Intrauterine Fetal Growth Delay During Late Pregnancy After Maternal Gastric Bypass Surgery

Author:

Feichtinger Michael123,Falcone Veronica1,Schoenleitner Theresa1,Stopp Tina1,Husslein Peter Wolf1,Eppel Wolfgang1,Chalubinski Kinga M.1,Göbl Christian S.1

Affiliation:

1. Department of Obstetrics and Gynecology, Division of Obstetrics and Feto-maternal Medicine, Medical University of Vienna, Austria

2. Wunschbaby Institut Feichtinger, Vienna, Austria

3. Department of Oncology-Pathology, Karolinska Institutet, Stockholm, Sweden

Abstract

Abstract Purpose To investigate intrauterine fetal growth development and birth anthropometry of fetuses conceived after maternal gastric bypass surgery. Materials and Methods Longitudinal cohort study describing longitudinal growth estimated by ultrasound on 43 singleton pregnancies after gastric bypass compared to 43 BMI-matched controls. Results In fetuses after maternal gastric bypass surgery, growth percentiles decreased markedly from the beginning of the second trimester until the end of the third trimester (decrease of 3.1 fetal abdomen circumference percentiles (95 %CI 0.9–5.3, p = 0.007) per four gestational weeks). While in the second trimester, fetal anthropometric measures did not differ between the groups, the mean abdomen circumference percentiles appeared significantly smaller during the third trimester in offspring of mothers after gastric bypass (mean difference 25.1 percentiles, p < 0.001). Similar tendencies have been observed in estimated fetal weight resulting in significantly more SGA offspring at delivery in the gastric bypass group. In children born after maternal gastric bypass surgery, weight percentiles (32.12th vs. 55.86th percentile, p < 0.001) as well as placental weight (525.2 g vs. 635.7 g, p < 0.001) were significantly reduced compared to controls. Conclusion In fetuses conceived after maternal gastric bypass, intrauterine fetal growth distinctively declined in the second and third trimester, most prominently observed in fetal abdomen circumferences. Birth weight and placental weight at birth was significantly lower compared to BMI-matched controls, possibly due to altered maternal metabolic factors and comparable to mothers experiencing chronic hunger episodes.

Publisher

Georg Thieme Verlag KG

Subject

Radiology Nuclear Medicine and imaging

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