Recurrence of gestational diabetes mellitus

Area of Science:

• Reproductive Endocrinology
• Maternal-Fetal Medicine
• Metabolic Disorders

Background:

• Gestational diabetes mellitus (GDM) affects a significant number of pregnancies.
• Recurrence of GDM poses risks to both maternal and neonatal health.
• Identifying predictive factors for GDM recurrence is essential for improved clinical management.

Purpose of the Study:

• To investigate maternal and neonatal factors associated with the recurrence of gestational diabetes mellitus.
• To identify key predictors for women diagnosed with GDM in a subsequent pregnancy.

Main Methods:

• Retrospective review of 90 patients with GDM in index and subsequent pregnancies.
• Analysis of maternal body mass index (BMI), neonatal birth weight (large for gestational age - LGA), and insulin requirements during the index pregnancy.
• Comparison of glucose tolerance test values between women with and without GDM recurrence.

Main Results:

• Over half (52%) of women with a history of GDM experienced recurrence.
• Recurrence was associated with higher pre-pregnancy BMI (32.8 vs. 28.9 kg/m2), increased incidence of LGA neonates (38% vs. 14%), and greater need for insulin during the index pregnancy (38% vs. 19%).
• Women with recurrence also exhibited higher fasting and post-challenge glucose levels during their index GDM pregnancy.

Conclusions:

• Maternal pre-pregnancy BMI > 35 kg/m2, a history of LGA neonates, and insulin use during a prior GDM pregnancy are significant risk factors for recurrence.
• These findings aid in stratifying risk for GDM recurrence in subsequent pregnancies.