UNASSIGNED: Vaginal birth after cesarean (VBAC) is generally regarded as a safe and viable birthing option for most women with prior cesarean delivery. Nonetheless, concerns about heightened risks of adverse maternal and perinatal outcomes have often dissuaded women from considering VBAC. This study aimed to assess the performance of an artificial intelligence (AI)-powered VBAC prediction system integrated into a decision-aid birth choice platform for shared decision-making (SDM).
UNASSIGNED: Employing a retrospective design, we collected medical records from a regional hospital in northern Taiwan from January 2019 to May 2023. To explore a suitable model for tabular data, we compared two prevailing modeling approaches: tree-based models and logistic regression models. We subjected the tree-based algorithm, CatBoost, to binary classification.
UNASSIGNED: Forty pregnant women with 347 records were included. The CatBoost model demonstrated a robust performance, boasting an accuracy rate of 0.91 (95% confidence interval (CI): 0.86-0.94) and an area under the curve of 0.89 (95% CI: 0.86-0.93), surpassing both regression models and other boosting techniques. CatBoost captured the data characteristics on the significant impact of gravidity and the positive influence of previous vaginal birth, reinforcing established clinical guidelines, as substantiated by the SHapley Additive exPlanations analysis.
UNASSIGNED: Using AI techniques offers a more accurate assessment of VBAC risks, boosting women\'s confidence in selecting VBAC as a viable birthing option. The seamless integration of AI prediction systems with SDM platforms holds a promising potential for enhancing the effectiveness of clinical applications in the domain of women\'s healthcare.

Labor after cesarean (LAC) remains an optional delivery method among healthy pregnant individuals. Exploring women\'s attitudes, preferences, reasons for previous cesarean delivery, and the incentives underlying pregnant individuals\' preferences could help us understand their choice of delivery mode. In this study we evaluated the preferences and attitudes of eligible pregnant women regarding participation in a LAC in Foshan, China.
A cross-sectional survey was conducted among 438 pregnant individuals with one prior cesarean delivery (CD) who attended their antenatal examination at a tertiary hospital in southern China, between November 1, 2018, and October 31, 2019. Information on demographic characteristics, obstetric data, preferences for LAC, and incentives for LAC were analyzed.
Overall, 85.4% (374/438) of women preferred LAC if they did not have contraindications before delivery, whereas 12.3% (54/438) refused and 2.3% (10/438) were unsure. Participants reported that the most important factors affecting their willingness to undergo LAC were safety indicators (i.e., \"ability of hospitals to perform emergency cesarean delivery\" [score of 9.28 ± 1.86]), followed by accessibility indicators (i.e., \"priority bed arrangements\" [score of 9.17 ± 1.84]). Logistic regression analysis indicated that neonatal wellbeing with the prior CD was an independent influencing factor (OR = 2.235 [95%CI: 1.115-4.845], p = 0.024) affecting willingness to access LAC in the subsequent pregnancy.
We found a high preference for LAC among pregnant individuals without contraindications before delivery in southern China. Healthcare providers need to ensure access to LAC and increase pregnant individuals\' LAC willingness through high-quality shared decsision-making in alignment with patient preferences.

To identify risk factors associated with the occurrence of complete uterine rupture (CUR) in comparison to partial uterine rupture (PUR) to further investigate to what extent a standardized definition is needed and what clinical implications can be drawn.
Between 2005 and 2017 cases with CUR and PUR at Charité University Berlin, Germany were retrospectively identified. Demographic, obstetric and outcome variables were analyzed regarding the type of rupture. Binary multivariate regression analysis was conducted to identify risk factors associated with CUR. In addition, the intended route of delivery (trial of labor after cesarean delivery (TOLAC) and elective repeat cesarean delivery (ERCD)), divided according to the type of rupture, was compared.
92 cases with uterine rupture were identified out of a total of 64.063 births (0.14%). Puerperal complications were more frequent in CUR (67.9 versus 41.1%, p = 0.021). Multiparity ≥ 3 was more frequent in CUR (31 versus 10.7%, p = 0.020). Factors increasing the risk for CUR were parity ≥ 3 (OR = 3.8, p = 0.025), previous vaginal birth (OR = 4.4, p = 0.011), TOLAC (OR = 6.5, p < 0.001) and the use of oxytocin (OR = 2.9, p = 0.036). After multivariate analysis, the only independent risk factor associated with CUR was TOLAC (OR = 7.4, p = 0.017).
TOLAC is the only independent risk factor for CUR. After optimized antenatal counselling TOLAC and ERCD had comparable short-term maternal and fetal outcomes in a high resource setting. A high number of previous vaginal births does not eliminate the risk of uterine rupture. A clear distinction between CUR and PUR is essential to ensure comparability among studies.

