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Old 03-19-2014
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Default asthma vs COPD

how to differentiate between asthma and COPD as both have decrease breath sounds , long expiration phase , and hypoxxemia , is there a clinical way to differentiate it ?
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Old 03-19-2014
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reversibility of bronchoconstriction in asthma with albuterol (increased FEV1)
and DLco is decreased in COPD whereas it is normal or high in asthma
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sorry i missed the word "clinical"

i guess there are no strong clues in PE suggesting either one
main emphasis would be on Hx chronic smoker vs atopic from childhood or something like that
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Old 03-20-2014
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Quote:
Originally Posted by hydrocephalus View Post
how to differentiate between asthma and COPD as both have decrease breath sounds , long expiration phase , and hypoxxemia , is there a clinical way to differentiate it ?
Asthma : episodic wheezing, may have precipitating factors, any age group, eosinophilia present, most important - reversible airway obstruction : improvement in FEV1 by > 20 % following bronchodilator therapy

COPD: almost always a smoker, older age group, chronic cough with expectoration : at least 3 months in a year for at least 2 years, exacerbation is due to an infection, airway obstruction may improve but does not normalize with bronchodilator therapy
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