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DOI: 10.1055/s-0032-1304824
The Association of Gestational Weight Gain per Institute of Medicine Guidelines and Prepregnancy Body Mass Index on Outcomes of Twin Pregnancies
Publication History
22 August 2011
04 December 2011
Publication Date:
07 March 2012 (online)
![](https://www.thieme-connect.de/media/ajp/201206/lookinside/thumbnails/10.1055-s-0032-1304824-1.jpg)
Abstract
Objective To determine if current recommendations for weight gain in twin pregnancies according to maternal prepregnancy body mass index (PPBMI) influence perinatal outcomes.
Methods We identified women with twins enrolled in a maternity risk screening and education program with initial screening and prenatal care initiated at <20 weeks and delivery at >23.9 weeks. Women with normal, overweight, or obese PPBMI were included (n = 5129). Pregnancy outcomes were compared between those women with weight gain meeting or exceeding 2009 Institute of Medicine recommendations and patients who did not meet weight gain guidelines.
Results Rates of spontaneous preterm delivery at <35 weeks were higher in all PPBMI groups for those with weight gain below guidelines. In all PPBMI groups, numbers of pregnancies with both infants weighing >2500 g or >1500 g were significantly higher for women gaining weight at or above guidelines. Logistic regression analysis was utilized to assess multivariate impact on outcome of spontaneous preterm delivery at <35 weeks showing that regardless of PPBMI level, women who gain below recommended guidelines are 50% more likely to deliver spontaneously at <35 weeks.
Conclusion In twin pregnancies, weight gain below recommended guidelines determined by maternal PPBMI is associated with higher rates of spontaneous preterm delivery at <35 weeks.
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