I am starting on an Eversense CGM today and will post occasional observations about this exciting new experience. The 90 day sensor was “implanted” yesterday. The first thing I learned is there is an initial 24 hour warmup, followed by a 6+ hour calibration (4 BG readings 2+ hours apart) in order to start using the CGM. Right now I am 1 hour into the calibrations.
An Eversense sales rep and trainer were present and seemed very knowledgeable. I have no hesitancy giving the whole insertion process a positive review. The only downside was the time commitment to go to the endo office (and pay) for the insertion.
Implanting the sensor (the Eversense people call it “insertion”) was a painless procedure involving an endo numbing my upper arm, making a smallish incision with a scalpel, and using a special tool to insert the sensor into my flesh through the incision. It was entirely painless and was patched up with Steri strips and Tegaderm. Unfortunately I am not a contortionist so was unable to get a photo of the bloody incision, etc. Here is the patched up arm about 6 hours later. After noticing the bleeding I added a large bandaid over the Tegaderm and played hockey for 2 hours last night, with no pain or issues.
Here is a picture of the transmitter installed over the implanted sensor. The signal is fine even with the extra gauze covering the sensor (Bandaid plus Tegaderm). The transmitter needs to be charged for roughly 15 minutes once daily, followed by carefully aligning it over the sensor using special Eversense double sided tape patches. The tape only needs to last 24 hours, and seems fine so far. I added a Grif Grip for peace of mind.
After inserting the sensor, starting up the CGM requires about 1 1/2 days before you can use it as a CGM. Not a problem for me but still was a bit of a surprise.
The transmitter is larger than a Dexcom G5 but more rounded off around the edges. Mine was placed on the backside of my upper arm and I doubt the size will bother me with it back there. However, I have to use a mirror for alignment, installing Grif Grip, etc. Alignment is aided by the app (which reports signal strength as you fine tune your placement before taping it down) but is sensitive enough where I would not want to try to rush it.
The transmitter must be turned on to adjust the settings on the app. There are multiple settings available for alerts, etc. Notably, you will set your twice daily calibration times. (example 7 AM and 8PM). My understanding is the calibrations must occur within a window of the preset scheduled calibration time or …(? I can’t remember what they told me will happen if you miss a calibration window). It’s almost guaranteed that I will miss a calibration sooner or later, so I hope this will not be a major deal.
My overall impression is that I will need to relearn some of the habits I developed as a long time Dexcom G5 user. I was almost going on autopilot for the Dexcom insertion, taping, initial calibrations, Etc. These steps are all new and different for Eversense.