What is a nasal cannula?

• A. A device that fits over the mouth
• B. A device that consists of plastic tubing for oxygen delivery
• C. A type of oxygen flow meter
• D. A device used for humidifying oxygen

Answer: (B)

A nasal cannula is a medical device specifically designed to deliver supplemental oxygen to individuals who require it, often in lower flow rates. It consists of a tube that is inserted into the nostrils and is usually made of lightweight plastic. The tubing connects to an oxygen supply source, allowing for efficient oxygen delivery directly into the nasal passages, which helps increase the amount of oxygen a person breathes in without the need for a mask that covers the mouth and nose.

This design makes it particularly useful for people in need of oxygen therapy due to respiratory conditions, as it is comfortable and allows for a greater range of movement compared to other oxygen delivery devices. The nasal cannula provides a continuous, steady flow of oxygen, improving the patient’s ability to maintain adequate levels of oxygen saturation in their blood.