helium therapy

he·li·um ther·a·py

(hē'lē-ŭm thār'ă-pē)
The use of a helium-gas mixture (usually helium and oxygen) in the management of obstruction of the airways; the density of helium is much lower than that of either air or oxygen; as a result, the gaseous mixture will move past an airway obstruction more easily.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012