Preoperative administration of helium in respiratory obstruction.
D000402:Airway Obstruction; D004417:Dyspnea / Q000209:etiology*; D006371:Helium / Q000627:therapeutic use*; D006801:Humans; D007830:Larynx; D010243:Paralysis
D006371:Helium
DYSPNEA/etiology and pathogenesis; HELIUM/therapeutic use; LARYNX/paralysis