What is the role of continuous glucose monitors (CGMs) in the treatment of type 1 diabetes mellitus (DM)?

Updated: Dec 01, 2020
  • Author: Romesh Khardori, MD, PhD, FACP; Chief Editor: George T Griffing, MD  more...
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Answer

Continuous glucose monitors (CGMs) contain transcutaneous or subcutaneous sensors—depending on whether the devices are externally worn or fully implantable, respectively—that measure interstitial glucose levels every 1-5 minutes, providing alarms when glucose levels are too high or too low or are rapidly rising or falling. [100] CGMs transmit to a receiver, which either is a pagerlike device or is integral to an insulin pump. Looking at the continuous glucose graph and responding to the alarms can help patients avoid serious hyperglycemia or hypoglycemia.


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