Which equipment is required for the administration of heliox therapy?

Heliox therapy involves the use of a helium-oxygen mixture to provide relief for patients with obstructive airway diseases. The specific requirement for equipment falls on the ability to deliver the gas mixture effectively. A non-rebreathing mask is particularly suitable for this purpose as it can deliver a high concentration of the heliox mixture while minimizing the risk of room air dilution.

The design of a non-rebreathing mask allows for the patient to inhale primarily the medication without exhaling into the reservoir bag, which helps maintain a consistent flow of the heliox mixture. This is critical in conditions where airflow resistance is increased, as the lighter molecular weight of helium improves ventilation and reduces the work of breathing.

The other equipment options, while important in various contexts, do not specifically address the requirements of heliox therapy delivery. An air flow meter measures flow rates rather than administering the mixture directly; an air/oxygen blender is not applicable since heliox consists of helium and oxygen, not air; and a face tent is less effective for precise gas delivery due to potential dilution with ambient air. Thus, using a non-rebreathing mask is the most effective and appropriate method for heliox administration.