Category: medical devices

My new Dexcom CGM

I was excited yesterday to get my new Dexcom CGM (continuous glucose monitor). This posting is my review after using it for one day.

I have been using MiniMed insulin pumps for 15+ years. I started using their CGM in February 2010. It seemed logical since their system is integrated, with CGM data transmitted to and displayed on their insulin pump. But my doctor frequently mentioned that many patients liked the Dexcom CGM better.

I finally made the switch yesterday after spending a few weeks getting the requisite insurance approvals. In general, I think the device’s functionality is quite good, but the design could be improved.

First off, the receiver is really big! Previously, my MiniMed insulin pump acted as the CGM receiver. But now I need to carry this large device. It is the same size as my Android Nexus One phone, only twice as thick. Compared to my phone and insulin pump, which perform a lot more functions in a smaller design, you would think Dexcom could produce a smaller device.


The Dexcom Seven+ CGM is on the lower left. Now I have to carry all these devices every day.


My Android phone on the left, the Dexcom CGM on the right.

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25 years and counting…

I remember that June 14, 1986 was a Saturday. At age 12, I went with my mother that day to see my doctor. My health had been deteriorating for weeks. I had no energy, no appetite and an unquenchable thirst.

Several hours and a few lab tests later, I was diagnosed with type-1 diabetes. I had no idea what that meant at the time. But when my mother started crying, I knew this couldn’t be good. By the end of the day I was checked into the hospital, learning how to mix short and long-acting insulins in a syringe, test my own blood sugar and count carbohydrates.

Fast-forward 25 years and I am doing well! A check-up last week showed my HbA1c was a healthy 6.6% (diabetics aim for a reading below 7%). Eye exams have found no sign of diabetic retinopathy. A host of other lab tests consistently come back normal. With stable control, I have traveled the world in recent years for work as a photographer and run two marathons.

NYC Marathon

Mile 8 of the 2005 NYC Marathon (I had my insulin pump attached to my arm)

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