Journal
SEMINARS IN PERINATOLOGY
Volume 36, Issue 3, Pages 213-221Publisher
W B SAUNDERS CO-ELSEVIER INC
DOI: 10.1053/j.semperi.2012.05.001
Keywords
pregnancy; maternal obesity; prenatal diagnosis; genetic sonogram; fetal malformations; fetal cardiac malformations; open neural tube defects
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Funding
- NIH [DP21DP2OD001500-01, R01DK080558]
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The incidence of obesity in pregnancy has increased over the past 2 decades, with nearly 50% of U.S. women aged 15-49 years classified as overweight or obese. Obesity (independent of diabetes) among gravidae poses unique risks that extend toward the fetus, with several large population-based analyses demonstrating independent increased risks for fetal malformations including neural tube defects, cardiac anomalies, and orofacial clefts, as well as stillbirth and rnacrosomia. Unfortunately, several lines of evidence also suggest that the quality of the prenatal fetal anatomic survey and certain aspects of prenatal diagnostic screening programs are significantly limited. The net effect is that among obese gravidae, the increased risk of fetal anomalies is further offset by a concomitant diminished ability to sonographically detect such malformations in the prenatal interval. The purpose of this summary review is to systematically examine the evidence suggesting an increased risk of fetal malformations in obese gravidae, the contributing role of diabetes, and the limitations of prenatal diagnostic and sonographic screening among this at-risk population. Semin Perinatol 36:213-221 (c) 2012 Elsevier Inc. All rights reserved.
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