OBJECTIVE: The current study focused on predicting future trends in obstetrics by examining obstetricians\' approaches to specific challenging vaginal delivery that require special experience, such as breech presentation, macrosomic fetus, twin pregnancy, and vacuum use, compared with their residency training experience.
METHODS: The cross-sectional study was conducted in two phases. The first phase was qualitative and the second phase was quantitative. The \"interview\" and \"survey\" techniques served as data collection tools. In total, 20 obstetricians participated in the interviews, and 400 obstetricians took part in the survey. Data from the interviews were analyzed using the Maxqda 2020 qualitative data analysis program, and survey data were analyzed using SPSS version 25.0.
RESULTS: Over the past 2 decades, there has been a gradual shift from vaginal deliveries to cesarean deliveries in cases involving breech presentation, macrosomic fetus, twin pregnancy, and vacuum use. While medicolegal concerns are undeniable, the prevalent belief among obstetricians that cesarean delivery is safer than vaginal delivery significantly influences this trend. Comparatively, young obstetricians often complete their residency training without acquiring sufficient knowledge and skills in vaginal delivery.
CONCLUSIONS: Young obstetricians currently lack adequate experience in managing vaginal deliveries for breech presentation, macrosomic fetus, twin pregnancy, and vacuum use. This experience is at risk of disappearing entirely within the next decade as senior obstetricians retire. Policymakers should take this into consideration when shaping future healthcare policies.

BACKGROUND: Over the last several decades, cesarean delivery has been recommended as the safest mode of delivery for breech presentations. The purpose of this study was to evaluate the outcomes of planned vaginal births with planned cesarean births in breech presenting fetuses.
METHODS: This retrospective population-based cohort study utilized data from the United States\' Period Linked Birth-Infant Death Public Use Files from 2008 to 2017. All term singleton breech deliveries of a live baby without congenital anomalies were identified (n = 546,842) and divided into two cohorts: women who had a planned vaginal birth (n = 116,828), and women who had a planned cesarean section (n = 430,014). Multivariate logistic regression models, adjusted for maternal baseline characteristics, examined the associations between the planned delivery method and neonatal outcomes.
RESULTS: It was observed that 26.14 % of the planned vaginal birth cohort had a vaginal delivery. In adjusted analyses, undergoing a planned vaginal birth for breech delivery was associated with an increased risk of adverse neonatal outcomes including infant death, OR 1.32, 95 % CI 1.16-1.52, admission to NICU,1.23, 1.19-1.27, ventilation support at 〈 6 h of life, 1.47, 1.42-1.52, ventilation support at 〉 6 h of life, 1.19, 1.08-1.31, and Apgar score of ≤3 at 5 min, 2.27, 2.06-2.50.
CONCLUSIONS: In women carrying fetuses in breech presentation, having a planned vaginal birth had a low success rate and was associated with increased risk of neonatal morbidity and mortality. Women should be carefully counselled on the risks associated with breech vaginal delivery as well as the low success rate of vaginal delivery.

OBJECTIVE: Investigate maternal and neonatal outcomes associated with breech presentation in planned community births in the United States, including outcomes associated with types of breech presentation (i.e., frank, complete, footling/kneeling).
METHODS: Secondary analysis of prospective cohort data from a national perinatal data registry (MANA Stats).
METHODS: Planned community birth (homes and birth centers), United States.
METHODS: Individuals with a term, singleton gestation (N = 71,943) planning community birth at labor onset.
METHODS: Descriptive statistics to calculate associations between types of breech presentation and maternal and neonatal outcomes.
METHODS: Maternal: intrapartum/postpartum transfer, hospitalization, cesarean, hemorrhage, severe perineal laceration, duration of labor stages and membrane rupture Neonatal: transfer, hospitalization, NICU admission, congenital anomalies, umbilical cord prolapse, birth injury, intrapartum/neonatal death.
RESULTS: One percent (n = 695) of individuals experienced breech birth (n = 401, 57.6% vaginally). Most fetuses presented frank breech (57%), with 19% complete, 18% footling/kneeling, and 5% unknown type of breech presentation. Among all breech labors, there were high rates of intrapartum transfer and cesarean birth compared to cephalic presentation (OR 9.0, 95% CI 7.7-10.4 and OR 18.6, 95% CI 15.9-21.7, respectively), with no substantive difference based on parity, planned site of birth, or level of care integration into the health system. For all types of breech presentations, there was increased risk for nearly all assessed neonatal outcomes including hospital transfer, NICU admission, birth injury, and umbilical cord prolapse. Breech presentation was also associated with increased risk of intrapartum/neonatal death (OR 8.5, 95% CI 4.4-16.3), even after congenital anomalies were excluded.
CONCLUSIONS: All types of breech presentations in community birth settings are associated with increased risk of adverse neonatal outcomes. These research findings contribute to informed decision-making and reinforce the need for breech training and research and an increase in accessible, high-quality care for planned vaginal breech birth in US hospitals.

