Talk:Spirometry
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hello, I find the information here really good. I was looking for the actual way that the %predicted scores were formed. I have think that it takes into accound height, age, gender, ethnicity/race. Matt (physiotherapy student)
could we have some normal ranges please? —Preceding unsigned comment added by 77.99.219.14 (talk) 13:48, 13 March 2008 (UTC)
Population studies differ on this point, due both to differences in the studies themselves, non-identical populations that are looked at, and the fact that different "races" actually are statistically different. Different does not imply "superior". The lung is an "optimal" organ. Any changes that make it better at one thing make it worse at another. % predicted is better thought of as % of average. 95% of healthy people will fall within a 40% range of values - or plus minus 20%. But if you have lungs that are 120% of average, and you loose 1/3 of your lung to disease, statistically, you are still within the normal statistical range (80%). Interpretation must take into account the patient's symptoms, and an x-ray or cat scan of the lung (conventional MRI's do not image the lung usefully). The primary determinant of normal lung size is height.
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[edit] PEF - why so early?
Very nice article.
Does anyone know why is it that the PEF (peak expiratory flow) occurs so early?
expiration is due to the elastic forces of the lung. just like a baloon deinflates faster at the start, so do the lungs, since flow depends on the elastic surface tension of the lung.
[edit] Other pulmonary function tests
Anyone able to writ about other pulmonary function tests? I was interested in more information about DLCO, and the differential diagnosis of abnormal values in the DLCO. Ksheka 22:00, 4 August 2006 (UTC)
[edit] Photo?
I've added photos of Peak Flow Meters to the Peak Flow Meter article. If it is relevant to this page, then please can someone add them here too? Thanks --Tomhannen 21:59, 25 March 2007 (UTC)
[edit] Can lung function scores be increased by exercises?
Hello, Great info in the article.... Is there a way for a person to increase FVC and FEV1 through some type of "lung exercises"? (January 2008) —Preceding unsigned comment added by 74.34.101.149 (talk) 13:20, 19 January 2008 (UTC)