title: [Letter: Spirographic evaluation of respiratory insufficiency in chronic obstructive bronchopneumopathies].
mesh_terms: D002908:Chronic Disease; D006801:Humans; D006935:Hypercapnia / Q000209:etiology; D000860:Hypoxia / Q000209:etiology; D008173:Lung Diseases, Obstructive / Q000503:physiopathology*; D008449:Maximal Expiratory Flow-Volume Curves; D012131:Respiratory Insufficiency / Q000209:etiology*; D013147:Spirometry
vernacular_title: Evaluation spirographique de l'insuffisance respiratoire dans les bronchopneumopathies chroniques obstructives