We had great luck with the latest generation of Medtronic pumps (the 700 range).
It used to be that they (older models) were off by huge margins, and the auto modes had to be constantly calibrated against as it was often not only off, but suggesting/dosing dangerous amount in either direction.
Nowadays, SO calibrates a few times a week and the pump is extremely reliable. Longer periods of highs are usually due to infusion set leaking (eg. line snagged and pulled the needle).
Like the other reply, it takes a day or two until the system is reliable.
Sensor on back of the arm, infusion on stomach is the combo we've found to be the most safe and reliable sites. Make sure you rotate as often as possible and avoid putting them in the exact same spot.
It used to be that they (older models) were off by huge margins, and the auto modes had to be constantly calibrated against as it was often not only off, but suggesting/dosing dangerous amount in either direction.
Nowadays, SO calibrates a few times a week and the pump is extremely reliable. Longer periods of highs are usually due to infusion set leaking (eg. line snagged and pulled the needle).
Like the other reply, it takes a day or two until the system is reliable.
Sensor on back of the arm, infusion on stomach is the combo we've found to be the most safe and reliable sites. Make sure you rotate as often as possible and avoid putting them in the exact same spot.