Insulet Omnipod Dash - Insulin on board (IOB) calculations

Understanding PDM and Pod Function 12
148
12 Understanding PDM and Pod Function
bolus component. Likewise, the IOB from this bolus has a meal IOB and a
correction IOB component.
Insulin on board (IOB) calculations
Duration of Insulin Action – the time since the previous bolus
x previous bolus
Duration of Insulin Action
IOB from a previous correction bolus is called a “correction IOB”.
IOB from a previous meal bolus is called a “m e a l I O B ”.
Correction IOB example
Duration of Insulin Action: 3 hours
Time since previous correction bolus: 1 hour
Previous correction bolus: 3 U
3 hours – 1 hour
x 3 U = 2 U correction IOB
3 hours
In other words, one hour aer your previous correction bolus, your body
has used up only 1 unit from the correction bolus. e remaining 2 units
of insulin are still in your body working to correct your blood glucose level.
Accounting for correction IOB in bolus calculations prevents the delivery of
too much insulin when correcting a high BG or eating a meal.
Meal IOB example
Duration of Insulin Action: 3 hours
Time since previous meal bolus: 2 hours
Previous meal bolus: 4.5 U
3 hours – 2 hours
x 4.5 U = 1.5 U meal IOB
3 hours
In other words, two hours aer your previous meal bolus, your body has used
up 3 units from the meal bolus. e remaining 1.5 units of insulin are still in
your body working to cover your meal.
Meal IOB is only used to reduce a correction bolus; it does not reduce a new
meal bolus. e correction bolus is only reduced until it becomes 0 units.
Effective Date: 27SEP2019, ECO-000240