Users Manual Part 6

268
18 Understanding SmartBolus Calculator Calculations
Example 3
No carbs entered, used CGM of 180 mg/dL with decreasing trend. ere is 0.8
U meal IOB and 0.5 U correction IOB from the previous meal and correction
boluses.
Correction Bolus
0 U
Your glucose is 180 mg/dL, which
is 50 mg/dL over target. Because
your correction factor is 50, the initial
correction bolus is 1 U.
CGM = 180,
Target Glucose = 130
Correction Factor = 50
(180 -130) / 50 = 1 U
Meal IOB adjustment
Meal IOB = 0.8 U
1 U - 0.8 U = 0.2 U
Since you have 0.8 U of meal IOB
remaining from a previous meal
bolus, this is subtracted from the
initial correction bolus of 1 U, and
you have 0.2 U of correction bolus
remaining.
You also have 0.5 U of correction IOB
from previous insulin action. This
is subtracted from the remaining
correction bolus of 0.2 U, driving the
nal calculated correction bolus to
0 U. Note that 0.3 U of correction IOB
still remains after driving correction
bolus to 0 U, and this is used in the
meal bolus calculations.
Correction IOB adjustment
Correction IOB = 0.5 U
0.2 U - 0.5 U < = 0 U
Meal Bolus
0 U
You did not enter any carbs, so you
do not receive any calculated meal
bolus dose.
Carbs = 0 g, IC Ratio = 10 g/U
0/10 = 0 U
Correction IOB adjustment
Remaining correction
IOB = 0.3 U
0 U - 0.3 U < = 0 U
Although there is a remaining
correction IOB of 0.3 U, your initial
meal bolus is already at 0 U, so it is
not adjusted further, and your meal
bolus remains at 0 U.
Calculated Bolus
0 U
Even though your glucose is above
target, you have enough IOB. As a
result, the SmartBolus Calculator
recommends that you do not deliver
any additional insulin.
Total Bolus
0 U