OmniPod UST400, User Manual

Page: 167 / 202

Understanding PDM and Pod Function 12
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12 Understanding PDM and Pod Function
Example 3: Eating, BG at target, 1 U meal IOB
Target BG (target): 5.6 mmol/L
Current BG (current): 5.6 mmol/L
IC Ratio: 1:15
Correction Factor (CF): 2.8
Carb intake: 45 grams carbohydrate (carbs)
Meal IOB: 1 U
Correction IOB: 0 U
Preliminary correction bolus
5.6 mmol/L[current] – 5.6 mmol/L [target] = 0 U preliminary correction bolus
2.8 [CF]
Preliminary meal bolus
45 [carbs] = 3 U
15 [IC Ratio]
Correction bolus
= 0 U preliminary correction - 1 U meal IOB - 0 U correction IOB
= 0 U (because a bolus can never be less than zero)
Meal bolus
= 3 U preliminary meal bolus - 0 U unused correction IOB
= 3 U
Note:
A meal IOB is never subtracted from a meal bolus. It is only subtracted
from a correction bolus.
Suggested bolus dose
= 0 U correction bolus + 3 U meal bolus
= 3 U insulin