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Because airway resistance is dictated by the diameter of the airways and by the density of the inspired gas, the low density of heliox reduces airway resistance, and makes it easier to ventilage the lungs.
Additional recommended knowledge
Because of the fourth power in the denominator, resistance increases rapidly as diameter decreases.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Airway_resistance". A list of authors is available in Wikipedia.|