need help understanding corrections

[cdpm]

i have read books and articles online
but i still have trouble grasping how to
calculate a 2 hour post meal correction

i understand it must take into account
remaining insulin used at the meal as rapid has a 4 hour
working time so a correction should only be half
at the 2 hour time

but since my tdd (total daily dose) is different daily
how do i calculate my cf (correction factor)
or did i misunderstand that? i also use lantus as basal
which stays the same but the bolus is always different

how is it done?

 

[GrantGam]

i have read books and articles online
but i still have trouble grasping how to
calculate a 2 hour post meal correction

i understand it must take into account
remaining insulin used at the meal as rapid has a 4 hour
working time so a correction should only be half
at the 2 hour time

but since my tdd (total daily dose) is different daily
how do i calculate my cf (correction factor)
or did i misunderstand that? i also use lantus as basal
which stays the same but the bolus is always different

how is it done?

You shouldn't be correcting your BG 2 hours post prandial. Given that the DIA of bolus insulin is somewhere between 3-5 hours, then the insulin is still working and yet to reduce your BG further.

If you're finding that your BG is too high at the 2 hour mark, then try reducing your quantity of carbs, the glycemic index/load or take your bolus insulin earlier. A lot of us find great results by injecting anywhere up to half an hour before actually starting the meal. I'm saying all of this assuming that your BG is actually in range pre-prandial and that your basal rate is correctly set?

One way to work out an estimated correction factor is 94/(total daily bolus dose). This is only an estimate though and may or may not get you anywhere near your actual correction factor.

The best way to calculate your correction factor is really just through a combination of trial and error and good record keeping.

 

[Mep]

I don't give myself correction doses very often and if I do I keep the dosage small. I tend to do what @GrantGam suggested... it's better to reduce your carbs if you're having high readings at the post prandial 2 hour mark.