Women with a history of previous cesarean delivery must weigh the numerous potential risks and benefits of elective repeat cesarean delivery or trial of labor after cesarean delivery. Notably, 1 important risk of vaginal delivery is obstetrical anal sphincter injuries. Furthermore, the rate of obstetrical anal sphincter injuries is high among women undergoing vaginal birth after cesarean delivery. However, the risk of obstetrical anal sphincter injuries is not routinely included in the trial of labor after cesarean delivery counseling, and there is no tool available to risk stratify obstetrical anal sphincter injuries among women undergoing vaginal birth after cesarean delivery.
This study aimed to develop and validate a predictive model to estimate the risk of obstetrical anal sphincter injuries in the setting of vaginal birth after cesarean delivery population to improve antenatal counseling of patients regarding risks of trial of labor after cesarean delivery.
This study was a secondary subgroup analysis of the Maternal-Fetal Medicine Units Network Trial of Labor After Cesarean Delivery prospective cohort (1999-2002). We identified women within the Maternal-Fetal Medicine Units Network cohort with 1 previous cesarean delivery followed by a term vaginal birth after cesarean delivery. This Maternal-Fetal Medicine Units Network Vaginal Birth After Cesarean Delivery cohort was stratified into 2 groups based on the presence of obstetrical anal sphincter injuries, and baseline characteristics were compared with bivariate analysis. Significant covariates in bivariate testing were included in a backward stepwise logistic regression model to identify independent risk factors for obstetrical anal sphincter injuries and generate a predictive model for obstetrical anal sphincter injuries in the setting of vaginal birth after cesarean delivery. Internal validation was performed using bootstrapped bias-corrected estimates of model concordance indices, Brier scores, Hosmer-Lemeshow chi-squared values, and calibration plots. External validation was performed using data from a single-site retrospective cohort of women with a singleton vaginal birth after cesarean delivery from January 2011 to December 2016.
In this study, 10,697 women in the Maternal-Fetal Medicine Units Network Trial of Labor After Cesarean Delivery cohort met the inclusion criteria, and 669 women (6.3%) experienced obstetrical anal sphincter injuries. In the model, factors independently associated with obstetrical anal sphincter injuries included use of forceps (adjusted odds ratio, 5.08; 95% confidence interval, 4.10-6.31) and vacuum assistance (adjusted odds ratio, 2.64; 95% confidence interval, 2.02-3.44), along with increasing maternal age (adjusted odds ratio, 1.05; 95% confidence interval, 1.04-1.07 per year), body mass index (adjusted odds ratio, 0.99; 95% confidence interval, 0.97-1.00 per unit kg/m2), previous vaginal delivery (adjusted odds ratio, 0.19; 95% confidence interval, 0.15-0.23), and tobacco use during pregnancy (adjusted odds ratio, 0.59; 95% confidence interval, 0.43-0.82). Internal validation demonstrated appropriate discrimination (concordance index, 0.790; 95% confidence interval, 0.771-0.808) and calibration (Brier score, 0.047). External validation used data from 1266 women who delivered at a tertiary healthcare system, with appropriate model discrimination (concordance index, 0.791; 95% confidence interval, 0.735-0.846) and calibration (Brier score, 0.046). The model can be accessed at oasisriskscore.xyz.
Our model provided a robust, validated estimate of the probability of obstetrical anal sphincter injuries during vaginal birth after cesarean delivery using known antenatal risk factors and 1 modifiable intrapartum risk factor and can be used to counsel patients regarding risks of trial of labor after cesarean delivery compared with risks of elective repeat cesarean delivery.

