Which medical gas is frequently used in hospitals to assist patients with airway obstruction?

Helium is frequently used in hospitals to assist patients with airway obstruction due to its unique physical properties. When combined with oxygen, helium creates a gas mixture that has a lower density than room air. This characteristic allows for easier airflow, especially in patients experiencing conditions like asthma or other forms of airway obstruction. The reduced resistance to airflow makes breathing less labored, which is crucial in emergency situations or during exacerbations of respiratory conditions. The ability of helium to facilitate better gas exchange and improve breathing efficiency makes it a valuable option in medical settings, particularly for patients with compromised airway function.

While nitrous oxide is primarily used for its anesthetic and analgesic properties, carbon dioxide is more commonly involved in respiratory function assessment and treatment of certain medical conditions, and argon is not typically utilized in clinical settings related to airway obstruction.