User's Manual

Understanding and Delivering Bolus Doses
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The settings used to calculate a suggested bolus are:
•target BG
• insulin-to-carbohydrate (IC) ratio
• correction factor (CF)
• duration of insulin action
The inputs used to calculate a suggested bolus are:
• current BG
•carbs entered
• insulin on board (IOB)
A suggested bolus can have a correction bolus only, a meal bolus
only, or both.
Correction bolus: The correction bolus, as the name suggests,
“corrects” for a blood glucose (BG) level above your target BG
level.
Meal bolus: The meal bolus provides insulin for the carbohy-
drates you enter into the System.
Insulin on board (IOB): IOB is the amount of insulin still working
in your body from previous boluses. The amount of time insulin
remains “on board” or “active” depends on what you set for your
duration of insulin action.
For formulas for each element of the suggested bolus calcula-
tion, detailed examples, and additional guidelines of how the
suggested bolus calculator works, see the Appendices.
■ Deliver a Normal Bolus
Deliver a bolus when suggested bolus calculator is On
1. After you check your blood glucose, the PDM displays the
results (Figure 4-1; see the end of Chapter 7, Checking Your
Blood Glucose). Press Next.
The OmniPod System can only subtract insulin on board
from a suggested bolus when the current BG is known.
Figure 4-1