What is a nasal cannula primarily used for?

A nasal cannula is primarily used to supply supplemental oxygen through the nostrils to patients who require additional oxygen due to various medical conditions, such as respiratory distress or hypoxemia. It consists of flexible tubing that is connected to an oxygen source and is designed to deliver a low to moderate concentration of oxygen, which can be beneficial for patients who are alert and able to breathe adequately on their own.

The design of the nasal cannula allows for comfortable and continuous oxygen delivery while still permitting the patient to talk, eat, and move, thereby enhancing their mobility and maintaining a higher quality of care. The effectiveness of this device makes it a standard piece of equipment in emergency medical services as well as in hospital settings, catering to patients ranging from those in acute distress to those requiring ongoing supplemental oxygen.

Other options may talk about different medical devices or methods that serve various purposes, but these do not align with the primary function of a nasal cannula, which is distinct in its role of providing oxygen therapy specifically through the nasal passage.