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Doctor insights on: Is There A Correlation Between Peak Flow And Pulmonary Function Tests

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Why is the difference between volume flow and rate of flow in pulmonary function test?

Why is the difference between volume flow and rate of flow in pulmonary function test?

PFTs...: In pulmonary function testing, volume flow refers to how much air is inhaled or exhaled whereas the rate of flow tests how fast the air is inhaled or exhaled. ...Read more

Pulmonary Function Test (Definition)

Pulmonary function tests is a term used to describe a group of tests done to determine lung function. Spirometry measures the amount of air that can be taken in as well as the flow rate of forcefully exhaled air . A graph is generated and can be used to determine lung function. Likewise lung volumes and diffusing capacity determine the capacity as well as ...Read more


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How much do pulmonary function tests costs?

How much do pulmonary function tests costs?

Variable: Spirometry is the most common pulmonary function test to assess for asthma and other obstructive lung diseases. My fee is $35. To assess for asthma, spirometry is done before and after albuterol and that fee is $55. For complete pfts in the hospital that checks diffusing capacity (dlco), total lung capacity and more, the cost can be upwards of several hundred dollars (at least). ...Read more

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How do you do pulmonary function tests?

Pulmonary function: Pulmonary function testing generally requires a person to sit in a booth and breathe through a mouthpiece. A machine analyzes the flow and volume of air moving trough the lungs. The procedure is benign and not painful. ...Read more

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What is the purpose of completing the pulmonary function tests pre and postdilator?

What is the purpose of completing the pulmonary function tests pre and postdilator?

Pulmonary function: The purpose of doing pulmonary function testing pre- and post- bronchodilator can help to determine responsiveness to the therapy thereby suggesting a diagnosis of asthma, as an example, as opposed to another form of lung disease. ...Read more

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What kind of doctors perform pulmonary function tests and exercise stress tests?

See below: Pfts are usually performed and interpreted by pulmonologists but any internal medicine trained doctor can interpret them. Stress tests are usually done by cardiologists but some internists do them as well. ...Read more

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My doctor said I need to have full pulmonary function tests. What can I expect?

45 Minutes: It takes approximately 45 minutes to complete full pulmonary function tests. The first part of the test will involve measurement of your spirometry (fev1 and fvc); you will be required to take large breaths of air and blow them out through a small tube attached to a machine. Next you will measure lung volumes and tlco (see my answer on tlco elsewhere in this section). The test is non invasive. ...Read more

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Can my asthma be severe even with normal pulmonary function tests? Can my asthma give an elevated temperature?

Yes and No: When asthma is controlled, there should be normal lung function tests. Even individuals with mild asthma can have severe attacks (with decreased lung function) and even die from asthma. During an asthma attack, fever is not a typical finding unless an infection such as a virus is the trigger. Other causes of asthma attacks are allergies, exercise, smoke/irritants, and sinus infections. ...Read more

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How accurate are pulmonary function tests done at a pulmonologists office? What can they detect?

How accurate are pulmonary function tests done at a pulmonologists office? What can they detect?

Accurate: The test is accurate and reproducible but highly dependent on effort and technique. The results are an assessment of lung function. It can detect asthma, emphysema, COPD, and some other airway conditions. It cannot detect pneumonias, tumors or pulmonary emboli or vascular conditions. As always the results need to be interpreted in the context of clinical findings. ...Read more

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Recently had pulmonary function tests that show 40% lung function. I am in search of an adult pectus excuvatum specialist.

Recently had pulmonary function tests that show 40% lung function.  I am in search of an adult pectus excuvatum specialist.

Mgt/follow up: I would suggest a visit with a pulmonary specialist to further investigate the result. The PFT can be repeated and the values confirmed. The symptoms that you are experiencing such as shortness of breath, wheezing, coughing will determine additional testing. These may include an imaging test to view the structure of the lung. I would advise avoiding smoke. ...Read more

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What is the difference between pulmonary function test and methacholine challenge?

What is the difference between pulmonary function test and methacholine challenge?

Different: PFT measures your lung function in its current state. Methacholine challenge is often used when the lung function test is normal but asthma is suspected. If the methacholine test showed a reduction in FEV-1 by 20% at a certain concentration, then the patient is considered to have an overactive airway which is often but not always from asthma. ...Read more

Dr. Hirenkumar Italia
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Respiratory (Definition)

Respiratory is also known as Respiratory system. Pertaining to the work of breathing done by the chest ...Read more