Perinatal outcomes after bariatric surgery: nationwide population based matched cohort study

• Published in: BMJ (Online) 2013-11, Vol.347 (nov12 1), p.f6460-f6460
• Main Authors: Roos, Nathalie, Neovius, Martin, Cnattingius, Sven, Trolle Lagerros, Ylva, Sääf, Maria, Granath, Fredrik, Stephansson, Olof
• Format: Article
• Language: English
• Subjects: Adolescent; Adult; Bariatric Surgery - adverse effects; Birth; Birth Weight; Body mass; Body Mass Index; Cohort analysis; Cohort Studies; Female; Gastrointestinal surgery; Gestational Age; Health risk assessment; Humans; Infant Mortality; Infant, Newborn; Infant, Small for Gestational Age - metabolism; Medicin och hälsovetenskap; Neonates; Obesity; Physicians; Population studies; Population-based studies; Pregnancy; Pregnancy Outcome - epidemiology; Premature birth; Premature Birth - epidemiology; Premature Birth - etiology; Risk Factors; Small for gestational age; Smoking; Stillbirth - epidemiology; Surgery; Sweden - epidemiology; Womens health; Young Adult
• ISSN: 0959-8138; 1756-1833; 1756-1833
• DOI: 10.1136/bmj.f6460

Objective To compare perinatal outcomes in births of women with versus without a history of bariatric surgery.Design Population based matched cohort study.Setting Swedish national health service.Participants 1 742 702 singleton births identified in the Swedish medical birth register between 1992 and 2009. For each birth to a mother with a history of bariatric surgery (n=2562), up to five control births were matched by maternal age, parity, early pregnancy body mass index, early pregnancy smoking status, educational level, and year of delivery. Secondary control cohorts, including women eligible for bariatric surgery (body mass index ≥35 or ≥40), were matched for the same factors except body mass index. History of maternal bariatric surgery was ascertained through the Swedish national patient register from 1980 to 2009.Main outcome measures Preterm birth (