Facts About Allergies » blood oxygen levels http://www.allergydot.com What to do About Allergies and Allergic Reactions Thu, 26 Jan 2012 23:46:06 +0000 en hourly 1 Chronic Obstructive Pulmonary Disease Diagnosis http://www.allergydot.com/2009/05/13/chronic-obstructive-pulmonary-disease-diagnosis/ http://www.allergydot.com/2009/05/13/chronic-obstructive-pulmonary-disease-diagnosis/#comments Wed, 13 May 2009 09:33:12 +0000 Alank http://www.allergydot.com/?p=53 Chronic Obstructive Pulmonary Disease or COPD is a general term that encompasses two conditions, namely chronic bronchitis and emphysema. Both cause obstruction of the airways, though in different ways, and reduce oxygen and carbon dioxide exchange efficiency. Consequently, chronic obstructive pulmonary disease diagnosis requires detailed tests in order to differentiate the two diseases.

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