Risk for congenital malformations in offspring of women who have undergone bariatric surgery. A national cohort

A Josefsson, M Bladh, A-B Wiréhn, G Sydsjö
BJOG: An International Journal of Obstetrics and Gynaecology 2013, 120 (12): 1477-82

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/m(2) was 1.09 (95% CI 1.03-1.15), whose mothers' BMI ranged between 30 and 34 kg/m(2) was 1.14 (1.05-1.24) and whose mothers' BMI was ≥35 kg/m(2) 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.

Full Text Links

Find Full Text Links for this Article


You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read

Save your favorite articles in one place with a free QxMD account.


Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"