The continuous glucose sensor is a small monitor that measures and stores information about a child’s blood sugar levels over a period of time, up to 1 week. It gives real-time information about the child’s blood glucose levels, including trends and fluctuations that signal when blood sugar levels will become hyperglycemic (HI-per-gly-seem-ick) or too high, or hypoglycemic (HI-po-gly-seem-ick) or too low.
The sensor is injected under the surface of the skin with a needle using an insertion applicator. The needle then is removed and the sensor stays in place. When the sensor is inserted, your child will feel a fast, sharp prick. A small recorder that looks like a flat, plastic disk a little larger than a quarter is attached to the sensor and worn with it for the length of the test period. The recorder lies flat against the skin and can be worn under clothing without being seen. Your child can return to normal activities right away, and can swim, bath, shower, and exercise while wearing it.
Your child should continue to take blood sugar readings as usual and record daily events, such as meals, insulin, and exercise in the log book. While the continuous glucose sensor is in place, it will automatically measure and record your child’s glucose measurements.
When the testing period is over, you may remove the sensor by pulling it out and taking off the recording disk. The recording disk and the log book must be mailed back to the clinic in the padded envelope that was provided to you. The sensor and needle can be thrown away in an approved sharps container.
When the recorder is received at the hospital, the data will be downloaded into a computer and your log book will be matched with the information to create a personalized report. At your child’s next clinic appointment, you and your child will be able to see on a graph what his or her glucose levels were in relationship to time of day, activity, and meals. The report will help your child answer questions, such as:
- Does my level go down during the night?
- How did that pizza I ate affect my glucose level?
- Do I have highs and lows throughout the day that I’m not even aware of?
- How well is my therapy working?
This information will help you and your child have more control over his or her glucose levels and lower A1C levels. Lower A1C levels have been shown to reduce the risk of complications such as eye, kidney, nerve, and heart disease, and can lead to a longer, healthier life.