Impact of obesity class on trial of labor after cesarean success: does pre-pregnancy or at-delivery obesity status matter?

Objectiveto investigate whether pre-pregnancy versus at delivery obesity status impacts tolac success rates in a modern cohort.study designa retrospective cohort study of women undergoing tolac at a single institution from may 2007 to april 2016. women were divided into four groups (not obese; class i, ii, and iii obesity) by pre-pregnancy and at delivery weight class. we investigated associations between obesity status at both time points and tolac success rates.resultsix hundred and fourteen women underwent tolac; 444 (72.3%) had successful vbacs. we found no difference in rate of vbac success across the four groups, both prior to pregnancy (p = 0.91) and at delivery (p = 0.75). we found no differences in secondary perinatal morbidity outcomes.conclusionwe found no difference in tolac success rates stratified by obesity class. properly counseling patients on tolacs can lower rates of morbidity in women with high-risk conditions and comorbidities.