Emphysema and chronic bronchitis
The diagnosis of chronic obstructive pulmonary disease (COPD) is predicated upon the recognition of its two major forms: emphysema and chronic bronchitis. These distinct entities represent different manifestations of COPD, although they frequently coexist in the same individual. Physiologic impairment occurs as a consequence of the impediment of airflow and air trapping as measured by pulmonary function testing. Other forms of airflow obstruction are discussed in the chapters on bronchial obstruction (Chapter 5), asthma (Chapter 15), and pathology of small airways (Chapter 25). © 2008 Springer New York.
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