Trans-tracheal oxygen.
D006801:Humans; D000860:Hypoxia / Q000628:therapy*; D007442:Intubation, Intratracheal / Q000379:methods*; D008173:Lung Diseases, Obstructive / Q000628:therapy*; D010102:Oxygen Inhalation Therapy / Q000009:adverse effects / Q000379:methods*