OBJECTIVE: To study neonatal and maternal outcomes associated with routine maneuvers in breech vaginal delivery at term.
METHODS: This was a secondary analysis of the multicenter PREMODA observational prospective study in France and Belgium. We included women with vaginal breech delivery, excluding those who underwent maneuvers to resolve a dystocic delivery. Maternal data and characteristics of labor, in addition to neonatal and maternal outcomes, were recorded. We defined two groups according to mode of delivery; breech vaginal delivery with or without routine maneuvers, and we compared the variables between the groups. To assess the factors associated with adverse perinatal outcomes, a multivariate logistic regression with adjustment for confounders was performed.
RESULTS: Of the 2502 women with planned vaginal deliveries, 1794 were delivered vaginally, 606 of whom were excluded from the study due to maneuvers performed for dystocia. A total of 25 other patients were excluded as a result of missing data. A total of 537 women were included in the routine maneuvers group and 626 women in the no maneuvers group. Adverse perinatal outcome was similar for the two groups (4.5% vs 5.0%, P = 0.65) and no neonatal deaths were reported. Third degree perineal tear and postpartum hemorrhage >1 L rates were comparable for the two groups. After adjustment, the factors associated with adverse perinatal outcomes were primiparity and birth weight <2500 g.
CONCLUSIONS: Routine maneuvers were not associated with an increase in neonatal morbidity in our population.

BACKGROUND: An infant\'s presentation at delivery may be an early indicator of developmental differences. Non-vertex presentation (malpresentation) complicates delivery and often leads to caesarean section, which has been associated with neurodevelopmental delays, including autism spectrum disorder (ASD). However, malpresentation could be an early sign of an existing developmental problem that is also an upstream factor from caesarean delivery. Little research has been done to investigate the association between malpresentation and ASD.
OBJECTIVE: We examine the association between malpresentation at delivery and ASD and whether this association differs by gestational age.
METHODS: We used data from the Study to Explore Early Development (SEED), a multi-site, case-control study of children with ASD compared to population controls. The foetal presentation was determined using medical records, birth records and maternal interviews. We defined malpresentation as a non-vertex presentation at delivery, then further categorised into breech and other malpresentation. We used multivariable logistic regression to estimate the adjusted odds ratio (aOR) for the association between malpresentation and ASD.
RESULTS: We included 4047 SEED participants, 1873 children with ASD and 2174 controls. At delivery, most infants presented vertex (n = 3760, 92.9%). Malpresentation was associated with higher odds of ASD (aOR 1.31, 95% confidence interval [CI] 1.02, 1.68) after adjustment for maternal age, poverty level, hypertensive disorder and smoking. The association was similar for breech and other types of malpresentation (aOR 1.28, 95% CI 0.97, 1.70 and aOR 1.40, 95% CI 0.87, 2.26, respectively) and did not differ markedly by gestational age.
CONCLUSIONS: Malpresentation at delivery was modestly associated with ASD. Early monitoring of the neurodevelopment of children born with malpresentation could identify children with ASD sooner and enhance opportunities to provide support to optimise developmental outcomes.

OBJECTIVE: Lack of opportunity for breech training and clinical experience reduced professional confidence and expertise in supporting vaginal breech birth.
BACKGROUND: OptiBreech collaborative care is a care pathway for breech presentation at term that aims to enable improve safety through person-centred care and improved training opportunities for maternity professionals, within dedicated clinics and intrapartum support. In feasibility work, barriers and facilitators to team implementation were observed by team members.
OBJECTIVE: This study sought to describe factors affecting optimal future implementation and safety of OptiBreech care.
METHODS: Semi-structured interviews were conducted with staff members at 13 OptiBreech trial sites (17 midwives and 4 obstetricians, n=21), via video conferencing software. The Theoretical Domains Framework (TDF) was used to identify factors impacting team implementation. Themes identified in the TDF were refined in reflexive discussion and grouped into key facilitators, key barriers, and dynamic factors (which span both barriers and facilitators). The interviews were then coded, analysed, and interpreted according to the refined framework.
RESULTS: The key facilitators were broadly categorised within skill development, beliefs about capabilities, and social support from the wider multidisciplinary team. Key barrier categories were resources, social obstacles, and fears about consequences. Dynamic factor categories were individual responsibility, training, and attending births.
CONCLUSIONS: While some factors affecting implementation were specific to the individuals and cultures of certain Trusts, recommendations emerged from analysis that are more widely applicable across multiple settings. These should be considered going forward for future service implementation, and in the next stage of OptiBreech clinical trials.

