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COPD (Chronic Obstructive Pulmonary Disease)

What Stage?



My husband has quite a few illnesess eg sleep apnea,diabetic .thyroid.fluid retention previous p.e. epeleptic.he was told he had emphysema a few year ago.we went to the gp the other day and she said he blew out 34 per cent in one second what stage would he be classed as he is only 46


Thank you for visiting NetWellness. On this site, NetWellness experts try to answer general questions about health. Only the health professional who ordered the tests should interpret the results.

However, the pulmonary function test measurement you are referring to is the FEV1.  It is the amount of air exhaled in the first second of a pulmonary function test.  Stages of COPD (or emphysema) are partly determined based on this measurement.  An FEV1 between 30% and 50% usually falls into stage 3 or severe COPD.  The test is dependent on many things however, and it would be impossible to determine without looking at the actual test.  More information can be found on the NetWellness site about emphysema stages at the link below:

Emphysema: Stages and Life Expectancy

Best wishes.

Related Resources:

COPD stages and life expectancy

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Response by:

Karen L Wood, MD Karen L Wood, MD
Clinical Assistant Professor of Pulmonary, Allergy, Critical Care, and Sleep Medicine
College of Medicine
The Ohio State University