title: Effect of 15 hours per day oxygen therapy on patients with chronic airways obstruction.
mesh_terms: D001794:Blood Pressure; D002302:Cardiac Output; D004311:Double-Blind Method; D005541:Forced Expiratory Volume; D006439:Hemodynamics; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000503:physiopathology / Q000628:therapy*; D008297:Male; D008875:Middle Aged; D010100:Oxygen; D010102:Oxygen Inhalation Therapy; D005082:Physical Exertion; D011652:Pulmonary Circulation; D012119:Respiration; D012129:Respiratory Function Tests; D014109:Total Lung Capacity; D014655:Vascular Resistance; D014797:Vital Capacity; D014939:Work of Breathing
chemical_list: D010100:Oxygen