Labor patterns in women attempting vaginal birth after cesarean with normal neonatal outcomes (original) (raw)
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Contemporary Patterns of Spontaneous Labor With Normal Neonatal Outcomes
Obstetrics & Gynecology, 2010
for the Consortium on Safe Labor OBJECTIVE: To use contemporary labor data to examine the labor patterns in a large, modern obstetric population in the United States. METHODS: Data were from the Consortium on Safe Labor, a multicenter retrospective study that abstracted detailed labor and delivery information from electronic medical records in 19 hospitals across the United States. A total of 62,415 parturients were selected who had a singleton term gestation, spontaneous onset of labor, vertex presentation, vaginal delivery, and a normal perinatal outcome. A repeated-measures analysis was used to construct average labor curves by parity. An interval-censored regression was used to estimate duration of labor, stratified by cervical dilation at admission and centimeter by centimeter. RESULTS: Labor may take more than 6 hours to progress from 4 to 5 cm and more than 3 hours to progress from 5 to 6 cm of dilation. Nulliparous and multiparous women appeared to progress at a similar pace before 6 cm. However, after 6 cm, labor accelerated much faster in multiparous than in nulliparous women. The 95 th percentiles of the second stage of labor in nulliparous women with and without epidural analgesia were 3.6 and 2.8 hours, respectively. A partogram for nulliparous women is proposed. CONCLUSION: In a large, contemporary population, the rate of cervical dilation accelerated after 6 cm, and progress from 4 cm to 6 cm was far slower than previously described. Allowing labor to continue for a longer period before 6 cm of cervical dilation may reduce the rate of intrapartum and subsequent repeat cesarean deliveries in the United States.
Journal of Clinical Obstetrics & Gynecology, 2020
Our primary objective is to evaluate the short-term maternal and perinatal results associated with the mode of delivery after cesarean section (CS). A second objective is to investigate the factors governing the success of trial of labor after cesarean (TOLAC). Material and Methods: In this retrospective cohort study, 126 singleton cephalic deliveries of women who had a history of one CS delivery were analyzed. The patients were divided into two groups: those who underwent TOLAC (n=31) and those who underwent elective repeat cesarean section (n=95). Delivery data, demographics, obstetric and medical history, intrapartum events, and maternal and perinatal outcomes were assessed. Results: The rate of successful vaginal birth after cesarean among the women who chose TOLAC was 64.5%. The groups were similar to each other with regard to maternal and perinatal complications. According to the current pregnancy characteristics of the patients with successful and failed vaginal delivery attempts; there were statistically significant differences between the groups in terms of Bishop scores and birth weights. The Bishop scores were higher in the successful TOLAC group (3.5 vs. 1; p=0.001). However, the birth weights were lower in the successful TOLAC group (3393±395 vs. 3708±430; p=0.049). The rate of spontaneous labor was higher in the successful TOLAC group, although it did not reach statistical significance. Conclusion: TOLAC is a farily safe procedure for selected pregnant women with one previous cesarean sections. It should be offered to all suitable pregnant women in order to reduce high CS rate and prevent complication associated with higher order repeat cesarean.
Archives of Gynecology and Obstetrics, 2018
Purpose Normal labor curves have not been assessed for women undergoing a trial of labor after cesarean delivery (TOLAC). This study examined labor patterns during TOLAC in relation to epidural analgesia use. Methods Retrospective cohort study of deliveries of women undergoing TOLAC at a single, academic, tertiary medical center. Length of first, second and third stages of labor was compared between 424 women undergoing TOLAC in the current labor with no previous vaginal delivery (VD) and 357 women with at least one previous VD and current TOLAC. Results Women in the TOLAC only group had significantly longer labors compared to women in the previous VD and TOLAC group. In both groups, women who underwent epidural analgesia had longer first and second stages of labor. In the TOLAC only group, more women who had epidural analgesia tended to deliver vaginally as compared to those who did not (P = 0.09). For women who delivered vaginally, the 95th percentile for the second stage duration with epidural was 3.40 h in the TOLAC only group and 2.3 h in the previous VD and TOLAC group. The 95th percentile for the second stage duration without epidural was 1.4 h in the TOLAC only group and 0.9 h in the previous VD and TOLAC group. Conclusions Operative intervention (instrumental delivery/cesarean delivery (CD)) might be considered for women attempting TOLAC after a 2-h duration of second stage without epidural and 3-h duration with epidural, with an hour less for women who also had previous VD.
