TABLE 1

A1C Levels and Insulin Doses at the End of Each Trimester of Pregnancy

Parameters1st Trimester (Weeks 1–12)2nd Trimester (Weeks 13–26)3rd Trimester (Weeks 27–40)
A1C, % 5.7 5.7 5.5 
Insulin-to-carbohydrate ratio 1 unit to 13–14 g 1 unit to 10–12 g 1 unit to 8 g 
Insulin sensitivity factor 1 unit to 75–80 mg/dL 1 unit to 65–85 mg/dL 1 unit to 45–65 mg/dL 
Total daily bolus insulin, units/day 8.5 11.3 15.5 
Total daily basal insulin, units/day (%) 17 (67) 21 (65) 32 (67) 
Total daily insulin, units/day 25.5 32.3 47.5 
Parameters1st Trimester (Weeks 1–12)2nd Trimester (Weeks 13–26)3rd Trimester (Weeks 27–40)
A1C, % 5.7 5.7 5.5 
Insulin-to-carbohydrate ratio 1 unit to 13–14 g 1 unit to 10–12 g 1 unit to 8 g 
Insulin sensitivity factor 1 unit to 75–80 mg/dL 1 unit to 65–85 mg/dL 1 unit to 45–65 mg/dL 
Total daily bolus insulin, units/day 8.5 11.3 15.5 
Total daily basal insulin, units/day (%) 17 (67) 21 (65) 32 (67) 
Total daily insulin, units/day 25.5 32.3 47.5 
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