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Doctor insights on: Interpreting Lung Function Tests

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Can a normal pulmonary function test (spirometry test) rule out COPD and emphysema?

Can a normal pulmonary function test (spirometry test) rule out COPD and emphysema?

Yes: You will have abnormal lung function test if you have COPD or emphysema. Do note that smoking is not good for you at any amount and some genetically-susceptible people may get emphysema even with light tobacco exposure. ...Read more

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Lung (Definition)

Deoxygenated blood enters the lungs from the right side of the heart and travels to the lungs. When you inspire, oxygen flows into the lungs, transverses the capilliares and attaches to hemoglobin down a gradient. At the same time, co2 diffuses into the capilaries and is expelled with exhalation. Oxygen rich blood then flows to the left side of the heart and into the ...Read more


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What are kidney function tests?

What are kidney function tests?

Several labs: To assess kidney function, the BUN and creatinine levels will be checked. They can be compared to the levels in the urine too. A better measure is called the GFR or glomerular filtration rate. A urinalysis to look for protein, blood, concentration ability, and so on is also helpful. ...Read more

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Electrical heart malfunction. What tests, scans are needed?

Electrical heart malfunction. What tests, scans are needed?

Electrical: The evaluation depends on history, physical and what the apparent electrical malfunction is. There are many possible tests and no fixed menu of evaluation. ...Read more

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Cardiac MRI, CTPA, EGC 's, echo's, Chest X-rays, PET scan, blood tests, ECG stress test. All these tests, no diagnosis. Could something been missed?

Cardiac MRI, CTPA, EGC 's, echo's, Chest X-rays, PET scan, blood tests, ECG stress test. All these tests, no diagnosis. Could something been missed?

Laboratory tests: Difficult to answer your question without knowing the symptoms and the physical examination that prompted the imaging studies and blood tests. What do your physicians suggest is the step? ...Read more

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

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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Could liver function tests reveal autoimmune hepatitis?

Could liver function tests reveal autoimmune hepatitis?

Yes: Liver function tests are often elevated in autoimmune hepatitis. This is a non- specific test. If the liver function tests are elevated additional diagnostic tests will be necessary. The anti smooth muscle antibody is one of the most important in pointing to this diagnosis. Tests for other liver diseases such as hepatitis and primary biliary cirrhosis are usually part of the evaluation. ...Read more

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Would a pulmonary function test accurately diagnose asthma?

Would a pulmonary function test accurately diagnose asthma?

Nearly essential: Asthma is not one illness, but several processes that appear in greater or lesser degrees in any one affected individual. Together they can lead to the functional problems we recognize as asthma. Pulmonary function tests measure air flow and volumes; accurately performed PFT's are indispensable in the diagnosis and management of asthma and COPD. ...Read more

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Besides spirometry test, x ray, echocardiogram at rest, are there any other tests to detect heart failure? Blood tests? Stress test?

Besides spirometry test, x ray, echocardiogram at rest, are there any other tests to detect heart failure? Blood tests? Stress test?

Yes: A cardiac catheterization can determine heart function as well as measure pressures. Spirometry measures lung function, not heart failure. Sometimes this is checked to rule out pulmonary dysfunction as a contributor to the patient's problems. Nuclear scans and specialized ct scans can also give this information. As already mentioned, there is also a blood test called bnp. ...Read more

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Would lung cancer cause enlarged hilar and mediasternal nodes, GGO on Chest CT and impaired gas exchange. Other lung function tests are normal?

Would lung cancer cause enlarged hilar and mediasternal nodes, GGO on Chest CT and impaired gas exchange. Other lung function tests are normal?

Possibly: There are many different forms of lung cancer however the most common types usually appear as a solitary nodule or mass on CT. GGO can be seen with lymphatic involvement as is suggested by the enlarged lymph nodes described. This can be from infection, cancer or autoimmune diseases such as sarcoidosis and even heart failure. A biopsy of an enlarged lymph node may be required. ...Read more

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Can you have false low readings on mip and mep pulminary function tests?

Yes they may be!: Sure can as these tests are effort dependent and technique dependent. This means ghats if the patient display not produce enough efforts then test may give a falsely low value. The same if the technician doing the test were not competent and not following protocol. If in doubt; have the test repeated elsewhere. ...Read more

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What tests are done to detect lung cancer?

What tests are done to detect lung cancer?

Variety: Depends on risk factors. The more risk factors you have the more serious the investigation. Baseline CXR, possibly CAT scan, sputum samples, up to bronchoscopy with washings and possible biopsy or guided needle biopsy for findings. Currently even starting genetic analysis of tumors to help predict response to chemo/radiation. If really worried start with Pulmonologist ...Read more

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What would cause on lung function tests, DLCO 60-75%, increased TLC and narrowing of air tubes? Finger o2 monitor 90%. Heart is fine, NAD on chest ct

What would cause on lung function tests, DLCO 60-75%, increased TLC and narrowing of air tubes? Finger o2 monitor 90%.  Heart is fine, NAD on chest ct

See below: It would be difficult to say without all the numbers. But, if your TLC is high, then that's an indication of hyperinflation, which goes along with COPD. So does the decreased DLCO. But again, this is just generalities; would be glad to review all you results with you if needed. ...Read more

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Would a liver function test show gallbladder dysfunction?

Would a liver function test show gallbladder dysfunction?

It may,...: As if the ducts get blocked then the liver may get inflamed and the LFT's elevated. ...Read more

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What are the normal kidney function tests?

What are the normal kidney function tests?

Creatinine level: Blood tests to assess kidney function like serum creatinine and a normal ua. ...Read more

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What pulmonary function test used for copd?

What pulmonary function test used for copd?

Spirometry: This is the standard test to determine pulmonary obstructions. If you think this is your case, don;t hesitate being tested and if you smoke- stop now ! ...Read more

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Could sestamibi nuclear stress test only evaluates left ventricular function?

Could sestamibi nuclear stress test only evaluates left ventricular function?

NO: Nuclear stress test are done to evaluate coronary circulation/ blockages/CAD. As lagniappe they provide info re LV function. However, there are less expensive and invasive test that evaluate LV function just as well or better, like echocardiography ...Read more

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Brain meningioma CT scan why kidney function test?

Brain meningioma CT scan why kidney function test?

The dye: With ct scan there is an injection of a dye that could affect the kidneys. The kidney function is checked routinely because the risk of damage from the dye goes high if there is some kidney problems. ...Read more

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