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Revista Peruana de Ginecología y Obstetricia
On-line version ISSN 2304-5132
Abstract
RONDON-TAPIA, Martha et al. Predictors of successful vaginal delivery following cesarean section. Rev. peru. ginecol. obstet. [online]. 2023, vol.69, n.1, 00005. Epub Mar 27, 2023. ISSN 2304-5132. http://dx.doi.org/10.31403/rpgo.v69i2476.
Objective
: To determine predictors of successful vaginal delivery following primary transverse segmental cesarean section for non-recurring cause.
Design
: Casecontrol study. Institution: Hospital Central "Dr. Urquinaona", Maracaibo, Venezuela.
Methods
: Pregnant women with spontaneous onset of labor and history of cesarean section with transverse incision in the lower segment for non-recurrent cause. The trial of labor was considered successful if it ended in vaginal delivery.
Main study measures
: Maternal age, parity, frequency of labor prior to previous cesarean section, gestational age at delivery, station of fetal cephalic presentation at admission, and fetal weight.
Results
: A total of 126 pregnant women were selected, of whom 85 (67.4%) had successful trials (vaginal delivery), while 41 (32.5%) had a failed trial. No differences in general characteristics were found between groups (p = ns). Univariate analysis showed that fetal weight equal to or less than 3,500 grams, station of fixed or engaged fetal cephalic presentation, and gestational age less than 40 weeks were significant predictors of successful trial of labor outcome (p < 0.05). Logistic regression analysis showed that fetal weight equal to or greater than 3,500 grams (p = 0.04) and station of floating insinuated fetal cephalic presentation (p = 0.03) retained significance as predictors.
Conclusion
: Predictors for a successful trial of vaginal delivery following cesarean section were fetal weight less than or equal to 3,500 grams and station of fixed or engaged fetal cephalic presentation.
Keywords : Vaginal birth after cesarean; Trial of labor; Fetal presentation; Fetal station; Fetal weight; Cesarean section.