Vaginal Cesarean Section, an Alternative to High-Risk Trigger on Scarred Uterus

The objective is to report a clinical case of vaginal cesarean section performed to expel a dead fetus in scarred uterus. For this indication, vaginal hysterectomy constitutes an alternative to vaginal expulsion with a high risk of uterine rupture and to classic abdominal cesarean section with risk of significant surgical trauma, particularly adhesions. However, this surgical technique, described since the 19th century, remains unknown to many practitioners and few publications exist on the subject throughout the world. Considered obsolete by some practitioners, it retains all its advantages in the practice of modern obstetrics. We report this case of expulsion of fetal death on a tri-scarred uterus performed by vaginal cesarean section at the Health District Reference Health Center (District Hospital) of Commune I in Bamako, Mali in a 37-year-old patient with a pregnancy of 27 weeks of amenorrhea.

Comparative study for success rate of vaginal birth after cesarean section following labor induction by two forms of vaginal dinosprostone: A pilot study

Background: Cesarean delivery has become the most common major surgical procedure in many parts of the world. Induction of labor in women with prior cesarean delivery is an alternative to mitigate the rising cesarean rates. Objectives: To compare the VBAC success rate between two vaginal forms of dinoprostone for labor induction in women with prior cesarean section. Material and Methods: A pilot study was conducted at a large Governmental Hospital, Dhahran, Saudi Arabia, including 200 women with prior cesarean section and planned for labor induction. Participants were randomly allocated into two groups. Group A (n = 100) received dinoprostone 1.5 mg vaginal tablet. Group B (n = 100) received 10 mg dinoprostone sustained release vaginal pessary. Primary outcome was vaginal delivery rate. Secondary outcomes included maternal and neonatal outcomes. Results: The dinoprostone vaginal tablet and dinoprostone vaginal pessary had a comparable vaginal delivery rate (67% and 64%, respectively;p = 0.78). The median patient satisfaction with the birth process was superior in the dinoprostone vaginal pessary group (p = 0.04). Maternal and neonatal outcomes were similar in both groups. Conclusion: Both forms of dinoprostone were effective methods for labor induction in women with prior cesarean section. However, the patient satisfaction with the birth process was in favor of the dinoprostone sustained release vaginal pessary.

Vaginal Birth after a Cesarean Section at Good Shepherd Mission Hospital at Tshikaji in Democratic Republic of the Congo (DRC)

Background: The success rate of vaginal birth after cesarean section with a single cesarean scar is greater than 50%, the lack of the information about the safety of vaginal birth after cesarean delivery pushes most of obstetricians to increase the num ber of cesarean sections following a previous cesarean section. Guidelines for Vaginal birth after cesarean (VBAC) indicate that TOLAC offers women with no contraindications and one previous transverse low-segment cesarean. The objective of the current study was to study the outcome of trial of labour after caesarean section (TOLAC), the indications for emergency repeat cesarean section and to determine the maternal and fetal prognosis in vaginal birth after caesarian section (VBAC) at Tshikaji Mission Hospital. Patients, Material and Methods: This is a retrospective study of the records of 126 women were selected to undergo the TOLAC in the department of gynecology and obstetrics at the Tshikaji Mission Hospital over the period from January 1st to December 31st, 2021. The data on demography, antenatal care, labour and delivery and outcomes were collected from the maternity unit of this hospital. The data were analyzed using SPSS version 2.0. Results: The TOLAC in 126 studied women. The course of work allowed vaginal delivery 107 parturient women, a success rate of successful VBAC of 85% after the TOLAC. The repeat emergency cesarean section was necessary for delivery in 15% of cases for failed TOLAC. There was no maternal mortality, but we recorded one fetal death or 0.8% of perinatal mortality, 2 cases of cicatricial dehiscence, the incidence of 1.6%. Maternal morbidity after delivery on cicatricial uterus was dominated by postpartum hemorrhages, with 19 cases or 15.1% of cases. Cervical dilatation of more than 3 cm at the time of admission, the parity more than 3 and were the significant factors in favor of a successful VBAC. Birth weight of more than 3500 g, fetal distress and malpresentation were associated with a lower success rate of VBAC. The TOLAC in selected cases has great importance in the present era of the rising rate of primary CS especially in rural areas. Conclusion: Pregnancy on a cicatricial uterus represents a high-risk pregnancy. Trial of VBAC in selected cases has great importance in the present era of the rising rate of primary CS especially in rural areas. There is a significantly high vaginal birth after caesarian section (VBAC) success rate among selected women undergoing trial of scar in Tshikaji Hospital. TOLAC remains the option for childbirth in low resource settings as Kasai region in DRC. Adequate patient education and counselling in addition to appropriate patient selection for TOLAC remain the cornerstone to achieving high VBAC success rate.