China\'s universal two-child policy was released in October of 2015. How would this new policy influence the rate of overall cesarean delivery (CD) in China? The objective of this paper is to investigate the trend of overall CD rate with the increase of number of multiparous women based on a big childbirth center of China (a tertiary hospital) in 2016. In this study, 22 530 cases from the medical record department of a big childbirth center of China from January 1 to December 31 in 2016 were enrolled as research objects. Electronic health records of these selected objects were retrieved. According to the history of childbirth, the selected cases were divided into primiparous group containing 16 340 cases and multiparous group containing 6190 cases. Chi-square test was carried out to compare the rate of CD, neuraxial labor analgesia, maternity insurance between the two groups; t-test was performed to compare the in-hospital days and gestational age at birth between the two groups. Pearson correlation coefficient was used to evaluate the relationship among observed monthly rate of multiparas, overall CD rate, and Elective Repeat Cesarean Delivery (ERCD) rate. The results showed that the CD rate in multiparous group was 55.46%, which was higher than that in primiparous group (34.66%, P<0.05). The rate of neuraxial labor analgesia in multiparas group was 9.29%, which was lower than that in primiparas group (35.94%, P<0.05). However, the rate of maternity insurance was higher in multiparas group (57.00%) than that in primiparas group (41.08%, P<0.05). The hospital cost and in-hospital days in multiparas group were higher, and the gestational age at birth in multiparas group was lower than in primiparas group (P<0.05). The overall CD rate slightly dropped in the first 4 months of the year (P<0.05), then increased from 36.27% (April) to 43.21% (December) (P<0.05). The rate of multiparas women and ERCD had the same trend (P<0.05). There were linear correlations among the rate of overall CD, the rate of multiparas women and the rate of ERCD rate (P<0.05). With the opening of China\'s two-child policy, the increasing rate of overall CD is directly related with the high rate of ERCD. Trials of Labor After Cesarean Section (TOLAC) in safe mode to reduce overall CD rate are warranted in the future.

OBJECTIVE: To investigate factors influencing women\'s decisions to undergo trial of labor after cesarean (TOLAC) or elective repeat cesarean delivery (ERCD) based on the Multidimensional Health Locus of Control (MHLC), religious observance and family planning.
METHODS: Cross-sectional study of candidates for TOLAC or ERCD at two hospitals in Israel. Eligible women completed a demographic questionnaire and Form C of the MHLC scale.
RESULTS: The study included 197 women. Those who chose TOLAC (N = 101) were more religiously observant, wanted more children and had higher Internal and Chance health locus of control. Women who chose ERCD (N = 96) were more likely to be secular and had a higher health locus of control influenced by Powerful Others, notably physicians. Women not influenced by others were more likely to choose TOLAC.
CONCLUSIONS: A woman\'s choice of TOLAC or ERCD is influenced by her sense of control over her health, degree of religious observance and number of children desired. Healthcare providers can use this information to better understand, counsel and educate women regarding appropriate delivery decisions. Women who feel in control of their health, educated about delivery options and are less influenced by provider preference, might choose TOLAC; thus, reducing the rate of unnecessary ERCD.

