The maternal body mass index: a strong association with delivery route.
2010 Sep
Journal Article
Authors:
Kominiarek, M.A.;
VanVeldhuisen, P.;
Hibbard, J.;
Landy, H.;
Haberman, S.;
Learman, L.;
Wilkins, I.;
Bailit, J.;
Branch, W.;
Burkman, R.;
Gonzalez-Quintero, V.Hugo;
Gregory, K.;
Hatjis, C.;
Hoffman, M.;
Ramirez, M.;
Reddy, U.M.;
Troendle, J.;
Zhang, J.
Secondary:
Am J Obstet Gynecol
Volume:
203
Pagination:
264.e1-7
Issue:
3
PMID:
20673867
DOI:
10.1016/j.ajog.2010.06.024
Keywords:
Adult; body mass index; Cesarean Section; Cohort Studies; Female; Humans; Parity; Pregnancy; Recurrence; Regression Analysis; Risk Assessment
Abstract:
OBJECTIVE: We sought 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 > or = 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 and multiparas with and without a prior cesarean. Repeat cesareans were performed in > 50% of laboring women with a BMI > 40 kg/m(2). The risk for cesarean increased as BMI increased for all subgroups, P < .001. The risk for cesarean increased by 5%, 2%, and 5% for nulliparas and multiparas with and without a prior cesarean, respectively, for each 1-kg/m(2) increase in BMI.CONCLUSION: Admission BMI is significantly associated with delivery route in term laboring women. Parity and prior cesarean are other important predictors.
