ct show bullae both lung upper lobe.Fev1 96 fvc 102 fev1/fvc 96 tlc 108 dsbhb 75 dco 87 d/v asbhb 85.Normal bronchoscopy, is it emphysema which stage?

Ct show bullae both lung upper lobe.Fev1 96 fvc 102 fev1/fvc 96 tlc 108 dsbhb 75 dco 87 d/v asbhb 85.Normal bronchoscopy, is it emphysema which stage?

Very very mild: You have anatomic emphysema but no functional impairment thus it's very, very mild. If you smoke, please stop. Consider whether you have occupational exposure to toxic fumes? If no to both, you should be checked for alpha-1 antitrypsin deficiency. ...Read more

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What is the definition or description of: fev1?

What is the definition or description of: fev1?

Forced exp volume: This is the forced expiratory volume in 1 second and is the amount of air one can rapidly expire after a deep breath in 1 second. It is a component of pulmonary function tests, and along with other aspects of the test can help diagnosis lung disease or the severity of certain kinds of diseases like copd. ...Read more

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How long can people live with a fev1 of 54 percent?

How long can people live with a fev1 of 54 percent?

Astham: You might be surprised that many individuals develop tolerance/adjustment to that low number and are conducting daily lives not showing respiratory distress at rest. However it's not healthful to be desturated as metabolic processes in the human body rely on a good supply of oxygen. ...Read more

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FVC 3.54 pre meas 4.32 ref 122. FEV1 2.80 pre meas 4.32 pre ref 107. FEV1/FVC ref 80 pre meas 69. FEF 25-75% 2.73 pre meas 5.79 pre ref 86. COPD?

FVC 3.54 pre meas 4.32 ref 122. FEV1 2.80 pre meas 4.32 pre ref 107. FEV1/FVC ref 80 pre meas 69. FEF 25-75% 2.73 pre meas 5.79 pre ref 86. COPD?

Unlikely: You may need DLCO also to be sure. Check with your friendly lung doc and have it checked out. Probably nothing but better be safe. Good luck and all the best. ...Read more

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What is fev1 and fvc?

What is fev1 and fvc?

Lung tests: Fev1 -- forced expiratory volume in one second; what percent of the air in your lungs you can force out during the first second, compared with how much you can force out altogether. Fvc -- forced vital capacity. The total amount of air you can blow out of your lungs with one exhalation. ...Read more

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FEV1 was 35, but improved to 38 after a br trtmnt. He was given some new medications. Can this really change the FEV1 or will it get just get worse?

 FEV1 was 35, but improved to 38 after a br trtmnt.  He was given some new medications. Can this really change the FEV1 or will it get just get worse?

Bronchodilators: Medications that help open up the airways when treating diseases such as asthma or COPD are available with a few different mechanisms of action. It depends whether the person is acutely sick on top of underlying lung disease or if it's stable underlying lung disease. Most of these medications are meant to slow further decline of FEV1. ...Read more

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Low mip and mep with no cause from extensive testing. Can this just be normal? Normal fev1, fvc and tlc also

Low mip and mep with no cause from extensive testing. Can this just be normal? Normal fev1, fvc and tlc also

See below: this could be just normal for you or you could have some muscle weakness. If you've had extensive testing, then I would just follow the mips and meps every 6-12 months to ensure they are not continueing to get worse. ...Read more

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I have COPD my fev1 in August was 97% it decline to 86% in September and it fall to 75% in December, what's happening please advise ?

I have COPD my fev1 in August was 97% it decline to 86% in September and it fall to 75% in December, what's happening please advise ?

More info: This would be a good question for HealthTap Prime. Info to have on hand at the time of the appointment would include the full spirometry or pulmonary function test report to include the FEV1/FVC ratio, a list of any med health changes or exposure to environmental contaminants. A family history would also be helpful, given your young age, especially lung or liver disease. Weight/height also. ...Read more

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I have COPD in sep my fev1 was 86% before 3 day it go down to 75% I feel my symptoms suddnly worsened before 1 week what's happening ?

