Using a nasal cannula involves several steps: 1. Ensure the oxygen source is set up correctly. 2. Connect the tubing of the nasal cannula to the oxygen source. 3. Adjust the flow rate as prescribed by the healthcare provider. 4. Place the prongs into the patient's nostrils and loop the tubing over the ears. 5. Adjust the slider under the chin to ensure a snug fit without causing discomfort.
