What is the range of oxygen flow that a nasal cannula can administer?

The range of oxygen flow that a nasal cannula can administer is typically between 1 L/min and 6 L/min. This flow rate is suitable for patients who require low levels of supplemental oxygen and allows for a comfortable delivery of oxygen directly into the nostrils.

At flow rates below 1 L/min, the patients may not receive sufficient oxygen to meet their needs, while flow rates above 6 L/min can lead to discomfort and drying of the nasal mucosa. Additionally, flow rates exceeding 6 L/min may not significantly increase the inspired oxygen concentration due to the anatomical design of the nasal passages and the risk of excessive bubbling and noises that might disrupt the patient's comfort.

Thus, the selected answer accurately reflects the standard range for a nasal cannula, making it essential for managing patients in a variety of clinical situations involving respiratory support.