What is the main function of a Nasal Cannula in patient care?

A nasal cannula primarily serves the function of delivering supplemental oxygen to patients who need it due to conditions such as respiratory distress, chronic obstructive pulmonary disease (COPD), or during certain medical procedures. This device consists of two prongs that fit into the nostrils and are connected to a flexible tube that supplies oxygen from a source, allowing for a continuous flow of oxygen to be inhaled directly.

It is designed to provide a non-invasive way to increase the oxygen concentration in the air that the patient breathes, thus helping to improve oxygenation in the bloodstream. Nasal cannulas are commonly used because they are well-tolerated by patients and allow them to speak, eat, and move more freely compared to other methods of oxygen delivery, such as a face mask.

While other options might involve functions that are related to respiratory care, such as aiding in mechanics and providing humidification, the primary role of a nasal cannula is straightforwardly focused on the delivery of oxygen, which supports the body's respiratory needs. Monitoring circulation is typically performed using other equipment like pulse oximeters or blood pressure monitors, not through a nasal cannula.