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| Effect of cervix dilation balloon for promoting cervical maturation of full term women with scar uterus during vaginal trial delivery and its influence on maternal and infant outcomes |
| 1. People's Hospital of Puyang, Henan Province, 457000; 2.Puyang Medical College |
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Abstract Objective: To investigate the effect of cervical dilatation balloon for promoting cervical maturation of full term women with scar uterus during vaginal trial delivery, and to study its influence on maternal and infant outcomes. Methods: The data of 76 full-term pregnant women with history cesarean section (>2 years) who had experienced vaginal trial delivery from April 2014 to July 2019 were analyzed retrospectively. The included women were divided group A (41 women had accepted promoting cervical maturation by cervical dilatation balloon during vaginal trial delivery) and group B (35 women had accepted promoting cervical maturation by oxytocin during vaginal trial delivery), and 40 full-term pregnant women without scar uterus who had also accepted promoting cervical maturation by cervical dilatation balloon were seleceted in group C during the same period. The cervical Bishop score, labor duration (first and second stage), 24 h postpartum hemorrhage, delivery mode, neonatal birth weight and Apgar score, and the incidences of adverse maternal and infant outcomes were compared among the three groups. The effect of promoting cervical maturation by cervical dilatation balloon was evaluated. Results: The cervical Bishop score of women in the three groups had increased significantly after labor induction intervention. The cervical Bishop score, the total effective rate of promoting cervical maturation, and the vaginal induction rate of women in group A and group C were significant higher than those of women in group B (P<0.05), but those had no significant difference between group A and group C (P>0.05). The incidences of fetal distress, induced labor failure, persistent occipital transverse position, and labor stagnation of women had no significant difference among the three groups (P>0.05) No postpartum hemorrhage of women was found in the three groups. There were no significant difference in the incidences of neonatal asphyxia, soft birth canal laceration, acute chorioamniotic meningitis, 24 h postpartum hemorrhage, and neonatal birth weight, and Apgar score among the three groups (P>0.05). Conclusion: As for full term pregnant women with scar uterus during vaginal trial delivery, cervix dilation balloon can promot cervical maturation and increase the success rate of vaginal induced labor, and can improve maternal and infant outcomes.
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