Obesity Surgery

, Volume 18, Issue 12, pp 1517–1521 | Cite as

Pregnancy Following Gastric Bypass for Morbid Obesity: Effect of Surgery-to-Conception Interval on Maternal and Neonatal Outcomes

  • Joseph R. Wax
  • Angelina Cartin
  • Renee Wolff
  • Sharon Lepich
  • Michael G. Pinette
  • Jacquelyn Blackstone
Research Paper



Conception is discouraged during the period of maximal weight loss following Roux-en-Y gastric bypass (RYGB) because of speculative maternal and fetal concerns. We therefore performed a retrospective cohort study of obstetrical and neonatal outcomes by surgery-to-conception interval.


Women with RYGB were stratified into two groups by surgery-to-conception interval of ≤18 or >18 months. Pregnancy and newborn outcomes excluding miscarriages were compared using the chi-square or unpaired t-test for dichotomous and continuous variables, respectively.


Twenty subjects conceived ≤18 months (11.4 ± 5.0) and 32 conceived >18 months (47.5 ± 41) after RYGB, p < .05. Maternal age, parity, body mass index, and weight gain were similar by group. There were no statistically significant differences in adverse obstetrical outcomes (preterm premature membrane rupture, gestational diabetes, oligohydramnios, intrauterine growth restriction, preterm or post-term delivery) or adverse newborn outcomes (5-min Apgar score < 7, intensive care admission, or birth defect).


Obstetrical and neonatal outcomes are similar in women conceiving during or after the period of maximal weight loss following RYGB.


Bariatric surgery Roux-en-Y gastric bypass Pregnancy Obesity 



The authors thank F. Lee Lucas, Ph.D. for performing the statistical analyses.


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Copyright information

© Springer Science + Business Media, LLC 2008

Authors and Affiliations

  • Joseph R. Wax
    • 1
    • 3
  • Angelina Cartin
    • 1
  • Renee Wolff
    • 2
  • Sharon Lepich
    • 2
  • Michael G. Pinette
    • 1
  • Jacquelyn Blackstone
    • 1
  1. 1.Division of Maternal–Fetal Medicine, Department of Obstetrics and GynecologyMaine Medical CenterPortlandUSA
  2. 2.Maine Bariatric Surgery Program, Department of SurgeryMaine Medical CenterPortlandUSA
  3. 3.MMC Ob/Gyn AssociatesPortlandUSA

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