Optimal weight gain in triplet pregnancies

Area of Science:

• Maternal-Fetal Medicine
• High-Risk Pregnancies
• Obstetrics

Background:

• Triplet gestations represent a high-risk pregnancy cohort.
• Perinatal morbidity is a significant concern in multiple gestations.
• Optimal weight gain strategies for triplet pregnancies are not well-defined.

Purpose of the Study:

• To determine appropriate weight gain targets for triplet gestations.
• To investigate the relationship between maternal weight gain and perinatal outcomes in triplets.
• To identify factors influencing the risk of preeclampsia and preterm birth in triplet pregnancies.

Main Methods:

• Retrospective cohort study of non-anomalous triplet pregnancies (1991-2011).
• Pregnancies stratified by pre-pregnancy Body Mass Index (BMI) and weekly weight gain (low, moderate, excess).
• Primary outcomes: spontaneous preterm birth and preeclampsia.

Main Results:

• Analysis included 116 mothers and 348 neonates.
• Preeclampsia incidence was 37%, and preterm delivery before 32 weeks was 41%.
• No statistical correlation found between weekly weight gain and preterm delivery; preeclampsia risk was primarily linked to BMI, not weight gain.

Conclusions:

• No association identified between increasing weight gain and preeclampsia or preterm delivery in triplet pregnancies.
• Maternal pre-pregnancy BMI, rather than weekly weight gain, significantly influenced preeclampsia risk.
• Current data do not support specific recommendations for optimal weight gain in mothers carrying triplets.