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helium

 (He) [he´le-um]
a chemical element, atomic number 2, atomic weight 4.003. (See Appendix 6.) Helium is a chemically inert element that is odorless, tasteless, and noncombustible. Because of its low density it is easily moved through the air passages and therefore requires little effort in breathing on the part of the patient in respiratory distress. Although helium itself has no chemical therapeutic value, when combined with oxygen it facilitates delivery of oxygen to the lungs (see helium-oxygen therapy). It should be noted that helium causes the voice to be high-pitched and the spoken word difficult to understand. This should be explained to the patient with the assurance that the effect is harmless and temporary.
helium-oxygen therapy the administration of a mixture of helium and oxygen (commonly 80 per cent He and 20 per cent O2, or 70 per cent He and 30 per cent O2); used in the management of airway obstruction associated with bronchospasm or bronchial asthma. The He-O2 mixture is about one third the density of air. This reduces turbulent flow and the patient effort required for ventilation.

He

Symbol for helium, a preceding superscript number indicates an isotope.

He

helium.

He

symbol for the element helium.

HE

abbreviation for hepatitis E.

HE

Abbreviation for:
haemangioendthelioma
haematoxylin and eosin
haemorrhagic enteritis
health economy 
health education 
Hektoen enteric Microbiology
hepatic encephalopathy
hepatitis E
hereditary elliptocytosis
herpetic encephalopathy
high efficiency
high endothelial
higher education 
holoenzyme
hypereosinophilia
hyperextension
hypertensive encephalopathy

HE

1. Hemoglobin electrophoresis, see there.
3. Human enteric.

He

Symbol for helium

He

Symbol for helium.

He

chemical symbol, helium.
References in periodicals archive ?
The good news is President Bush has resolved to stop taunting the world at large with his tough-guy, he-man posturing.
Imagine the surprise of her he-man "Sentinel" co-stars, Michael Douglas and Kiefer Sutherland, the day the movie's ex-Secret Service adviser took the three of them to a gun range for some training.
In addition to Postman Pat, Entertainment Rights has a portfolio of children's characters that includes He-Man, She-Ra, Basil Brush and The Tweenies.
In addition to Postman Pat, Entertainment has a portfolio of children's characters that includes He-Man, She-Ra, Basil Brush and The Tweenies.
Entertainment Rights, which also owns Basil Brush and He-Man, said the BBC had commissioned a third series.
The Teenage Mutant Ninja Turtles, My Little Pony, Care Bears, He-Man and Polly Pocket, all feature in the top 50.
Yet there was something oddly familiar about this year's offerings: Hasbro trotted out a Godzilla-sized Tonka Truck; Mattel reintroduced Hot Wheels cars; and the Cartoon Network touted its $20-million resurrection of the '80s cartoon smash "He-Man and the Masters of the Universe," along with 25 new He-Man toys aimed to coincide with the cartoon's comeback.
No Chippendales this time around, but the beefcake quotient was more than taken care of by regular battles fought by He-Man at Mattel.
But as we know by now, his part in The Producers is hardly a he-man.
Director Gary Marshall, asked the he-man to reveal all after he saw that Julia was flagging during a scene.