The most common concentration of heliox is ______________________________.

Name: The most common concentration of heliox is ______________________________.
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The most commonly used concentration of heliox is 80:20 (80% helium and 20% oxygen).This mixture provides the greatest amount of helium,and therefore the lowest density gas,without providing subambient levels of oxygen.Concentrations as low as 50% have been used effectively in patients with large airway obstructions.

The Most Common Concentration of Heliox Is ______________________________