Prediction of Success Rates of Vaginal Birth after Cesarean Delivery According to the Previous Indication for Cesarean Delivery

Background: Trial of labor after cesarean delivery (TOLAC) has long been accepted as a safe option for women with previous cesarean delivery. Previous efforts have been exerted in trials to predict the success rates of TOLAC according to specific parameters related to previous cesarean section and before TOLAC. We aimed to investigate the different indications of previous cesarean delivery as independent predictors for successful vaginal birth. Methods: A retrospective study was conducted in Armed Forces Hospitals of the Southern Region between December 15, 2019, and July 1, 2020. The included 566 patients with previous cesarean section who were willing to undergo a trial of labor were divided into two groups according to the success of vaginal birth (VBAC). Results: The nonrecurring indications for previous cesarean delivery were higher in the successful group (fetal distress 54.7% vs 41.1%, malpresentation 26% vs 21.4%, multifetal pregnancy 3.8% vs 2.7%). Additionally, the successful VBAC group had a significantly higher percentage of previous successful VBAC (47.7% vs 21.9%) and prior vaginal deliveries (58.5% vs 44.2%) and less coincidence of medical disorders and meconium-stained liquor (18.1% vs 26.3% and 3.2% vs 8.2%, respectively) than the unsuccessful group. Conclusion: During counseling regarding trial of labor after cesarean section, indications for previous cesarean section not related to arrest of labor can predict higher success of VBAC. Moreover, previous successful vaginal delivery or VBAC improves the success rates.

Labor Onset, Oxytocin Use, and Epidural Anesthesia for Vaginal Birth after Cesarean Section and Associated Effects on Maternal and Neonatal Outcomes in a Tertiary Hospital in China： A Retrospective Study

Background：In the mainland of China, the trial of labor after cesarean section is still a relatively new technique. In this study, we aimed to investigate the effects of labor onset, oxytocin use, and epidural anesthesia on maternal and neonatal outcomes for vaginal birth after cesarean section （VBAC） in a tertiary hospital in China.Methods：This was a retrospective study carried out on 212 VBAC cases between January 2015 and June 2017 in Beijing Obstetrics and Gynecology Hospital, Capital Medical University. Relevant data were acquired on a form, including maternal age, gravidity and parity, body mass index before pregnancy, weight gain during pregnancy, type of labor onset, gestational age, the use of oxytocin and epidural anesthesia, birth mode, the duration of labor, and neonatal weight. The factors affecting maternal and neonatal outcomes for cases involving VBAC, especially with regards to postpartum hemorrhage （PPH） and fetal distress, were evaluated by univariate analysis and multivariable logistic regression.Results：Data showed that 36 women （17.0%） had postpartum hemorrhage （PPH） and 51 cases （24.1%） featured fetal distress. Normal delivery took place for 163 infants （76.9%） while 49 infants （23.1%） underwent operative vaginal deliveries with forceps. There were 178 cases （84.0%） of spontaneous labor and 34 cases （16.0%） required induction. Oxytocin was used in 54 cases （25.5%） to strengthen uterine contraction, and 65 cases （30.7%） received epidural anesthesia. The rate of normal delivery in cases involving PPH was significantly lower than those without PPH （61.1% vs. 80.1%; χ2 = 6.07, P = 0.01）. Multivariate logistic analysis showed that the intrapartum administration of oxytocin （odds ratio [OR] = 2.47; 95% confidence interval [CI] = 1.07–5.74; P = 0.04） and birth mode （OR = 0.40; 95% CI = 0.18–0.87; P = 0.02） was significantly associated with PPH in VBAC cases. Operative vaginal delivery occurred more frequently in the group with fetal distress than the group without （49.0% vs. 14.9%, χ2 = 25.36, P = 0.00）. Multivariate logistic analysis also revealed that the duration of total labor （OR = 1.01; 95% CI = 1.00–1.03; P = 0.04） and the gestational week of delivery （OR = 1.08; 95% CI = 1.05–1.11; P = 0.00） were significantly associated with fetal distress in VBAC.Conclusions：The administration of oxytocin during labor and birth was identified as a protective factor for PPH in VBAC while birth mode was identified as a risk factor. Finally, the duration of total labor and the gestational week of delivery were identified as risk factors for fetal distress in cases of VBAC. This information might help obstetricians provide appropriate interventions during labor and birth for VBAC.