OBJECTIVE: The trend of increasing cesarean section rates had evoked worldwide attention. Many approaches were introduced to diminish cesarean section rates. Vaginal birth after cesarean section (VBAC) is a route of delivery with diverse agreements. In this study, we try to reveal the world trend in VBAC and our experience of a 10-year period in a medical center in northern Taiwan.
METHODS: This is a retrospective study of all women who underwent elective repeat cesarean delivery or trial of labor after cesarean (TOLAC) following primary cesarean delivery by a general obstetrician-gynecologist in the Tamshui Branch of MacKay Memorial Hospital (Taipei, Taiwan) between 2006 and 2015. We excluded cases of preterm labor, two or more cesarean deliveries, and major maternal diseases. We compared the characteristics and outcomes between these groups.
RESULTS: We included 400 women with subsequent pregnancies who underwent elective repeat cesarean delivery or TOLAC during the study period. Among the study population, 112 women were excluded and 11 underwent repeat VBAC. A total of 204 (73.65%) cases underwent elective repeat cesarean delivery and 73 (26.35%) chose TOLAC. The rate of successful VBAC among the women who chose TOLAC was 84.93%.
CONCLUSIONS: With respect to maternal and fetal safety, and success rates and adverse effects of VBAC, the results of this study are promising and compatible with the global data. It shows that a trial of VBAC can be offered to pregnant women without contraindications with high success rates.

Objective We sought to identify factors influencing a woman\'s decision to have an elective repeat cesarean delivery (ERCD) versus vaginal birth after cesarean (VBAC). Methods and Materials A prospective study at two academic medical centers of women with one prior cesarean, and no contraindication to a trial of labor, delivered by ERCD from October 2013 to June 2014. Participants completed anonymous surveys during their delivery hospitalization. Counseling was considered adequate if women reported being counseled, recalled being quoted a VBAC success probability, and this probability was within 20% of that derived from an established VBAC success prediction model. Participants were also asked why they chose ERCD. Results Of 68 participants, only 8 (11.8%) had adequate counseling. Of those with inadequate counseling, 21.7% did not recall being counseled, 63.3% were not quoted a chance of success, and 60.0% had more than a 20% discrepancy between their recalled and predicted success rates. Eighteen women were calculated to have more than 70% chance of successful VBAC. Of these, 16 (88.9%) were not adequately counseled. Conclusion Most women were inadequately counseled about delivery options. The most important factors influencing the choice of ERCD over VBAC were patient preferences, risk for fetal injury, and perceived physician preference.

BACKGROUND: We examined whether or not the Japanese pregnant women with a history of a cesarean section have the knowledge about the benefits and harms of trial of labor after cesarean (TOLAC) and elective repeat cesarean delivery (ERCD).
METHODS: We reviewed the obstetric records of 121 Japanese women with a prior cesarean section who visited our hospital for reservation of their second delivery between January and December 2013.
RESULTS: Forty-five (37%) of them wanted to perform TOLAC at the first interview. Of these, 14 women (31%) with a history of an urgent cesarean chose TOLAC because of the insufficient anesthetic effect during cesarean, while 11 women (24%) with a history of an elective cesarean did not have the knowledge of the risks of TOLAC and urgent cesarean. Nineteen of those (76%) selected ERCD following the counseling.
CONCLUSIONS: Some Japanese pregnant women with TOLAC hope seemed to have insufficient knowledge about the benefits and harms of TOLAC and ERCD. Therefore, the improvement of the process of counseling and decision making may be needed for pregnant women with a history of a cesarean section in Japan.

Pregnant women who had a previous cesarean birth must choose whether to have a repeat cesarean or to attempt a vaginal birth. Many of these women are candidates for a trial of labor. Current practice guidelines recommend that women should be thoroughly counseled during prenatal care about the benefits and harms of both a trial of labor after cesarean (TOLAC) and an elective repeat cesarean delivery and be offered the opportunity to make an informed decision about mode of birth in collaboration with their provider. The purpose of this article is to improve the process of counseling, decision making, and informed consent by increasing health care providers\' knowledge about the essential elements of shared decision making. Factors that affect the decisions to be made and concepts that are critical for effective counseling are explored, including clinical considerations, women\'s perspectives, decision-making models, health literacy and numeracy, communicating risk, and the use of decision aids. Issues related to birth sites for TOLAC are also discussed, including access, safety, refusal of surgery, and clinical management.