The maternal body mass index: a strong association with delivery route

Abstract

Objective-To assess body mass index (BMI) effect on cesarean risk during labor.Study Design-The Consortium on Safe Labor collected electronic data from 228,668 deliveries. Women with singletons ≥37 weeks and known BMI at labor admission were analyzed in this cohort study. Regression analysis generated relative risks for cesarean stratifying for parity and prior cesarean while controlling for covariates Results-Of the 124,389 women, 14.0% had cesareans. Cesareans increased with increasing BMI for nulliparas, multiparas with and without a prior cesarean. Repeat cesareans were performed in >50% of laboring women with a BMI >40kg/m 2 . The risk for cesarean increased as BMI increased for all subgroups, p<0.001. The risk for cesarean increased by 5%, 2%, and 5% for nulliparas, multiparas with and without a prior cesarean, respectively, for each 1kg/m 2 rise in BMI.Conclusion-Admission BMI is significantly associated with delivery route in term laboring women. Parity and prior cesarean are other important predictors.

Predictive Factors for Cesarean Delivery ? A Retrospective Study

“…Nevertheless multiparas presented a lower risk for cesarean delivery in univariate analysis, which is according to literature [34]. On the other hand, gestation number and previous cesarean section showed no difference between groups.…”

“…Despite in our study maternal BMI has lost its significance in the logistic regression, according to literature maternal BMI can be associated with a significantly longer first labor stage [33] and higher CS rates [34]. On the other hand, maternal BMI was significantly related to newborn birth weight, allowing for a possible intervention in order to improve outcome.…”

Respiratory Morbidity in Late Preterm Births

“…9-11 BMI was included in the model due to increased risk for women with greater BMI to have medical conditions or undergo cesarean delivery which may impact respiratory outcome of the neonates. 12 Maternal medical conditions were included in the model as they have been demonstrated to contribute to morbidity in LPTB as well as need for early delivery 13 . Adjusted odds ratios(OR) and 95% confidence intervals(CI) comparing respiratory outcomes for infants at each gestational week below 39 weeks to those born 39 0/7 to 40 6/7 weeks were estimated from the logistic models.…”

Racial and Ethnic Disparities in Obstetrics and Obstetric Anesthesia in the United States

“…This is probably related to the greater incidence of obesity in the Hispanic population compared with non-Hispanic Whites [53]. Diabetes, gestational diabetes, and obesity are all associated with an increased incidence of macrosomia, shoulder dystocia, and cesarean delivery [54][55][56][57][58]. There also seems to be an increased incidence of preeclampsia in minority women [59,60].…”