Insulin Pump Management in Pregnancy

Introduction to Pregnancy-Specific Targets

The American Diabetes Association recommends stricter glucose targets during pregnancy, with fasting glucose targets of 70-95 mg/dL, 1-hour postprandial targets of 110-140 mg/dL, and 2-hour postprandial targets of 100-120 mg/dL, to optimize maternal and fetal outcomes 1, 2, 3

Pregnancy requires significantly lower glucose targets than non-pregnant states because even mild hyperglycemia increases risks of macrosomia, neonatal hypoglycemia, and birth complications, with the American College of Obstetricians and Gynecologists emphasizing the importance of tight glycemic control 1, 4

The Endocrine Society recommends fasting glucose targets of 70-95 mg/dL, 1-hour postprandial targets of 110-140 mg/dL, and 2-hour postprandial targets of 100-120 mg/dL, which are substantially lower than standard diabetes management targets 1, 2, 3

The American Diabetes Association suggests that basal rates may need to be decreased by 10-30% in early pregnancy due to enhanced insulin sensitivity, and increased by 5% weekly in mid-to-late pregnancy to match the exponentially rising insulin resistance 1, 2, 4
The American College of Obstetricians and Gynecologists recommends adjusting bolus parameters, including insulin-to-carbohydrate ratios and correction factors, to achieve stricter pregnancy targets, with a goal of more aggressive postprandial insulin delivery 1, 2

The American Diabetes Association recommends self-monitoring of blood glucose as the primary tool for insulin dose adjustments, with a goal of checking glucose at least 4-7 times daily, including preprandially and 1-2 hours postprandially 1, 2, 3
The Endocrine Society suggests adding continuous glucose monitoring as an adjunct to self-monitoring, which can reduce large-for-gestational-age births, neonatal hypoglycemia, and hospital length of stay 1, 4

The American College of Obstetricians and Gynecologists emphasizes the importance of preprandial testing to adjust premeal rapid-acting insulin doses appropriately, and postprandial monitoring to achieve better glycemic control and lower preeclampsia risk 1, 4, 5

The American Diabetes Association warns against insufficient dose escalation, over-reliance on A1C, and fear of hypoglycemia leading to inadequate control, which can increase the risk of fetal complications 1, 2, 4
The Endocrine Society recommends maintaining consistent carbohydrate intake matched to insulin doses, and ignoring carbohydrate consistency can make pump management nearly impossible 1, 6