Chronic obstructive pulmonary disease (COPD) is considered to be a complex and heterogeneous disease comprising multiple components. Its clinical presentation, pattern of functional disturbance, disease presentation and pathology varies tremendously between individuals despite the common feature of incompletely reversible airflow obstruction. It is therefore widely accepted that COPD is characterized by discriminable phenotypes that represent specific patterns of these disease features. COPD phenotypes are believed to correlate with outcome parameters such as severity of symptoms, exacerbations, functional loss or death and to require different treatment algorithms.This survey is the result of presentations that were given during an expert conference. It highlights the significance of major comorbidities, genetic, morphologic and inflammatory COPD-phenotypes and their impact on disease progression and treatment modalities.
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