Trial of labor after two cesarean sections: A retrospective case–control study
Journal of Obstetrics and Gynaecology Research, 2022
Aim: The objective of this study was to compare neonatal and maternal outcomes among women with two previous cesarean deliveries who undergo trial of labor after two cesarean section (TOLA2C) versus elective repeat cesarean delivery (ERCD). Our primary outcome was neonatal intensive care unit (NICU) admission. Secondary outcomes included APGAR score <7 at 5 min, TOLA2C success rate, uterine rupture, postpartum hemorrhage, maternal blood transfusion, maternal bowel and bladder injury, immediate postpartum infection, and maternal mortality. Methods: This retrospective cohort study was undertaken at a community medical center from January 1, 2008 to December 31, 2018. Inclusion criteria were women with a vertex singleton gestation at term and a history of two prior cesarean sections. Exclusion criteria included a previous successful TOLA2C, prior classical uterine incision or abdominal myomectomy, placenta previa or invasive placentation, multiple gestation, nonvertex presentation, history of uterine rupture or known fetal anomaly. Maternal and neonatal outcomes were assessed using Fisher exact test and Wilcoxon rank sum test. Results: A total of 793 patients fulfilled study criteria. There were no differences in neonatal intensive care unit admissions or 5-min APGAR scores <7 between the two groups. Sixty-eight percent of women who underwent TOLAC (N = 82) had a successful vaginal delivery. The uterine rupture rate was 1.16% (N = 1) in the TOLA2C group with no case of uterine rupture in the ERCD group. No difference in maternal morbidity was noted between the two groups. No maternal or neonatal mortalities occurred in either group. Conclusions: There was no difference in maternal or neonatal morbidity among patients in our study population with two previous cesarean sections who opted for TOLA2C versus ERCD.
Labor Outcomes With Increasing Number of Prior Vaginal Births After Cesarean Delivery
Obstetrics & Gynecology, 2008
OBJECTIVE: To estimate the success rates and risks of an attempted vaginal birth after cesarean delivery (VBAC) according to the number of prior successful VBACs. METHODS: From a prospective multicenter registry collected at 19 clinical centers from 1999 to 2002, we selected women with one or more prior low transverse cesarean deliveries who attempted a VBAC in the current pregnancy. Outcomes were compared according to the number of prior VBAC attempts subsequent to the last cesarean delivery. RESULTS: Among 13,532 women meeting eligibility criteria, VBAC success increased with increasing number of prior VBACs: 63.3%, 87.6%, 90.9%, 90.6%, and 91.6% for those with 0, 1, 2, 3, and 4 or more prior VBACs, respectively (P<.001). The rate of uterine rupture decreased after the first successful VBAC and did not increase thereafter: 0.87%, 0.45%, 0.38%, 0.54%, 0.52% (P.)30.؍ The risk of uterine dehiscence and other peripartum complications also declined statistically after the first successful VBAC. No increase in neonatal morbidities was seen with increasing VBAC number thereafter. CONCLUSION: Women with prior successful VBAC attempts are at low risk for maternal and neonatal complications during subsequent VBAC attempts. An increasing number of prior VBACs is associated with a greater probability of VBAC success, as well as a lower risk of uterine rupture and perinatal complications in the current pregnancy.
