Pregnancy outcomes in women with bariatric surgery as compared with morbidly obese women

• Published in: The journal of maternal-fetal & neonatal medicine Vol. 29; no. 22; p. 3596
• Main Authors: Abenhaim, Haim A, Alrowaily, Nouf, Czuzoj-Shulman, Nicholas, Spence, Andrea R, Klam, Stephanie L
• Format: Journal Article
• Language: English
• Published: England 16.11.2016
• Subjects: Adult; Bariatric Surgery; Congenital Abnormalities - etiology; Databases, Factual; Delivery, Obstetric - methods; Delivery, Obstetric - statistics & numerical data; Female; Fetal Death - etiology; Humans; Infant, Newborn; Logistic Models; Obesity, Morbid - surgery; Pregnancy; Pregnancy Complications - etiology; Pregnancy Outcome; Retrospective Studies; Risk Factors; obstetrical outcomes; obesity; Bariatric surgery; pregnancy
• ISSN: 1476-4954
• DOI: 10.3109/14767058.2016.1143927

Pregnancies among morbidly obese women are associated with serious adverse maternal and neonatal outcomes. Our study objective is to evaluate the effect of bariatric surgery on obstetrical outcomes. We carried out a retrospective cohort study using the healthcare cost and utilization project - Nationwide Inpatient Sample from 2003 to 2011 comparing outcome of births among women who had undergone bariatric surgery with births among women with morbid obesity. Logistic regression was used to estimate the adjusted effect of bariatric surgery on maternal and newborn outcomes. There were 8 475 831 births during the study period (221 580 (2.6%) in morbidly obese women and 9587 (0.1%) in women with bariatric surgery). Women with bariatric surgery were more likely to be Caucasian and ≥35 years old as compared with morbidly obese women. As compared with women with morbid obesity, women with bariatric surgery had lower rates of hypertensive disorders, premature rupture of membrane, chorioamnionitis, cesarean delivery, instrumental delivery, postpartum hemorrhage, and postpartum infection. Induction of labor, postpartum blood transfusions, venous thromboembolisms, and intrauterine fetal growth restriction were more common in the bariatric surgery group. There were no differences observed in preterm births, fetal deaths, or reported congenital anomalies. In general, women who undergo bariatric surgery have improved pregnancy outcomes as compared with morbidly obese women. However, the bariatric surgery group was more likely to have venous thromboembolisms, to require a blood transfusion, to have their labor induced and to experience fetal growth restriction.