Oxygen therapy without respirator in chronic lung diseases complicated with acute respiratory failure.
D000208:Acute Disease; D000368:Aged; D005260:Female; D006801:Humans; D008173:Lung Diseases, Obstructive / Q000150:complications*; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D010102:Oxygen Inhalation Therapy; D012121:Respiration, Artificial / Q000009:adverse effects; D012131:Respiratory Insufficiency / Q000628:therapy*
D010100:Oxygen