改良VBAC评分法在剖宫产后阴道试产中的应用

目的探讨改良VBAC评分法在剖宫产后阴道试产中的应用价值。方法选择2014年1月至2019年10月沧州市中心医院产科住院的519例瘢痕子宫再妊娠有阴道分娩要求的孕妇作为研究对象。参考国外的评分方法,即Flamm、Gonen、Grobman、Metz的评分法,进行改良,建立新的评分法,选择与阴道分娩结局相关的各个因素,分为临产前评分及临产后评分两项,利用ROC曲线得到最佳截断值,分析改良的VBAC评分法与试产结局的关系。结果改良的VBAC评分法与Flamm、Metz法比较,ROC曲线下面积(0.979)明显大于Metz法(0.711)、Flamm法(0.623),三者相比,差异具有统计学意义(P<0.05),改良的VBAC评分法得到的最佳截断值为16,大于截断值与小于截断值的阴道分娩率相比,差异有统计学意义(P<0.05);对比分析分值大于截断值的阴道分娩组与非瘢痕子宫阴道分娩组的妊娠结局,肩难产、产后出血、产褥病率、子宫切除、新生儿窒息、产后住院天数比较,差异无统计学意义(P>0.05)。会阴侧切、阴道助产例数较对照组增高,差异具有统计学意义(P<0.05)。结论改良VBAC评分法与其它预测方法比较,能较好的预测剖宫产后阴道分娩的成功率,有一定的临床应用价值。

Disparities in caesarean section prevalence and determinants across sub-Saharan Africa countries

Background:Access to safe Cesarean section(C-section)in resource-constrained settings such as sub-Sahara Africa(SSA)region is a foremost approach to reduce maternal mortality.C-section is an obstetric operative procedure used appropriately to improve delivery outcomes.However,errors in the procedure have enormous potential harm that may outweigh the benefits.This study assessed the prevalence and determinants of C-section in several SSA countries.This study examined the prevalence and determinants associated with cesarean delivery in SSA countries.Methods:Secondary data of women of reproductive age(15-49 years)from the current Demographic and Health Survey(DHS)in 34 SSA countries was utilized in this study.The mode of delivery among women was the primary outcome variable.Percentage and descriptive statistics were used to conduct univariate analyses.Furthermore,multivariable multilevel logistic regression was used to investigate correlates of C-section among SSA women.Results:Results showed disparities in the percentage of C-section among women from 34 SSA countries.C-section at public healthcare settings ranged from 3%in Burkina Faso to 15.6%in Ghana.However,in private healthcare settings,C-section ranged from 0%in Sao Tome and Principe to 64.2%in Rwanda.Overall,C-section was 7.9%from public healthcare and 12.3%from private healthcare facilities respectively.In the adjusted regression model;women aged 35-49 had increase in the odds of C-section,while a unit increase in the number of children ever born had 17 and 20%significant reduction in the odds of C-section in public and private healthcare respectively.Assessing public healthcare settings;women from richer/richest households,male and large size children at birth had increase in the odds of C-section,while those from rich neighbourhood had reduction in the odds of C-section.In private healthcare settings,women with high decision making power and multiple births had increase in the odds of C-section,while those who attended ANC visits had significant reduction in the odds of C-section.Conclusion:The findings from this study would help formulate health policies and implement actions that would improve the outcome of C-section care.Monitoring of emergency obstetric care services is necessary to address issues connected to poor C-section outcomes in resource-constrained settings.Also training of medical personnel including midwives and nurses in emergency obstetric care,ensuring accessibility to life-saving drugs and supplies should be encouraged in health care system.

