Risk Stratification in Twin Pregnancies Complicated by GDM

Area of Science:

• Obstetrics and Gynecology
• Endocrinology
• Perinatology

Background:

• Gestational diabetes mellitus (GDM) in twin pregnancies presents unique management challenges.
• Identifying early indicators for insulin therapy is crucial for optimizing maternal and fetal outcomes.

Purpose of the Study:

• To assess the association between oral glucose tolerance test (OGTT) glucose thresholds and the need for insulin therapy in twin pregnancies with GDM.
• To establish predictive values for insulin requirement based on OGTT results.

Main Methods:

• Post hoc analysis of a 18-year cohort study including 446 twin pregnancies with GDM.
• Evaluation of maternal characteristics and fasting, 1-hour, and 2-hour glucose concentrations from a 75-g OGTT.
• Statistical methods included logistic regression, predictive values, AUC, and random forest analysis.

Main Results:

• Fasting (p < 0.01) and 1-hour (p < 0.01) OGTT glucose levels significantly predicted insulin therapy requirement.
• Identified thresholds: 95 mg/dL for fasting glucose and 184 mg/dL for 1-hour OGTT.
• Additional thresholds for insulin indication: 108 mg/dL (G0), 215 mg/dL (G60), and 86 mg/dL (G120).

Conclusions:

• Specific OGTT glucose thresholds are associated with the need for insulin therapy in twin pregnancies with GDM.
• These thresholds aid in risk stratification and optimizing patient management.
• Early identification of patients requiring insulin therapy can improve GDM management in twin gestations.