What device is used to regulate the rate of oxygen delivery in liters per minute?

• A. Oxygen Concentrator
• B. Flow Meter
• C. Humidifier
• D. Reservoir Bag

Answer: (B)

The device specifically designed to regulate the rate of oxygen delivery in liters per minute is a flow meter. A flow meter allows healthcare providers to set and adjust the precise amount of oxygen being delivered to a patient, ensuring it meets their specific therapeutic needs. This control is vital, especially in clinical settings where oxygen therapy is administered.

The flow meter measures the flow of oxygen, which is usually expressed in liters per minute (L/min), allowing for accurate delivery according to the physician's prescription or the patient's requirements. It typically features a dial or indicator that clearly shows the flow rate, making it straightforward for healthcare professionals to monitor and adjust as needed.

In contrast, other devices mentioned serve different purposes: an oxygen concentrator generates oxygen by removing nitrogen from the air but does not directly measure flow; a humidifier adds moisture to the oxygen supply but also does not control flow; and a reservoir bag is used in certain oxygen delivery systems to store oxygen but does not regulate the flow itself.