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Risk for congenital malformations in offspring of women who have undergone bariatric surgery. A national cohort
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping.
Linköping University, Department of Clinical and Experimental Medicine, Obstetrics and gynecology. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping.
Linköping University, Department of Clinical and Experimental Medicine, Obstetrics and gynecology. Linköping University, Faculty of Health Sciences.
Linköping University, Department of Clinical and Experimental Medicine, Division of Clinical Sciences. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Center of Paediatrics and Gynaecology and Obstetrics, Department of Gynaecology and Obstetrics in Linköping.
2013 (English)In: British Journal of Obstetrics and Gynecology, ISSN 1470-0328, E-ISSN 1471-0528, Vol. 120, no 12, 1477-1482 p.Article in journal (Refereed) Published
Abstract [en]

Objective

To study the risk for congenital anomalies in the first child of women after bariatric surgery compared with all other women giving birth to their first child and divided by maternal body mass index (BMI) groups.

Design

Prospective, population-based register study.

Setting

Sweden.

Sample

All firstborn children to women born 1973–83 were studied to determine if they had a congenital anomaly and a mother who had undergone bariatric surgery before pregnancy.

Methods

A total of 270 805 firstborns; of which 341 had mothers who had had bariatric surgery before delivery. We retrieved information on the women's marital or cohabitation status, smoking, BMI, diabetes and hypertension during pregnancy.

Main outcome measures

Congenital malformations.

Results

Of the firstborn children to mothers who had had bariatric surgery before pregnancy, 4.1% (95% confidence interval [95% CI] 2.2–6.0) were malformed compared with 3.4% (95% CI 3.3–3.5) of those whose mothers had not undergone bariatric surgery. The risk for congenital malformation in firstborn children increased with increasing maternal BMI. The adjusted odds ratio (OR) for congenital malformation among children whose mothers' BMI ranged between 25 and 29 kg/m2 was 1.09 (95% CI 1.03–1.15), whose mothers' BMI ranged between 30 and 34 kg/m2 was 1.14 (1.05–1.24) and whose mothers' BMI was ≥35 kg/m2 was 1.30 (95% CI 1.16–1.45) compared with those whose mothers had a normal BMI. Bariatric surgery before pregnancy did not have any effect on the odds ratio for having congenital malformation (OR = 1.09, 95% CI 0.63–1.91).

Conclusions

Preconception bariatric surgery does not seem to affect the risk for congenital malformations but a high to very high BMI does appear to increase the risk.

Place, publisher, year, edition, pages
Wiley-Blackwell , 2013. Vol. 120, no 12, 1477-1482 p.
Keyword [en]
Bariatric surgery, birth defects, congenital malformations, obesity, pregnancy
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-100473DOI: 10.1111/1471-0528.12365ISI: 000325627200006OAI: oai:DiVA.org:liu-100473DiVA: diva2:662987
Note

Funding Agencies|County Council of Ostergotland, Sweden||

Available from: 2013-11-08 Created: 2013-11-08 Last updated: 2017-12-06

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Josefsson, AnnBladh, MarieSydsjö, Gunilla

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British Journal of Obstetrics and Gynecology
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