气囊仿生助产联合硬膜外麻醉分娩镇痛对剖宫产后阴道分娩女性盆底功能的影响

目的探讨气囊仿生助产联合硬膜外麻醉分娩镇痛对剖宫产后阴道分娩(vaginal birth after cesarean section,VBAC)女性盆底功能的影响。方法选取2020年1月至2021年12月南宁市妇幼保健院剖宫产后再次妊娠并成功阴道分娩的经产妇120例为研究对象,根据随机数字表法将其分为观察组和对照组,每组各60例。观察组产妇在分娩过程中采用气囊仿生助产联合硬膜外麻醉分娩镇痛,对照组产妇单纯采用硬膜外麻醉分娩镇痛。比较两组产妇的疼痛视觉模拟评分法(visual analogue scale,VAS)评分、会阴裂伤情况、总产程、产后出血量、新生儿窒息率及产妇产后6~8周尿失禁发生率、阴道或子宫脱垂发生率、盆底肌肌力及功能状态。结果观察组产妇的总产程显著短于对照组,产后出血量显著少于对照组,尿失禁发生率显著低于对照组(P<0.05)。观察组产妇的盆底肌肌力、盆底肌疲劳度、盆底动态压力均显著优于对照组(P<0.05)。两组产妇的会阴裂伤或侧切、阴道和子宫脱垂发生率比较差异均无统计学意义(P>0.05)。结论剖宫产后阴道试产时采用气囊仿生助产联合硬膜外麻醉镇痛可缩短产程,减少产后出血,改善产后盆底功能状况。

前次剖宫产手术时机对再孕阴道分娩母婴并发症的影响

目的探讨前次剖宫产手术时机对再孕阴道分娩母婴并发症的影响。方法回顾性分析本院收治的1034例足月剖宫产术后阴道分娩(VBAC)孕产妇资料。按前次剖宫产手术时机分为择期组(择期行剖宫产术)426例、第一产程组(第一产程行剖宫产术)278例、第二产程组(第二产程行剖宫产术)330例。分析前次剖宫产手术时机对VBAC孕产妇的产程、产后并发症及新生儿出生情况的影响。结果第二产程组子宫收缩乏力比例、产后24 h出血量、产后出血发生率及产后住院天数均大于择期组和第一产程组(P<0.05),而择期组与第一产程组比较,以上指标差异无统计学意义(P>0.05)。3组间第二、第三产程时限、助产率、会阴裂伤率、产后尿潴留率、发热比例及新生儿1 min Apgar评分、新生儿窒息发生率及转入新生儿科比例比较,差异无统计学意义(P>0.05)。结论前次第二产程剖宫产手术孕产妇再孕阴道分娩时发生子宫收缩乏力及产后出血风险增加。

剖宫术后再次妊娠阴道试产成功因素的分析

目的 通过 6 2例剖宫术后再次妊娠的孕妇进行阴道试产 ,分析影响其成功的因素。方法 了解6 2例孕妇前次剖宫产的指征及妊娠间隔时间、手术方式 ,用B超检查胎儿双顶径、胎位、子宫疤痕愈合情况 ,严密观察产程进展 ,必要时加用催产素。结果 5 0例成功地阴道分娩 ,成功率为 80 .6 5 % ,产后常规宫腔探查 ,无子宫疤痕破裂 ,无孕产妇死亡 ,新生儿Apgar评分均为 10分。 结论 剖宫术后阴道分娩是可行的 ,并有助于降低剖宫产率。

