ArticleInternational journal of obesity (2005)2015
Maternal and neonatal outcomes for pregnancies before and after gastric bypass surgery.
Article in International journal of obesity (2005), 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers, 5 of them syntheses that pooled it.
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Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
30 citing papers in PubMed, 5 syntheses or guidelines pooled it, 126 citations in OpenAlex.
- Adverse perinatal outcomes after Roux-en-Y Gastric Bypass vs. Sleeve Gastrectomy: a systematic review.BMC pregnancy and childbirth · 2023Pooled it
- Preconceptional maternal weight loss and hypertensive disorders in pregnancy: a systematic review and meta-analysis.European journal of clinical nutrition · 2021Pooled it
- Pooled it
- Pregnancy after bariatric surgery and adverse perinatal outcomes: A systematic review and meta-analysis.PLoS medicine · 2019Pooled it
- Bariatric surgery and birth defects: A systematic literature review.Paediatric and perinatal epidemiology · 2018Pooled it
- Preconception metabolic-bariatric surgery and child health outcomes: Identification and cohort profile of the POSIT study protocol.medRxiv : the preprint server for health sciences · 2026Article
- The Relationship Between Obesity, Bariatric Surgery, and Infertility: A Systematic Review.Life (Basel, Switzerland) · 2025Review
- Pathophysiology of Maternal Obesity and Hypertension in Pregnancy.Journal of cardiovascular development and disease · 2025Review
- Beyond Weight Loss: A Comprehensive Review of Pregnancy Management following Bariatric Procedures.Medicina (Kaunas, Lithuania) · 2024Review
- Increased glycemic variability in pregnant women with Roux-en-Y gastric bypass compared with sleeve gastrectomy.BMJ open diabetes research & care · 2024Observational
- Micronutrient Status in Pregnant Women after Metabolic Bariatric Surgery in the United Arab Emirates: A Prospective Study.Nutrients · 2023Article
- Medical and Psychological Aspects of Pregnancy in Women with Obesity and after Bariatric Surgery.Nutrients · 2023Review
- Maternal and fetal outcomes after bariatric surgeries.Przeglad menopauzalny = Menopause review · 2023Article
- Familial aggregation of stillbirth: A pedigree analysis of a matched case-control study.BJOG : an international journal of obstetrics and gynaecology · 2023Article
- Pregnancy Complications in Women with Weight Loss Surgery Compared to a Non-Surgical Population of Women with Obesity.Obesity surgery · 2022Article
- Fertility, pregnancy and post partum management after bariatric surgery: a narrative review.The Medical journal of Australia · 2022Review
- Association of prenatal substance use disorders with pregnancy and birth outcomes following bariatric surgery.International journal of obesity (2005) · 2022Article
- Racial Disparities in Obesity Treatment Among Children and Adolescents.Current obesity reports · 2021Review
- Pregnancy Less Than 1 Year After the Bariatric Surgery: Is It Really Safe?Obesity surgery · 2021Article
- Glucose Homeostasis, Fetal Growth and Gestational Diabetes Mellitus in Pregnancy after Bariatric Surgery: A Scoping Review.Journal of clinical medicine · 2020Article
Corrections and comments
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Authors and funding
16 authors at 5 institutions in 1 country.
Funding
Abstract
backgroundInteraction between maternal obesity, intrauterine environment and adverse clinical outcomes of newborns has been described.
methodsUsing statewide birth certificate data, this retrospective, matched-control cohort study compared paired birth weights and complications of infants born to women before and after Roux-en-Y gastric bypass surgery (RYGB) and to matched obese non-operated women in several different groups. Women who had given birth to a child before and after RYGB (group 1; n=295 matches) and women with pregnancies after RYGB (group 2; n=764 matches) were matched to non-operated women based on age, body mass index (BMI) prior to both pregnancy and RYGB, mother's race, year of mother/s birth, date of infant births and birth order. In addition, birth weights of 13 143 live births before and/or after RYGB of their mothers (n=5819) were compared (group 3).
resultsOdds ratios (ORs) for having a large-for-gestational-age (LGA) neonate were significantly less after RYGB than for non-surgical mothers: ORs for groups 1 and 2 were 0.19 (0.08-0.38) and 0.33 (0.21-0.51), respectively. In contrast, ORs in all three groups for risk of having a small for gestational age (SGA) neonate were greater for RYGB mothers compared to non-surgical mothers (ORs were 2.16 (1.00-5.04); 2.16 (1.43-3.32); and 2.25 (1.89-2.69), respectively). Neonatal complications were not different for group 1 RYGB and non-surgical women for the first pregnancy following RYGB. Pregnancy-induced hypertension and gestational diabetes were significantly lower for the first pregnancy of mothers following RYGB compared to matched pregnancies of non-surgical mothers.
conclusionWomen who had undergone RYGB not only had lower risk for having an LGA neonate compared to BMI-matched mothers, but also had significantly higher risk for delivering an SGA neonate following RYGB. RYGB women were less likely than non-operated women to have pregnancy-related hypertension and diabetes.
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Registered trials
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