A viral upper: respiratory infection is one of several conditions that can trigger an exasurbation of COPD.We need more clinical information in order to try and answer your question. ...Read more

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FEV1 60% under DLCO-Dsb 86%, D/VAsb 78% VAsb 110%. This past year is a different format and shows diffusing capacity DLCO 68%, DLCO/VA 67%, VA 103%?

FEV1 60% under DLCO-Dsb 86%, D/VAsb 78% VAsb 110%. This past year is a different format and shows diffusing capacity DLCO 68%, DLCO/VA 67%, VA 103%?

Abnormal asthma or: copd [chronic obstructive lung disease] see lung dr. for evaluation which it appears you have , never smoke this is a death sentence and will only get worse or other toxic things to lungs ...Read more

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Thank u, what would you say has a great positive predictive value for mortality within a year: 1. FEV1 < 30%, 2. 6 minute walk test distance < 250m?

Thank u, what would you say has a great positive predictive value for mortality within a year: 1. FEV1 < 30%, 2. 6 minute walk test distance < 250m?

Depends: If lung disease is advanced with no other significant comorbidities- FEV1 will probably predict best. If multiple comorbidities, including heart conditions, the walk test will probably predict better. ...Read more

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Pft study showed: fvc 67%, fev1 73%, their ratio 88%. Rv 52%, tlc 71%, their ratio 20%. Dlco 76%, and dlco /va 109%. What is your impression. Thank you.

Pft study showed: fvc 67%, fev1 73%, their ratio 88%. Rv 52%, tlc 71%, their ratio 20%. Dlco 76%, and dlco /va 109%. What is your impression. Thank you.

See below: The numbers you listed are indicative of a restrictive ventilatory defect. I would need to know your history and possibly imaging to better tell you what's going on. If you would like to contact me, I'd be glad to help out. ...Read more

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My FEV1/FVC is 85.7% , and the dr is saying for me take spiriva why do i need to take it if my PFT resutl is normal? is it a must to take it !!?

My FEV1/FVC is 85.7% , and the dr is saying for me take spiriva why do i need to take it if my PFT resutl is normal? is it a must to take it !!?

Hard to Say: Only knowing your FEV1/FVC ratio does not give enough information to answer your question. Spiriva is typically used for COPD or emphysema or added to other medications for asthma. I would not ignore what your doctor told you and if you are unsure about using a medication you should always discuss that with your doctor. ...Read more

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My spirometry result are fvc 78% fev1 82% fev1/fvc 109% what does it mean ?

My spirometry result are fvc 78% fev1 82% fev1/fvc 109% what does it mean ?

Test interpretation: This test should be interpreted in the context of your history. Since you have normal airflow in the larger airways, I would recommend checking the smaller airway function values, and repeat testing. There is a range of normal values, and your own best value may be determined upon repeat testing. ...Read more

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Female.55.copd.latest tests.fev1 48%.f.v.c.72% ratio 70%.use no inhalers.mild symptoms.prognosis?

Female.55.copd.latest tests.fev1 48%.f.v.c.72% ratio 70%.use no inhalers.mild symptoms.prognosis?

Fair to good: Your numbers show mild impairment of FEV1.0/FVC ratio. Several things you can do: If you smoke, please stop. Make certain you get a flu shot annually and a pneumonia vaccine once. Exercise daily and maintain a healthy weight. If you exercise tolerance decreases or your symptoms increase see your doctor. Thanks for trusting HealthTap! ...Read more

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My fev1/fvc was 76 is this within normal range or abnormal am 46 5ft4 weight 13 stone female ex smoker .

My fev1/fvc was 76 is this within normal range or abnormal am 46 5ft4 weight 13 stone female ex smoker .

FEV1/FVC ratio: This is normal. Your predicted value based on the numbers provided is 80.36. The lower limit of normal is 69.65. ...Read more