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Understanding PDM and Pod Function 12
152
12 Understanding PDM and Pod Function
e calculations for the 50% increase temp basal in the preceding gure are:
Segment
boundaries*
Basal rate of
Basal Program
(U/hr)
50% increase
(U/hr)
Resulting temp
basal rate:
(U/hr)
Midnight–7:00 am 0.20
7:00 am–10:00 am 0.20 0.20 x 50%=0.10 0.20 + 0.10 = 0.30
10:00 am–2:00 pm 0.60 0.60 x 50%=0.30 0.60 + 0.30 = 0.90
2:00 pm–4:30 pm 0.30 0.30 x 50%=0.15 0.30 + 0.15 = 0.45
4:30 pm–midnight 0.30
* Segments are dened by the currently scheduled Basal Program.
Temp basal from 7 AM to 4:30 PM
Basal Program
Actual insulin delivered
12 AM 12 AMNoon
0
0.2
0.4
0.6
0.8
1.0
12 AM
Noon
12 AM
Basal Rate (U/hr)
50% decrease
50% increase
Temp basal set to %
12 AM 12 AMNoon
0
0.2
0.4
0.6
0.8
1.0
12 AM
Noon
12 AM
Basal Rate (U/hr)
set to 0.1 U/hr
set to 0.9 U/hr
Temp basal set to U/hr