I am part of this trial
Medtronic 780g with Guardian 3 Sensor.
The Sensor has a few alarms (curse you alarms!!!). It has an alarm for when my blood sugar is dropping low, it recommends a finger stick test to make sure you have a correct reading. There's an alarm for if my blood sugar is going too high (mine is set at 14mmol). It will alarm if the sensor and insulin pump has lost connection with each other.
I can only account for my experience of using this setup but essentially I am in something called "auto mode" which I believe is a Medtronic term. My basal rate is worked out automatically every 5 minutes by my insulin pump based on the readings that my Guardian 3 sensor is sending to it. Anything food-wise that I eat I have to input the carbs myself. If I have miscalculated the amount of insulin needed and I start drifting high the pump will recognize that I don't have enough insulin on board to keep me within target range and will give me more insulin to bring me back down into range. That's also the same if it thinks I have too much on board/I'm starting to go low it will cut off the insulin. I have to calibrate the sensor every 12 hours and can calibrate it any other time I feel I need to.
I will admit to the fact I was a terrible Diabetic beforehand and was high more times than I wasn't. I started this trial in December 2021 with a HbA1c of 78. In February I was re-tested and it had gone down to 42.
I have regular updates with the nurse at the hospital in regards to how I'm feeling, is this benefiting me, any changes that can be made etc.
Below is a Snapshot of my blood sugar average over a 1 month period (black dotted line). I'm in range roughly 70% of the time, given that I was in range less than 10% of the time before the trial I take that as a massive win and it is absolutely a game-changer for me
Please feel free to ask me any other questions you have.