What is the most common method of oxygen administration?

The nasal cannula is recognized as the most common method of oxygen administration, particularly in prehospital settings and for patients who require supplemental oxygen but may not need more invasive support. It delivers oxygen directly to the patient's nostrils through two prongs, allowing them to breathe normally, eat, and speak while receiving oxygen therapy.

This method is generally well-tolerated and suitable for patients who have mild to moderate respiratory distress. The nasal cannula is beneficial in maintaining a degree of comfort for the patient, as it does not obstruct their mouth or face, which can be particularly important in emergency situations where a patient's comfort is a priority.

Compared to other methods, such as mask ventilation or bag-valve-mask techniques—both of which are more invasive and used primarily in cases of severe respiratory distress or ineffective breathing—the nasal cannula provides a less intrusive option for oxygen delivery. Endotracheal intubation, while effective for securing an airway, is intended for more critical situations and involves a higher level of skill and risk. Thus, the nasal cannula stands out as the most frequently utilized method for delivering supplemental oxygen in various healthcare settings, especially in less severe cases where patients can still maintain an effective airway.