Journal of Maternal-Fetal and Neonatal Medicine, 2013
Objective: To compare infant mortality rates among women with a failed versus successful trial of labor after cesarean (TOLAC) following labor induction or stimulation. Study design: Using US linked birth and infant death cohort data (2000)(2001)(2002)(2003)(2004), we identified women who delivered non-anomalous singleton births at 34-41 weeks with TOLAC whose labors were induced or stimulated. Multivariable log-binomial regression models were fitted to estimate the association between TOLAC success and infant mortality. Results: Of the 164,113 women who underwent TOLAC, 41% were unsuccessful. After adjustment for potential confounding factors, a failed TOLAC was associated with a 1.4 fold (95% confidence interval [CI] 1.1, 1.7) increased risk of infant mortality. Conclusions: Among women undergoing labor induction or stimulation, a failed TOLAC is associated with higher likelihood of infant mortality.
Midwifery
Objective: Knowledge about labour characteristics of women achieving successful vaginal birth after caesarean section (VBAC) might be used to improve labour and birth management. This study examined sociodemographic and labour process-related factors regarding a) differences between countries, b) the comparison of successful VBAC with unplanned caesarean section, and c) predictors for the success of planned VBAC in three European countries. Design: We analysed observational data collected within the OptiBIRTH trial, a clusterrandomised controlled trial. Setting: Fifteen study sites in Ireland, Italy and Germany, five in each country. Participants: 790 participants going into labour for planned VBAC. Measurements: Descriptive statistics and random-effects logistic regression models were applied. Findings: The pooled successful VBAC-rate was 74.6%. Italy had the highest proportion of women receiving none of the four intrapartum interventions amniotomy (ARM), oxytocin, epidural or opioids (42.5% vs Ireland: 26.8% and Germany: 25.3%, p<0.001). Earlier performance of ARM was associated with successful VBAC (3.50 hrs vs 6.08 hrs, p=0.004). A positive predictor for successful vaginal birth was a previous vaginal birth (OR=3.73, 95% CI [2.17, 6.44], p<0.001). The effect of ARM increased with longer labour duration (OR for interaction term=1.06, 95% CI [1.004, 1.12], p=0.035). Higher infant birthweight (OR per kg=0.34, 95% CI [0.23, 0.50], p<0.001), ARM (reference spontaneous rupture of membranes (SROM), OR=0.20, 95% CI [0.11, 0.37], p<0.001) and a longer labour duration (OR per hour=0.93, 95% CI [0.90, 0.97], p<0.001) decreased the odds of a vaginal birth. Key conclusion: Women with a previous vaginal birth, an infant with a lower birth weight, SROM and a shorter labour duration were most likely to have a successful vaginal birth. If SROM did not occur, an earlier ARM increased the odds of a vaginal birth. Implication for practice: Labour progress should be accelerated by fostering endogenous uterine contractions. With slow labour progress and intact membranes, ARM might increase the chance of a vaginal birth.
Seminars in Perinatology, 2016
The cesarean delivery rate in the United States has risen steadily over the past five decades such that approximately one in three women now undergo cesarean section. The rise in repeat operations and accompanying decline in trial of labor after cesarean (TOLAC) have been major contributors to this phenomenon. The appropriate use of TOLAC continues to be a topic of interest with the recognition that most women with a history of prior cesarean are candidates for trial of labor. The NICHD MFMU Network Cesarean Registry conducted from 1999-2002 provided contemporary data concerning the risks and benefits of TOLAC which in turn have helped inform practitioners and women considering their options for childbirth following cesarean delivery.
American journal of obstetrics and gynecology, 2017
It is not well-characterized whether attempting operative vaginal delivery is a safe and effective alternative among women who undergo a trial of labor after cesarean delivery who are unable to complete second-stage labor with a spontaneous vaginal delivery. The purpose of this study was to compare maternal and neonatal outcomes that are associated with attempted operative vaginal delivery with those that are associated with second-stage repeat cesarean delivery without an operative vaginal delivery attempt among women who undergo a trial of labor after cesarean delivery. This is a retrospective secondary analysis of data from Cesarean Registry of the Eunice Kennedy Shriver National Institute of Child Health and Human Development Maternal-Fetal Medicine Units Network. Women who underwent a trial of labor after cesarean delivery who were at least 36 weeks gestation were eligible for analysis if they had a live, singleton, nonanomalous gestation in cephalic presentation and reached se...