Re: Predicting successful vaginal birth after Cesarean section using a model based on Cesarean scar features examined by transvaginal sonography. O. Naji, L. Wynants, A. Smith, Y. Abdallah, C. Stalder, A. Sayasneh, A. McIndoe, S. Ghaem-Maghami, S. Van Huffel, B. Van Calster, D. Timmerman and T. Bourne. Ultrasound Obstet Gynecol 2013; 41: 672-678.

摘要

In this issue of the Journal, Naji et al. suggest a prognostic model for the likelihood of successful VBAC, constructed using a single-center sample of 131 women with VBAC planned at >38 gestational weeks. The outcome measure for this model is successful vaginal delivery and the predictors comprised maternal age, prior successful VBAC, residual myometrial thickness (RMT) in the second trimester and change in RMT from the first to the second trimester (ARMT). The authors should be congratulated for having conducted a methodologically rigorous study using appropriate statistical analyses. However, the rationale for such a model and its construction is not obvious and several issues should be borne in mind when considering the take-home message(s) of this work.