Biomedizinische Technik. Biomedical engineering
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Heliox is a mixture of Oxygen and Helium. The low density of Helium allows this mixture to flow in a laminar pattern where oxygen, nitrogen or air flow would be turbulent. Therefore the force necessary to move a volume of gas (e.g. ⋯ Heliox showed effects on hemodynamic as well as respiratory and subjective variables. These effects can be interpreted as a reduction of the extent of pressure variations in the intrapleural space leading to less impact on hemodynamic variables while breathing Heliox vs. room air in a resistive loading experiment. In the future the combined measurement of hemodynmic variables as well as non-invasive assessment of respiration might shed new light on cardio-respiratory interaction and effects of Heliox during airway obstruction.