Abstract

Background Maternal bariatric surgery is associated with an increased risk of small-for-gestational-age infants. The risk of nutritional deficiencies in neonates of mothers with prior gastric bypass (GBP) is unclear. Methods This study compared the clinical and cord blood biological characteristics of 56 newborns of GBP mothers and 56 newborns of non-obese healthy mothers after normal pregnancy, in the Obstetrics Department of Angers University Hospital between 01/03/2008 and 31/10/2012. After GBP, the women took daily multivitamin and trace element supplements, were followed monthly once pregnant and had blood drawn at delivery for nutritional assessment. Findings GBP mothers lost 18.1 ± 6.3 kg/m 2 of BMI in the 11–69 months between surgery and pregnancy onset, reaching BMI of 30.1 ± 6.0 kg/m 2 compared with 22.3 ± 4.0 kg/m 2 in the controls ( P P P Interpretation Neonates from GBP mothers showed nutritional deficiencies and the long-term consequences remain to be explored.

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