title: Intermittent positive-pressure breathing in chronic obstructive pulmonary disease.
mesh_terms: D002245:Carbon Dioxide / Q000097:blood; D002908:Chronic Disease; D002986:Clinical Trials as Topic; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007545:Isoproterenol / Q000627:therapeutic use; D008171:Lung Diseases / Q000628:therapy*; D008297:Male; D010100:Oxygen / Q000097:blood; D010919:Placebos; D011175:Positive-Pressure Respiration; D012131:Respiratory Insufficiency / Q000628:therapy*; D013147:Spirometry; D013997:Time Factors
chemical_list: D010919:Placebos; D002245:Carbon Dioxide; D007545:Isoproterenol; D010100:Oxygen