Which statement about Heliox is true?

Heliox is correctly described as a mixture of helium and oxygen. This gas blend is utilized primarily in medical settings to alleviate respiratory distress, particularly in patients with obstructive airway conditions such as asthma or chronic obstructive pulmonary disease (COPD). The lower density of helium allows for easier movement through the airways, which enhances oxygen delivery to the lungs and can help reduce the work of breathing.

The misconception that Heliox consists solely of helium is inaccurate since it includes both helium and oxygen in its composition. Heliox's use is not primarily for sedation; instead, it serves a functional role in improving gas exchange during respiratory treatments. Additionally, while it is beneficial in managing respiratory issues, it is not specifically used for the treatment of pneumonia. Thus, the mixed composition of helium and oxygen is a defining feature of Heliox.