Well sorry, I have got confused now. I don't need a calculator to calculate 1u:6g but what I rely on (and I suppose have got lazy about) is the fact that pumpy (through the handset) calculates for me any IOB and takes into account current BG and factors in any corrections and adds/subtracts from my dose. That I cannot do in my head! So does the Medtronic pump do that for you Mike?
Yes of course! All that is on the pump with the bolus wizard, but not on the comparatively meagre BG meter remote bolus facility. Which is what I was trying to explain (apparently in a very confusing way!!). The bolus wizard is fully functioning and very configurable on both Roche and Medtronic pumps. There are a handful of differences in terminology etc but they work very similarly. The main difference is that Roche allow you to do that ALL on the handset if you want to, whereas for Medtronic the remote bolus is more 'special occasion' and you primarily use the pump itself.
If you had to move from Roche to Medtronic, Patti, the biggest differences you'd need to get used to (as far as wizards are concerned) would be the following I would think:
1. Roche wizard allows you to set a range and aims to get you to the midpoint of what you set by adding or removing insulin according to BG. Medtronic wizards do exactly the same except that they would correct up the the bottom number of the range and down to the top number of the range. You can use this to advantage if you are cautious about corrections by setting a narrow range (say 5.5 to 7.0) and let the pump allow you to run at the edges of that rather than risking overshooting in either direction. Personally though I just prefer the Roche way so I set a single midpoint target (eg 6.0-6.0) and allow corrections to draw me towards that. You can have different target ranges for different times of day, of course.
2. Assuming the Roche bolus wizard is still like it was on the Expert... Medtronic don't have 'health event' modifiers for boluses. That thing where you can apply 'illness' or 'exercise' to a bolus to increase or decrease it by a percentage. I always found it handy on the Expert, but it's not on Medtronic. You can have as many bolus ratios though the day as you like, of course, but there's no way of automatically doing that handy 20% reduction in meal bolus because you are off out for a long walk in the afternoon (or whatever).
3. The way 'active insulin' is displayed is different. The way the calculation works is very similar, but the way the numbers are display is different. Roche only tracks/displays active *correction* (at least it did on the Expert), but the Medtronic tracks the full dose. Both wizards ignore insulin previously set against carbs when calculating future boluses, so there's no real difference in practical terms, but you'd need to get used to 'active insulin' looking like a much higher number after meals.