Which of these devices is typically used for measuring blood glucose levels?

The glucose meter is specifically designed to measure the concentration of glucose in the blood, making it the appropriate choice for monitoring blood glucose levels. This device typically requires a small sample of blood, usually obtained through a fingerstick, and provides a rapid reading of glucose levels, which is essential for individuals managing diabetes and other related conditions.

In contrast, the other devices serve different purposes: an ECG monitor tracks the electrical activity of the heart, a sphygmomanometer measures blood pressure, and a pulse oximeter assesses oxygen saturation in the blood. Each of these devices has its own distinct function, emphasizing the specialized role of the glucose meter in diabetic care and management.