What should be checked if the patient's pulse oximeter reading is low?

If a patient's pulse oximeter reading is low, it is essential to ensure that the sensor is positioned correctly to obtain an accurate reading. One action to consider is switching the pulse oximeter to another site, such as the other hand. This can help improve the accuracy of the measurement, especially if the initial reading was affected by factors such as poor circulation, nail polish, or skin tone, which might interfere with the sensor's ability to detect oxygen levels effectively.

In this context, while ensuring the patient is in the correct position is also vital for accurate readings, repositioning the probe itself, such as moving it to the other hand, can directly enhance the sensor's performance. This method allows for reevaluation of the oxygen saturation levels in a different, potentially more optimal location. Checking the battery or assessing pain may be useful in a broader assessment of the patient's condition but are not immediate actions specifically targeting the low reading from the pulse oximeter.