What is Continuous Glucose Monitor?
Glucose Meters play a key role in helping diabetics keep track of their blood sugar levels (BSL), but they may not be practical when patients need to keep a closer eye on their readings. Continuous Glucose Monitors (CGM) fulfill this need seamlessly, taking readings every 10 to 15 minutes.
CGMs use tiny sensors inserted just under your skin to collect readings, These are then sent to a portable wireless monitor via a tiny transmitter on the sensor. The sensors are inserted painlessly just under the skin—usually your tummy—or stuck to the back of your arm, where it’s less likely to be dislodged accidentally.
The data gathered and sent by the sensors allows your doctor to get a more complete picture of the patient’s diabetes, helping detect patterns that can help the doctor modify treatment to better manage the patient’s condition. These devices usually require a prescription from the doctor but have become fairly commonplace in many countries.
How Do Continuous Glucose Monitor work?
The sensors measure the glucose inside your body, sending the information via transmitters to a monitor that is usually clipped to the patient’s belt, rather like a pager.
In the event the patient’s blood sugar drops dangerously level or rises to a predetermined high level, an alarm will sound on the monitor. Earlier editions of the CGM sent readings only to the doctor, but with technology becoming more user-friendly, modern devices allow patients to view the readings.
There are now many apps developed to pair the CGM with smartphones, for better real-time measurement of BSL. The data can also be downloaded onto a computer or connected device. Analyses of the data help the doctor determine the ideal treatment plan, for instance:
- medicine/insulin dosage
- best time for the dose to be administered
- effect of the medication—so your doctor can modify as needed
- exercise routine—what, when, and intensity
- meals and snacks—type, timing, quantity
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