title: The pulmonary gas exchange during the acute exacerbation of chronic respiratory failure.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D002908:Chronic Disease; D006801:Humans; D010100:Oxygen / Q000097:blood; D011652:Pulmonary Circulation; D011659:Pulmonary Gas Exchange; D012131:Respiratory Insufficiency / Q000503:physiopathology*
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen