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# Medtronic Insulin Pump Settings

## Guidelines For Optimal Bolus Calculator Settings In Adults

Go to: Introduction Bolus calculators (BCs) were introduced to insulin pumps in 2002 as a convenient way to automate bolus insulin dose calculations that better match varied lifestyle. A well-designed BC provides the logic and features to improve the accuracy of carbohydrate (carb) and correction doses and track bolus insulin on board (BOB or IOB or active insulin) to lessen insulin stacking. A BC offers a comprehensive insulin and glucose history that facilitates pattern management, and has some self-correcting capabilities for setting errors when proper BOB logic is used. BCs are becoming available for use with multiple daily injection (MDI) therapy as mobile device applets in cell phones, and in glucose meters where glucose values can be automatically entered into bolus calculations. In an Actual Pump Practices (APP) study, we published data and formulas to derive average optimal BC settings for the carbohydrate factor (CarbF), correction factor (CorrF), and basal doses from the total daily dose (TDD) of insulin.1 Anonymous data from 396 Deltec Cozmo® insulin pumps (Smiths Medical MD, Inc., Saint Paul, MN) used throughout the United States and downloaded during a routine softwa Continue reading >>

1. kgm0612

According to my pump manual, Insulin Sensitivity is the amount your blood sugar level is reduced by one unit of insulin and that this value amount is used to calculate a suggested bolus insulin dose to correct your BS when it's above the target range.
I started on the MM-515 in mid-December with an insulin sensitivity setting of 133, set by my endo & pump trainer. After chatting with several pump users and asking what their level was set at, over the last several months I have lowered my level down to 45.
I guess what I'm trying to get to is this..........when I correct because my BS is above my target range, then my BS should be dropping 45 points for every unit I give myself to correct? This certainly wasn't happening when it was set at 133, or 90, or 75.
If someone could help me out and explain this all to me, I'd appreciate it!
Karen

2. Funnygrl

If your ISF really is 45, then yes, bs should drop 45 for every unit. I'm kinda surprised they didn't work with you to figure this out before starting pump, at least roughly, and explain it better.
So if your ISF was 45 and your target bs was 100, to correct a 190 you would take two units because:
(current-target)/ISF= correction
so:
190-100=90/45=2

3. spike

kgm0612 said:

According to my pump manual, Insulin Sensitivity is the amount your blood sugar level is reduced by one unit of insulin and that this value amount is used to calculate a suggested bolus insulin dose to correct your BS when it's above the target range.
I started on the MM-515 in mid-December with an insulin sensitivity setting of 133, set by my endo & pump trainer. After chatting with several pump users and asking what their level was set at, over the last several months I have lowered my level down to 45.
I guess what I'm trying to get to is this..........when I correct because my BS is above my target range, then my BS should be dropping 45 points for every unit I give myself to correct? This certainly wasn't happening when it was set at 133, or 90, or 75.
If someone could help me out and explain this all to me, I'd appreciate it!
Karen
Wow! 133??? My number is between 22 and 38. 22 in the pre dawn hours, and closer to 38 during the day. Don't forget you have to wait the full 3.5-5 hours for your bg to drop the full amount. don't expect it to drop by your ISF within a hour or two...