中国部分医疗保健机构剖宫产术使用状况调查

目的:描述2002年中国医疗保健机构剖宫产术的使用情况。方法:对中国31个省/自治区/直辖市中部分医疗保健机构进行问卷调查,对调查结果进行描述性分析。结果:①在被调查的887家医疗保健机构中有70.1%开展了剖宫产,在普通乡卫生院开展率也达到了41.0%;②被调查的医疗保健机构中产妇接受剖宫产的比例平均达到38.0%;③被调查的医疗保健机构的剖宫产费用是阴道产的2～4倍。结论:目前剖宫产在我国得到广泛开展,但是在其使用中还存在很多问题,需要引起各方重视。

低浓度罗哌卡因复合小剂量舒芬太尼椎管内分娩镇痛在剖宫产术后再次妊娠阴道分娩中的应用

目的:探讨低浓度罗哌卡因复合小剂量舒芬太尼椎管内分娩镇痛用于剖宫产术后再次妊娠阴道分娩(VBAC)的可行性。方法:回顾分析2012年1月至2013年12月于我院建卡的剖宫产术后再次妊娠要求阴道试产的单胎、足月病例83例,按是否接受椎管内分娩镇痛将研究对象分为镇痛组(37例)和非镇痛组(46例)。比较两组的产程时间、催产素使用情况、分娩方式、产后出血量、新生儿体重及新生儿Apgar评分。结果:两组产妇的年龄、体重指数、孕周比较,差异均无统计学意义。镇痛组的催产素使用率为62.2%,显著高于非镇痛组(21.7%)(P<0.01)。镇痛组镇痛后的VAS评分显著低于镇痛前[(9.43±0.50)分vs(3.16±0.69)分,P<0.01]。两组的产程时间、产后出血量、新生儿体重、Apgar评分比较,差异无统计学意义(P>0.05)。两组均无子宫破裂等严重并发症发生。结论:低浓度罗哌卡因复合小剂量舒芬太尼应用于VBAC安全有效,值得推广。

椎管内分娩镇痛在剖宫产术后再次妊娠阴道分娩中的应用

目的探讨椎管内分娩镇痛用于剖宫产术后再次妊娠阴道分娩(vaginal birth after cesarean section,VBAC)的可行性和安全性。方法回顾性分析2016年1月~2017年3月于我院阴道分娩的剖宫产术后再次妊娠的单胎足月孕妇资料,其中接受椎管内分娩镇痛25例(镇痛组),43例未接受(非镇痛组)。2组产妇年龄、体重指数、分娩孕周、新生儿体重差异均无统计学意义(P>0.05)。比较2组产程时间、产后出血率、产后尿潴留率及新生儿窒息率。结果镇痛组镇痛后半小时的疼痛视觉模拟评分(2.2±1.0)分,显著低于镇痛前的(8.6±1.0)分(配对t检验,t=22.09,P=0.00)。2组第一产程时间、第二产程时间、产钳率、新生儿窒息率、产后出血率差异无统计学意义(P>0.05)。2组均无子宫破裂等严重并发症发生。结论椎管内麻醉应用于VBAC安全有效,在有条件的医院可推广应用。

剖宫产后再次妊娠自然临产分娩方式的探讨

目的:探讨剖宫产后再次妊娠孕妇自然临产分娩方式的选择。方法:回顾性研究2015年1月-2016年4月在苏州母子医疗保健中心入院分娩且曾有1次剖宫产史的孕妇共230例。所有孕妇均为足月单胎,头位,自然临产,根据孕妇意愿分为阴道试产(trial of labor after cesarean,TOLAC)组(98例)和拒绝TOLAC组(132例),TOLAC组根据最终分娩方式分为TOLAC成功组(87例)和TOLAC失败组(11例)。对孕妇的产程管理根据现有规范进行。比较3组的一般人口学特征、前次剖宫产相关因素、母婴结局和社会经济效益。结果:TOLAC成功率为88.78%(87/98),11例因产时胎心异常或产程停滞中转剖宫产终止妊娠。3组体质量指数(BMI)比较,差异有统计学意义,且TOLAC失败组高于TOLAC成功组和拒绝TOLAC组(均P<0.05);其他人口学特征及前次剖宫产相关因素比较,差异均无统计学意义。TOLAC组子宫破裂率与拒绝TOLAC组比较,差异无统计学意义(2.04%vs.1.52%,χ~2=0.091,P=0.767)。3组产时出血量比较差异有统计学意义,且TOLAC成功组明显低于TOLAC失败组和拒绝TOLAC组(均P<0.05);3组输血率比较差异有统计学意义,TOLAC成功组输血率明显低于TOLAC失败组,差异有统计学意义(P<0.05);TOLAC失败组与拒绝TOLAC组在产时出血量和输血率方面差异无统计学意义(P分别为0.434和0.092);3组间新生儿入新生儿重症监护病房(NICU)率差异无统计学意义(P=0.23)。3组均未发生子宫切除和母儿死亡等严重并发症。结论:对于前次剖宫产后再次妊娠的孕妇,只要进行充分评估,在合理的监管模式下,TOLAC是一种合理安全的分娩方式,尤其当这些孕妇临产后,阴道分娩可能是比急诊剖宫产更为安全可靠的分娩方式。

