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Understanding PDM and Pod Function 1212 Understanding PDM and Pod Function
Bolus Calculator examples
For an explanation of IOB, see page 147. For an explanation of the correction and
meal bolus equations, see page 149.
Example 1: Eating 45 g carbs, BG of 8.4 mmol/L is above target, no IOB
Duration of Insulin Action = 4 hours. You have not delivered a bolus in the last
4 hours, so there is no IOB (no meal IOB, no correction IOB).
Correction Bolus
1 U
Your blood glucose is 2.8
mmol/L over your target. With
your correction factor at 2.8 and
no IOB adjustment, you will need
a 1 U correction bolus.
BG = 8.4, Target BG = 5.6
Correction Factor = 2.8
(8.4-5.6) /2.8 = 1 U
Meal IOB adjustment
Meal IOB = 0 U
1 U - 0 U = 1 U
No IOB, so no IOB adjustment.
Correction IOB adjustment
Correction IOB = 0 U
1 U - 0 U = 1 U
No IOB, so no IOB adjustment.
Meal Bolus
3 U
You are eating 45 g carbs. With
your IC ratio at 15 and no IOB
adjustment, you will need a 3 U
meal bolus.
Carbs = 45 g, IC Ratio = 15 g/U
45 / 15 = 3 U
Correction IOB adjustment
Remaining correction IOB = 0 U
3 U - 0 U = 3 U
No IOB, so no IOB adjustment.
Calculated Bolus
4 U
The calculated bolus is the sum
of your correction bolus and
meal bolus.
Your Adjustment
0 U
Any adjustment you make to the
calculated bolus is shown here.
No adjustment was made.
Total Bolus
4 U
The total bolus is the sum of
the calculated bolus and any
adjustment made by you.
Effective Date: 27SEP2019, ECO-000240
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