title: Breathing pattern and hypercapnia in patients with obstructive pulmonary disease.
mesh_terms: D000328:Adult; D000368:Aged; D006801:Humans; D006935:Hypercapnia / Q000209:etiology* / Q000503:physiopathology; D008173:Lung Diseases, Obstructive / Q000150:complications / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D012119:Respiration; D012129:Respiratory Function Tests; D013990:Tidal Volume