2025 Volume 61 Issue 2 Pages 290-295
The purpose of this study is to identify the factors involved in the success of twin vaginal delivery. This study was based on a retrospective review of medical records for twin pregnancies delivered at our hospital from September 2018 to August 2023. The criteria used at our hospital to permit vaginal delivery for twin pregnancies include the following conditions: first twin must be in a cephalic presentation, estimated fetal body weight of both twins is more than 1,800 grams, diamniotic twin, there must be no contraindications for vaginal delivery, and the patient must wish to attempt vaginal delivery.
Among the twin pregnancies that underwent a trial vaginal delivery, those that resulted in vaginal delivery of both children were considered the successful group. To identify the success factors for vaginal delivery in twin pregnancies, we performed statistical analyses on eight variables: maternal age, pre-pregnancy BMI, parity, assisted reproductive technology（ART）, chorionicity, induced labor, the fetal presentation of the second twin, and the birth weight discordance between the twins. Of the 338 total twin pregnancies, 92 attempted vaginal delivery, 80（87.0%）in the successful group and 12（13.0%）in the unsuccessful group. The successful group had significantly more multiparous patients and non-ART pregnancies. To increase the rate of vaginal deliveries, multiparous patients and non-ART pregnancies should be aggressively considered for twin vaginal deliveries.
