Weight gain regardless of pre-pregnancy BMI and influence of fetal gender in response to labor induction in postdate pregnancy.

J Matern Fetal Neonatal Med

Section of Obstetrics and Gynecology, Department of Molecular and Developmental Medicine, University of Siena, Siena, Italy.

Published: July 2013

AI Article Synopsis

  • The study aimed to determine how maternal weight gain and BMI changes during pregnancy affect labor induction outcomes in women with overdue pregnancies.
  • It involved 376 first-time moms with unfavorable cervixes, assessing if they had vaginal deliveries within 24 hours post-induction, classifying them into responders and non-responders.
  • Findings revealed that women who did not respond well to induction had significant weight gain over 12 kg and were more likely to have male babies, suggesting these factors may predict failed labor induction.

Article Abstract

Objective: To evaluate whether maternal weight and body mass index (BMI) and their increase throughout pregnancy are associated with the response to labor induction in postdate pregnancies.

Methods: A total of 376 nulliparous women carrying singleton postdate pregnancies with unfavorable cervix were enrolled. We considered as primary outcome vaginal delivery within 24 h after induction, and outcomes were divided into responders (n = 258) and non-responders (n = 107) to the induction of labor to perform the statistical analyses.

Results: In the total population of study, women who successfully delivered within 24 h differed significantly from the remaining patients in terms of maternal weight gain (p = 0.009) and BMI increase (p = 0.02) during pregnancy. In addition, males were significantly more (p = 0.005) than females among newborns of women not responding to induction of labor. In the multivariate analysis, maternal weight gain and fetal sex significantly influenced the induction response. The occurrence of a failed induction of labor was more likely in patients presenting a greater maternal weight gain (cut-off 12 kg) and male fetus.

Conclusion: Weight gain over 12 kg regardless of pre-pregnancy weight and male fetal gender are two novel potential risk factors for the prediction of failure to induction of labor in postdate pregnancy.

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Source
http://dx.doi.org/10.3109/14767058.2013.766712DOI Listing

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