title: Helium-oxygen in treatment of upper airway obstruction.
mesh_terms: D000402:Airway Obstruction / Q000628:therapy*; D000818:Animals; D002245:Carbon Dioxide / Q000097:blood; D004285:Dogs; D005260:Female; D006371:Helium / Q000627:therapeutic use*; D006801:Humans; D008875:Middle Aged; D010100:Oxygen / Q000097:blood / Q000627:therapeutic use*; D012138:Respiratory Therapy
chemical_list: D002245:Carbon Dioxide; D006371:Helium; D010100:Oxygen