[Sleep hypoxemia and oxygen treatment in COPD].
D000368:Aged; D006801:Humans; D000860:Hypoxia / Q000150:complications / Q000628:therapy*; D008173:Lung Diseases, Obstructive / Q000150:complications* / Q000628:therapy; D008297:Male; D008875:Middle Aged; D010102:Oxygen Inhalation Therapy; D012894:Sleep Stages