中国部分地区剖宫产后阴道分娩的影响因素研究

目的：探讨中国部分地区剖宫产后阴道分娩（VBAC）的情况及其影响因素，为剖宫产术后妊娠的分娩方式提供参考依据。方法：选取全国4个研究中心10年间VBAC孕妇共142例作为研究对象，采用1：3配对的病例对照设计方案，收集孕产妇及新生儿的相关资料，并通过logistic回归模型进行多因素分析，分析VBAC的影响因素。结果：本研究剖宫产术后妊娠分娩方式中VBAc的比例约为1．3％（142／10452），多因素logistic回归结果显示产妇年龄（OR=0．885，95％CI=0．788～0．994）和产妇分娩前体质指数（BMI）越小，分娩孕周小于37周（OR=9．578，95％CI=3．060～29．975），宫口开大（OR=11．632，95o．4CI=4．544～29．778）、宫颈管消退（OR=2．152，95％CI=1．471～3．149）和先露位置（OR=2．079，95％CI=0．772～5．596）评分较高，则VBAC成功率较高。结论：VBAc与产妇年龄、分娩前BMI、分娩孕周和宫颈成熟度评分相关。

剖宫产后阴道分娩的影响因素和妊娠结局分析

目的:评估剖宫产后阴道分娩(VBAC)的影响因素及其妊娠结局。方法:回顾性研究2015年1月—2016年12月在本院分娩的孕妇210例。所有孕妇均有1次剖宫产史,足月单胎,头位,无妊娠合并症和并发症,意愿阴道试产(TOLAC)。根据最终分娩方式分为TOLAC成功组(VBAC组)和TOLAC失败组。采用单因素分析和多因素Logistic回归分析剖宫产后再次阴道分娩的影响因素,并比较2组的妊娠结局。结果:TOLAC成功率为80.5%(169/210),41例因产时胎心异常或产程停滞中转剖宫产终止妊娠。多因素Logistic回归分析发现,阴道分娩史(OR=9.61,95%CI:1.20~76.96)、自然临产(OR=5.88,95%CI:2.36~14.64)及体质量指数(BMI,OR=0.86,95%CI:0.76~0.97)是剖宫产后再次阴道分娩的影响因素,其中阴道分娩和自然临产是有利因素,高BMI是不利因素,受试者工作特征(ROC)曲线下面积(AUC)为0.76。2组妊娠结局比较,TOLAC成功组出血量和输血率低于TOLAC失败组(P<0.05),新生儿窒息率和新生儿入新生儿监护室(NICU)率差异无统计学意义(P>0.05)。2组均未发生子宫切除和母儿死亡等严重并发症。结论:VBAC的影响因素为阴道分娩史、自然临产和BMI,对于前次剖宫产后再次妊娠的孕妇进行充分个体化评估,进一步构建VBAC预测模型,提高TOLAC成功率。

