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Obstetric and Neonatal Risks Among Obese Women Without Chronic Disease.

by Grantz, Katherine L.
Citation: Obstetrics & Gynecology. 128(1):104-12, 2016 Jul.Journal: Obstetrics and gynecology.Published: 2016ISSN: 0029-7844.Full author list: Kim SS; Zhu Y; Grantz KL; Hinkle SN; Chen Z; Wallace ME; Smarr MM; Epps NM; Mendola P.UI/PMID: 27275800.Subject(s): Adult | Body Mass Index | *Cesarean Section/sn [Statistics & Numerical Data] | *Diabetes, Gestational/ep [Epidemiology] | Female | *Fetal Macrosomia/ep [Epidemiology] | Humans | *Hypertension, Pregnancy-Induced/ep [Epidemiology] | Infant, Newborn | Obesity/co [Complications] | Obesity/di [Diagnosis] | Obesity/ep [Epidemiology] | *Obesity | Pregnancy | *Pregnancy Complications/di [Diagnosis] | Pregnancy Complications/ep [Epidemiology] | Pregnancy Outcome/ep [Epidemiology] | *Premature Birth/ep [Epidemiology] | Retrospective Studies | Risk Assessment | Risk Factors | United States/ep [Epidemiology]Institution(s): MedStar Washington Hospital CenterDepartment(s): Obstetrics and Gynecology/Maternal-Fetal MedicineIN - Kim, Sung Soo. Epidemiology Branch and the Biostatistics and Bioinformatics Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Rockville, MarylandActivity type: Journal Article.Medline article type(s): Journal ArticleOnline resources: Click here to access online Digital Object Identifier: (Click here) Abbreviated citation: Obstet Gynecol. 128(1):104-12, 2016 Jul.Local Holdings: Available online from MWHC library: 1995 - present, Available in print through MWHC library: 1999 - 2006.Abstract: OBJECTIVE: To investigate whether prepregnancy obesity is associated with adverse pregnancy outcomes among women without chronic disease.Abstract: METHODS: Singleton deliveries (N=112,309) among mothers without chronic diseases in the Consortium on Safe Labor, a retrospective U.S. cohort, were analyzed using Poisson regression with robust variance estimation. Relative risks and 95% confidence intervals (CIs) estimated perinatal risks in relation to prepregnancy obesity status adjusted for age, race-ethnicity, parity, insurance, smoking and alcohol use during pregnancy, and study site.Abstract: RESULTS: Obstetric risks were variably (and mostly marginally) increased as body mass index (BMI) category and obesity class increased. In particular, the risk of gestational hypertensive disorders, gestational diabetes, cesarean delivery, and induction increased in a dose-response fashion. For example, the percentage of gestational diabetes among obese class III women was 14.6% in contrast to 2.8% among women with normal BMIs (corresponding relative risks [95% CI] 1.99 [1.86-2.13], 2.94 [2.73-3.18], 3.97 [3.61-4.36], and 5.47 [4.96-6.04] for overweight, obese class I, obese class II, and obese class III women, respectively) compared with women with normal BMIs. Similarly, neonatal risks increased in a dose-response fashion with maternal BMI status including preterm birth at less than 32 weeks of gestation, large for gestational age (LGA), transient tachypnea, sepsis, and intensive care unit admission. The percentage of LGA neonates increased from 7.9% among women with normal BMIs to 17.3% among obese class III women and relative risks increased to 1.52 (1.45-1.58), 1.74 (1.65-1.83), 1.93 (1.79-2.07), and 2.32 (2.14-2.52) as BMI category increased.Abstract: CONCLUSION: Prepregnancy obesity is associated with increased risks of a wide range of adverse pregnancy and neonatal outcomes among women without chronic diseases.

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