title: [Respiratory failure in elderly patients with chronic obstructive pulmonary disease].
mesh_terms: D000368:Aged; D000375:Aging; D006801:Humans; D008168:Lung / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000150:complications* / Q000503:physiopathology; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D012131:Respiratory Insufficiency / Q000209:etiology*
chemical_list: D010100:Oxygen