NREMT Paramedic Practice 2025 – Comprehensive All-in-One Guide to Exam Success!

The nasal cannula is a commonly used device for delivering supplemental oxygen to patients, primarily because it is well-tolerated and allows for relatively high mobility compared to other oxygen delivery methods. The correct flow rate of 1 to 6 liters per minute provides an oxygen concentration of approximately 24% to 44%.

This range is established due to the way oxygen is delivered through the cannula. At lower flow rates, the oxygen provided is mixed with room air, resulting in lower concentrations, while higher flow rates allow for more oxygen to be delivered, but the concentration remains less than that of devices like non-rebreather masks. This makes the nasal cannula particularly useful for patients who require modest oxygen support, as it offers a comfortable way to increase their oxygen levels without significant intervention or discomfort.

Understanding these parameters is essential for EMTs and paramedics as it helps them select the appropriate oxygen delivery device based on the patient's needs, ensuring safe and effective treatment.