heliox
Noun
Meaning
heliox (uncountable)
(medicine, underwater diving) A mixture of helium and oxygen used as a breathing gas.
Examples
;1983: Cave diver Jochen Hasenmayer uses heliox to a depth of 212 meters.
Heliox has a similar viscosity to air but a significantly lower density (0.5 g/l versus 1.25 g/l at STP ).
Heliox is a medical treatment for patients with difficulty breathing.
Heliox generates less airway resistance than air and thereby requires less mechanical energy to ventilate the lungs. citation "Work of Breathing" (WOB) is reduced.
Heliox has been used medically since the early 1930s.
Broadwater, 2012, pp. 156–62 The surface-supplied divers evaluated the use of heliox due to the depth of the wreck.