超声测量宫颈长度与剖宫产术后阴道分娩成功的相关性

目的:分析剖宫产术后阴道分娩(VBAC)的影响因素。方法:选取剖宫产术后阴道试产(TOLAC)的114例孕妇。超声测定其宫颈长度,根据最终是否成功VBAC分为成功组和失败组,采用单因素和多因素Logistic回归分析影响VBAC的因素,观察宫颈长度是否是影响VBAC的独立因素。结果:TOLAC成功率为46.49%。单因素分析显示,成功组和失败者的年龄、出血量、孕产次、距上次剖宫产时间、上次是否进入产程、分娩孕周、阴道分娩史等比较,差异均无统计学意义(均P>0.05);成功组的自然临产率和分娩镇痛率均较失败组高(均P<0.05),新生儿体重低于失败组(P<0.05)。Logistics多因素分析显示,自然临产和宫颈长度为VBAC的独立影响因素,自然临产(B=3.014,P<0.001,OR=20.372)为TOLAC成功的保护因素,宫颈长度为TOLAC成功的危险因素(B=-0.091,P<0.05,OR=0.913)。成功组的平均宫颈长度(19.86±11.05)mm,明显短于失败组[(28.61±7.75)mm](P<0.01)。宫颈长度每减少1mm对TOLAC成功的优势比为1.095。结论:自然临产是TOLAC成功的有利因素,超声测量的宫颈长度为TOLAC成功率的独立影响因素。

瘢痕子宫再次妊娠经阴道分娩的安全性研究

目的探讨瘢痕子宫阴道试产的可行性和安全性。方法通过回顾性分析140例瘢痕子宫再次妊娠分娩产妇的临床资料,按患者分娩意愿将患者分为两组,66例患者采用阴道试产进行分娩作为阴道试产组;其他74例患者采用剖宫产进行分娩作为剖宫产组;另选取同期在我院阴道分娩的非瘢痕子宫患者70例作为对照组。观察三组患者分娩情况以及并发症情况。结果阴道试产组出血量、住院时间、新生儿体质量、住院费用均优于剖宫产组,差异有统计学意义(P <0. 05);而阴道试产组上述指标与对照组差异无统计学意义(P> 0. 05)。阴道试产组、剖宫产组、对照组并发症发生率分别为7. 58%、16. 22%、2. 86%。结论在严格评估和良好的产时监护下,瘢痕子宫再次妊娠经阴道分娩是安全可行的。

剖宫产后阴道分娩的现况

剖宫产后阴道分娩(vaginal birth after cesarean section,VBAC)是指既往有剖宫产史者,再次妊娠时采用阴道分娩的方式。因对VBAC安全性的疑虑,以往绝大部分产妇以再次剖宫产终止妊娠,但经临床实践和研究证实,VBAC的主要影响因素有剖宫产切口类型及缝合方式、剖宫产次数、既往有无阴道分娩、孕产妇年龄及体质量、胎儿体质量及是否多胎妊娠和本次阴道试产是否采用缩宫素及前列腺素E2引产。只要严格把握VBAC的指征,认真评估VBAC的母婴风险,严密监护和及时处理异常情况,VBAC是安全、有效、经济的分娩方式。正确应用VBAC,可提高其安全性和成功率,进而降低异常升高的剖宫率。

宫颈Bishop评分动态观察在剖宫产术后再次妊娠阴道分娩中预防子宫破裂的价值

目的动态观察宫颈Bishop评分在预测剖宫产术后再次妊娠阴道分娩(VBAC)中子宫破裂的价值。方法对2013年6月至2014年3月禄丰县人民医院70例VBAC(研究组)的分娩结局及母婴并发症进行回顾性分析,并和同期首次阴道分娩70例患者进行对照。结果研究组55例阴道试产成功,成功率78.5%;对照组63例阴道试产成功,成功率90.0%,两组阴道分娩率无统计学差异(x^2=3.45,P=0.06)。研究组因宫颈条件不良行剖宫产率(17.1%)显著高于对照组(0.04%)x^2=11.43,P<0.05。研究组4例新生儿轻度窒息,对照组6例新生儿轻度窒息,两组无显著性差异(x^2=0.43,P=0.05),两组产后出血量比较无显著性差异(t=0.67,P=0.30)。结论剖宫产术后再次妊娠符合阴道分娩条件者在严密监护下阴道分娩是安全的,但阴道试产4小时后宫颈Bishop评分变化≤2分,建议及时终止妊娠,预防子宫破裂。