A nurse is caring for a child that is receiving oxygen therapy and is on a continuous oxygen saturation monitor that is reading 89%. Which of the following actions should the nurse take first?

A. Encourage the child to take deep breaths: While deep breaths may help improve oxygenation, the first action should be confirming that the monitoring device is correctly placed and providing accurate readings. B. Ensure proper placement of the sensor probe: Incorrect placement of the sensor probe (e.g., on a fingernail or a cold extremity) can lead to inaccurate oxygen saturation readings. Ensuring proper placement is the priority to verify the accuracy of the reading. C. Place the child in the Fowler's position: Fowler's position can help with breathing, but before making this change, the nurse should first verify that the pulse oximeter is working correctly. D. Increase the oxygen flow rate: Increasing the oxygen flow rate may be necessary if the child’s oxygen saturation remains low, but the first step is to ensure the monitoring device is accurate.