For the first 2 weeks on auto my readings averaged around 150 but after talking to our Medtronic reps I shortened the active insulin time and changed my carb ratio to more insulin for less carbs. Those two changes really did the trick.
Basically the pump gives you a “super bolus”. In
Manual mode a bolus is given on top of the basal. In Auto, the pump gives you a bolus and waits some time after your bolus to resume basal. By shortening the active insulin time it resumes the basal faster and by lower the carbs to insulin ratio it gives more insulin up front which is how we were directed to do the super bolus in some of my many diabetes and intensive insulin therapy classes.
My average is now about 130 and that’s with the ever present “change infusion set” spikes that have plagued me for years. I’m thinking I might get that a bit lower in the next few weeks but if not, I’m just thrilled by not having all the lows.
Even in manual mode, the new sensors beat out all the previous Medtronic sensors for accuracy so even if you didn’t use Auto this is a better pump.
But if you swim, motorcycle, do long distance driving and can’t constantly look at your pump and CGM, this is a game changer. I think you have to give it a month to prove itself and maybe that’s too short.
In short you can adjust it to make sure your average bg is a whole lot lower than 180.