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中华产科急救电子杂志 ›› 2019, Vol. 08 ›› Issue (04) : 235 -240. doi: 10.3877/cma.j.issn.2095-3259.2019.04.010

所属专题: 文献

论著

剖宫产术后再次妊娠阴道分娩的安全性及影响因素分析
刘正平1,(), 吴淑贞2, 饶珈铭3, 区瑞凤2, 卢德梅2, 刘雁2   
  1. 1. 528000 广东,佛山市妇幼保健院产科;佛山市胎儿医学研究所
    2. 528000 广东,佛山市妇幼保健院产科
    3. 佛山市胎儿医学研究所
  • 收稿日期:2019-08-25 出版日期:2019-11-18
  • 通信作者: 刘正平
  • 基金资助:
    佛山市科技创新平台项目(2017AG100261); 佛山市科技公关项目(2016AB001761,2018AB000261)

The analysis of safety and influencing factors of the vaginal birth after cesarean section

Zhengping Liu1,(), Shuzhen Wu2, Jiaming Rao3, Ruifeng Ou2, Demei Lu2, Yan Liu2   

  1. 1. Department of Obsterics, Foshan Maternal and Child Health Hospital, Foshan Fetal Medicine Institute, Foshan 528000, China
  • Received:2019-08-25 Published:2019-11-18
  • Corresponding author: Zhengping Liu
  • About author:
    Corresponding author: Liu Zhengping, Email:
引用本文:

刘正平, 吴淑贞, 饶珈铭, 区瑞凤, 卢德梅, 刘雁. 剖宫产术后再次妊娠阴道分娩的安全性及影响因素分析[J]. 中华产科急救电子杂志, 2019, 08(04): 235-240.

Zhengping Liu, Shuzhen Wu, Jiaming Rao, Ruifeng Ou, Demei Lu, Yan Liu. The analysis of safety and influencing factors of the vaginal birth after cesarean section[J]. Chinese Journal of Obstetric Emergency(Electronic Edition), 2019, 08(04): 235-240.

目的

探讨剖宫产术后再次妊娠阴道分娩的安全性及其影响因素。

方法

回顾性分析2017年1月至2018年10月在佛山市妇幼保健院住院分娩的剖宫产术后再次妊娠阴道试产孕妇的临床资料。按照是否成功经阴道分娩分成剖宫产后阴道分娩(vaginal birth after cesarean section, VBAC)组和剖宫产后阴道试产(trial of labor after cesarean,TOLAC)失败组,比较VBAC组和TOLAC失败组患者的妊娠结局,采用多因素Logistic回归分析方法分析VBAC的影响因素。

结果

(1)2017年1月至2018年10月共纳入TOLAC研究的孕妇共323例,其中VBAC率为80.2%(259/323),TOLAC失败率为19.8%(64/323);子宫破裂发生率为0.62%(2/323),均为TOLAC失败组;两组患者均无子宫切除。(2)VBAC组和TOLAC失败组比较,VBAC组头盆评分(7.77±1.15)分,高于TOLAC失败组(7.16±0.70)分,(t=4.891,P<0.001);TOLAC失败组产前阴道出血率6.3%(4/64),高于VBAC组1.2%(3/259),P=0.033;两组的Bishop评分、羊水指数、羊水最深均没有统计学差异(P>0.05)。(3)TOLAC失败组产后出血≥500 ml的比例为51.6%(33/64),高于VBAC组的2.8%(7/259),( χ2=105.500,P<0.001);TOLAC失败组子宫破裂率3.2%(2/64),高于VBAC组(0/259),( χ2=8.144,P=0.017);但两组间产后出血≥1000 ml的比例、输血率没有统计学差异(P>0.05)。(4)VBAC组的分娩孕周、新生儿出生体重、身长、头围和胸围均低于TOLAC失败组,1 min Apgar评分高于TOLAC失败组且具有统计学意义(P<0.05)。(5)多因素分析显示,孕妇的头盆评分(OR=0.610, 95%CI:0.420~0.887,P=0.010)、新生儿出生体重3500~3999 g(OR=4.783, 95%CI:1.431~15.989,P=0.011)和新生儿出生体重≥4000 g(OR=16.042, 95%CI:1.306~196.983,P=0.030)是VBAC的独立影响因素。

结论

在严格的纳入排除标准、系统的产前评估和严密的产程管理下,TOLAC是安全可行的,VBAC成功率也较高。多因素分析显示,头盆评分和胎儿出生体重是VBAC的独立影响因素。

Objective

To explore the safety and influence factors of vaginal delivery after cesarean section (VBAC).

Methods

Retrospectively studied the clinical data of pregnant women undergoing trial of labor after cesarean section (TOLAC) delivered from Foshan Maternal and Child Health Hospital from January 2017 to October 2018. It was divided into the successful group (vaginal birth after cesarean section, VBAC group) and the failure group (trial of labor after cesarean section, TOLAC failure group) based on whether has a success in vaginal birth. Compared the outcomes of VBAC group and TOLAC failure group, and analyzed the independent influence factors of VBAC by multivariate logistic regression.

Results

(1) From January 2017 to October 2018, a total of 323 pregnant women were admitted to the hospital. The rate of VBAC was 80.2% (259/323); the rate of TOLAC failure was 19.8% (64/323); and the rate of uterine rupture was 0.62% (2/323), occurred in the TOLAC failure group. Both groups had no hysterectomy occurred. (2) The VBAC group′s cephalopelvic score (7.77±1.15) was higher than the TOLAC failure group (7.16±0.70), (t=4.891, P<0.001). The rate of prenatal vaginal bleeding in VBAC group (6.3%, 4/64) was higher than that in VBAC group (1.2%, 3/259), P=0.033; There was no significant difference in both groups in the Bishop score, amniotic fluid index and amniotic fluid volume (P>0.05). (3) The proportion of postpartum hemorrhage equal or greater than 500 ml in the TOLAC failure group was 51.6%(33/64), higher than VBAC group (2.8%, 7/259), ( χ2=105.500, P<0.001); The uterine rupture rate in the TOLAC failure group was 3.2%(2/64), higher than that in VBAC group (0/259), ( χ2=8.144, P=0.017); There was no significant difference in the ratio of postpartum hemorrhage equal or greater than 1000 ml between two groups (P>0.05). (4) The VBAC group had lower gestational week, birth weight, body length, head circumference and chest circumference than the TOLAC failure group, and the APGAR score in one min was higher than the TOLAC failure group with significant difference (P<0.05). (5) Multivariate logistic regression analysis showed that the cephalopelvic score of pregnant women (OR=0.610, 95%CI: 0.420~0.887, P=0.010) and fetal weight >3500 g or 4000 g(OR=4.783, 95%CI: 1.431~15.989, P=0.011; OR=16.042, 95%CI: 1.306~196.983, P=0.030)were the independent factors to influence VBAC.

Conclusions

Under the strict exclusion criteria, systematic prenatal assessment and delivery management, TOLAC is safe and also with high VBAC rate. The cephalopelvic score of pregnant women and fetal weight are the independence factors of VBAC.

表1 两组孕妇一般情况及产前检查的比较
表2 两组孕妇及新生儿临床结局的比较
表3 瘢痕子宫阴道试产失败中转剖宫产影响因素的多因素分析
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