Study on the influencing factors of different delivery modes on scar uterus redelivery and its correlation analysis

ObjectiveTo study the influencing factors of the choice of delivery mode in scar uterus redelivery and its correlation analysis.

MethodsThe vaginal trial delivery in 207 pregnant women with scar uterus were chose.According to the outcome of trial delivery, the pregnant women were divided into the successful trial delivery group and failed trial delivery group, namely vaginal delivery group(131 cases) and repeat cesarean section group(76 cases).The blood loss, duration of labor, rate of puerperal disease, Apgar score and clinical data of neonates were compared between two groups, and the influence of various clinical data on the choice of delivery mode of pregnant women were analyzed using multifactor logistic regression.

ResultsThe blood loss during delivery, duration of labor and rate of puerperal disease in repeat cesarean section group were significantly lower than those in vaginal delivery group(P < 0.01).The differences of the age, gestational week, prenatal body mass index(BMI), interval from previous cesarean section, thickness of the lower uterine segment, vaginal delivery, estimating fetal weight, cervical score, incubation period, urinary retention, fetal position after birth, degree of contraction and incubation cervical score were statistically significant between two groups(P < 0.01).The results of logistic regression analysis showed that the age, gestational week, prenatal BMI, interval from previous cesarean section, lower uterine thickness, fetal weight estimation, cervix score before delivery, vaginal delivery, incubation period, urinary retention, postnatal fetal position, degree of uterine contraction and incubation cervical score were the independent risk factors of the success rate of VBAC(P < 0.05 to P < 0.01).

ConclusionsAfter the age, prenatal BMI, interval from last cesarean section, history of vaginal delivery, regular prenatal examination and scar thickness are strictly screened, the choice of vaginal delivery for pregnant women with scar uterus in the second pregnancy is helpful to improve the outcome of pregnant women's delivery and safety of delivery.