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Acta Obstet Gynecol Scand. 2010 Jul;89(7):924-30. doi: 10.3109/00016341003657884.

Maternal super-obesity (body mass index > or = 50) and adverse pregnancy outcomes.

Author information

  • 1Department of Obstetrics and Gynecology, Medical University of South Carolina, Charleston, South Carolina 29425, USA. alanis@musc.edu

Abstract

OBJECTIVE:

To determine if pregnancy complications are increased in super-obese (a body mass index (BMI) of 50 or more) compared to other, less obese parturients.

DESIGN:

Cross-sectional study.

SETTING AND POPULATION:

All 19,700 eligible women, including 425 (2.2%) super-obese women with singleton births between 1996 and 2007 delivering at a tertiary referral center, identified using a perinatal research database.

METHODS:

Bivariate and trend analyses were used to assess the relation between super-obesity and various pregnancy complications compared to other well-established BMI categories. Adjusted odds ratios (ORs) were calculated using multivariable logistic regression techniques.

MAIN OUTCOME MEASURES:

Outcomes for adjusted and unadjusted analyses were small-for-gestational age (SGA) birth, large-for-gestational age (LGA) birth, preeclampsia, gestational diabetes mellitus (GDM), fetal death, preterm birth, placental abruption, cesarean delivery, and Apgar scores < 7.

RESULTS:

Compared to all other obese and non-obese women, super-obese women had the highest rates of preeclampsia, GDM, LGA, and cesarean delivery (all p < 0.05 for trend test). Super-obesity was also associated with a 44% reduction in SGA compared to all other women (OR 0.55, 95% confidence interval (CI) 0.40-0.76) and a 25% reduction compared to other, less obese women (OR 0.75, 95% CI 0.54-1.03). Super-obesity was positively associated with LGA, GDM, preeclampsia, cesarean delivery, and a 5-minute Apgar score < 7 compared to all other women after controlling for important confounders.

CONCLUSION:

Super-obesity is associated with higher rates of pregnancy complications compared to women of all other BMI classes, including other obese women.

PMID:
20438391
[PubMed - indexed for MEDLINE]
PMCID:
PMC3316123
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