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Understanding PDM and Pod Function 12
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12 Understanding PDM and Pod Function
The Bolus Calculator
e PDM's Bolus Calculator can do a lot of the work of calculating a bolus for you.
e Bolus Calculator uses your personal settings and also takes into account any
insulin that remains from recent boluses (referred to as insulin on board or IOB).
Bolus Calculator boluses
When calculating a bolus, the Bolus Calculator considers a bolus to be made up of
the following two components:
• Correction bolus: Used to lower blood glucose when it gets too high.
• Meal bolus: Used to cover carbs in a meal.
Extended boluses
When using the Bolus Calculator, you can extend some or all of a meal bolus, but
a correction bolus cannot be extended. A correction bolus is always delivered rst.
In the following example, three units of insulin are extended:
Total bolus = 5 units (1 unit correction bolus + 4 units meal bolus)
Deliver now = 2 units (1 unit correction + 1 unit meal bolus)
Extend = 3 units (3 units meal bolus)
Maximum Bolus
e PDM does not allow you to enter a bolus that is above your Maximum
Bolus setting. If the Bolus Calculator calculates a bolus amount greater than
your Maximum Bolus, you will only be able to deliver up to the Maximum Bolus
amount. To adjust it, tap the Total Bolus eld and enter a revised bolus.
Controlling the bolus amount
e Bolus Calculator is a useful tool, but you have the ultimate control over the
amount of a bolus to be delivered. Aer the Bolus Calculator suggests a bolus
amount, you can conrm the suggested bolus or increase or decrease it.