Fetal and perinatal outcomes in type 1 diabetes pregnancy: a randomized study comparing insulin aspart with human insulin in 322 subjects

OBJECTIVE: The objective of the study was a comparison of insulin aspart (IAsp) with human insulin (HI) in basal-bolus therapy with neutral protamine Hagedorn for fetal and perinatal outcomes of type 1 diabetes in pregnancy. STUDY DESIGN: This was a randomized, parallel, open-label, controlled, multicenter, multinational study. Subjects were pregnant (gestational age; < 10 weeks) or planning pregnancy at enrollment. Three hundred twenty-two women with type 1 diabetes received IAsp (n = 157) or HI (n = 165). RESULTS: For IAsp and HI, respectively, there were 137 and 131 live births and 14 and 21 fetal losses. Perinatal mortality was 14 and 22 per 1000 births; number of congenital malformations were 6 and 9; mean (SEM) birthweight corrected for gestational age was 3438 g (71.5) and 3555 g (72.9; P = .091). Mean gestational age was 37.6 vs 37.4 weeks. Preterm delivery occurred in 20.3% (IAsp) and 30.6% (HI) of pregnancies (P = .053). CONCLUSION: The fetal outcome using IAsp was comparable with HI with a tendency toward fewer fetal losses and preterm deliveries.