So, I just wasted a sensor because my tandem pump let me start a new sensor but then almost immediately cancelled the session because my transmitter battery was too low.
I always used to start my G6 sessions from my iPhone and, if my transmitter was near the end of its life, the Dexcom app wouldn’t let me start the process of starting a new sensor without pairing the new transmitter first. I stopped using my iPhone to start sensor sessions because more than half my sessions turned “manual” (i.e. calibration-required) even though I had entered the code using the “take photo” function.
Since switching to starting my sessions from my Tandem pump, I haven’t had any “manual” sessions, but today I had this new problem.
What happened was my sensor session ended so I started a new session by manually entering the code for a new sensor on my pump. Then I inserted the sensor, snapped in the transmitter and pressed start sensor and the pump showed the little green warm up pie. A couple minutes later, it said I had to replace the transmitter…effectively ruining that sensor.
I know that it’s possible to get a transmitter out using a blood glucose strip without pulling the sensor out but I didn’t manage it so I just pulled out the sensor and started with a whole new sensor and the new transmitter.
My questions are:
Is this a difference between the Dexcom iPhone app and the Tandem pump interface? I.e. does the Tandem pump interface not have the feature that stops you from initiating a new sensor until you’ve replaced the transmitter when it needs replacing?
Is it the iPhone “take a photo” feature that messes things up in terms of manual sessions and I wouldn’t have had this problem if I’d continued to use my iPhone but just entered codes manually? That is, was I throwing out the baby with the bathwater by not just stopping using the “take photo” feature but switching away from starting sessions from the phone entirely?
There are some more details to this story which I could add if this all seems inexplicable to people, but I feel like this post is already pretty long…