Element
helium Audio
he·li·um [ hee-lee-uhm ]
Effect:
Decreased Metabolic Rate
May Prevent:
Decompression Sickness; High Pressure Neurological Syndrome
May Treat:
Positive-Pressure Respiration, Intrinsic
More Information:
ChemID; DrugBank; DailyMed; PDR
Definitions related to helium:
  • A gaseous element with atomic symbol He, atomic number 2, and atomic weight 4.00.
    NCI
    U.S. National Cancer Institute, 2021
  • A noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003. It is a colorless, odorless, tasteless gas that is not combustible and does not support combustion. It was first detected in the sun and is now obtained from natural gas. Medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.
    NLM Medical Subject Headings
    U.S. National Library of Medicine, 2025
  • Noble gas with the atomic symbol He, atomic number 2, and atomic weight 4.003; a colorless, odorless, tasteless gas that is not combustible and does not support combustion; medically it is used as a diluent for other gases, being especially useful with oxygen in the treatment of certain cases of respiratory obstruction, and as a vehicle for general anesthetics.
    CRISP Thesaurus
    National Institutes of Health, 2006
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