Correlates of oxygen desaturation in COPD

Chronic obstructive pulmonary disease (COPD) is the globally accepted term to describe the spectrum of respiratory conditions that includes chronic bronchitis, emphysema and long standing chronic asthma that has become less responsive to therapy. It is characterised by airflow obstruction which is usually progressive, not fully reversible and does not change markedly over several months. COPD ... ................
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