OBJECTIVE: The aims of this study were to assess whether a regional simulation-based training course in external cephalic version (ECV) would lead to the adoption of this technique in hospitals where it was not previously practiced, and to improve success rates in those already performing it.
METHODS: This was an intervention study where two specialists in obstetrics and gynecology from 10 Portuguese public maternity hospitals attended a structured simulation-based training in ECV. Hospitals were categorized based on whether ECV was conducted prior to the training program, and on their annual number of deliveries. Main outcomes were the number of ECVs performed in the 2 years before and after the course, and their success rates.
RESULTS: Implementation of ECV was achieved in four additional hospitals during the 2 years following the course. Among the three hospitals already performing ECV and able to report their data, no significant differences in success rates were observed in the 2 years following the course (45.6% vs. 47.9%, P = 0.797). After a successful ECV, 77.7% of women had a vaginal delivery.
CONCLUSIONS: A regional simulation-based training course in ECV led to an increase in the number of hospitals implementing the technique in the subsequent 2 years, but it did not impact the success rates in centers where it was already performed. This study highlights the potential of simulation-based courses in ECV, as well as the need to improve patients´ access to the technique and to centralize ECV services at a regional level.

OBJECTIVE: The debate about the safest birth mode for breech presentation at term remains unresolved. The comparison of a vaginal breech birth (VBB) with an elective caesarean section (CS) regarding fetal outcomes favors the CS. However, the question of whether attempting a VBB is associated with poorer fetal outcomes is examined in this study. Additionally, the study evaluates factors contributing to a successful VBB and illustrates possible errors in VBB management.
METHODS: We performed a retrospective analysis of term breech births over 15 years in a Perinatal Center Level I regarding fetal, maternal, and obstetric outcomes by comparing successful with unsuccessful VBB attempt and all attempted VBB vs. CS including a multivariate analysis of predictors for a successful VBB. A root cause analysis of severe adverse events (SAE) was conducted to evaluate factors leading to poorer fetal outcomes in VBB.
RESULTS: Of 863 breech cases, in 78 % a CS was performed and in 22 % a VBB was attempted, with 57 % succeeding. Comparing successful with unsuccessful VBB attempts, successful VBB showed significantly lower maternal blood loss (p < 0.001) but poorer umbilical arterial pH (UApH) (p < 0.001), while other fetal outcome parameters showed no significant differences. Predictive factors for a successful VBB attempt were a body mass index (BMI) below 30.0 kg/m2 (p = 0.010) and multiparity (p = 0.003). Comparing all attempted VBB to CS, maternal blood loss was significantly higher in CS (p < 0.001), while fetal outcomes were significantly worse in VBB attempts, included poorer Apgar scores (p < 0.001), poorer UApH values (p < 0.001), higher transfer rate to the Neonatal Intensive Care Unit (NICU) (p < 0.001) and higher rate of respiratory support in the first 24 h (p = 0.003).
CONCLUSIONS: The failed attempt of VBB indicates significantly worse UApH without lower Apgar scores or higher transfer rate to the NICU. The likelihood of a successful VBB is 9% lower with obesity and 2.5 times higher in multiparous women. Attempting a VBB should include detailed pre-labor counseling, regarding predictive success factors, an experienced team, and consistent management during birth.

Developmental dysplasia of the hip (DDH) is a broad-spectrum disorder. Early diagnosis and treatment are important for improved prognosis and a lower risk of long-term complications. Selecting high-risk infants is important for the early diagnosis of DDH using ultrasonography; however, there are no standard international guidelines. This study aimed to identify the usefulness of universal ultrasound before hospital discharge in breech-born neonates and proposes selective ultrasound for high-risk patients. A retrospective chart review was conducted to identify breech-born neonates who underwent hip ultrasonography before discharge for the detection of DDH between 2019 and 2023. Patients were categorized into DDH and non-DDH groups according to the ultrasound results. We compared sex, gestational age, birth weight, first-born status, twin pregnancy, associated anomalies, presence of symptoms, physical examination results, and timing of the first hip ultrasound. The medical records of the mothers were reviewed to identify the amount of amniotic fluid and duration of breech presentation. This study included 102 patients, of whom 62 and 40 were assigned to the non-DDH and DDH groups, respectively. Congenital anomalies, positive symptoms, and positive physical examination results were significant risk factors. However, female sex, first-born status, and oligohydramnios were not statistically significant. The duration of breech presentation during pregnancy was not significant. Additionally, the risk of Pavlik harnesses was higher in patients who underwent a positive physical examination. Universal ultrasonography before discharge is not recommended for the early diagnosis of DDH in all breech-born neonates because of the high rate of overdiagnosis. We recommend that ultrasonography be performed in patients with congenital anomalies, except for foot problems, or in those with a positive physical examination conducted by trained specialists.

OBJECTIVE: Obesity is a worldwide and growing issue affecting women in childbearing age, complicating surgical procedures as well as pregnancy. Through a reduction of not necessarily required cesarean deliveries-for instance in pregnancies with breech presentation-obesity mediated and surgery-associated morbidity might be contained. Date on the impact of maternal BMI in vaginally attempted breech delivery is not existing. To give insight into whether an elevated BMI leads to an increased perinatal morbidity in vaginally intended deliveries out of breech presentation, we analyzed delivery outcome of laboring women with a singleton baby in breech presentation with overweight and obesity (BMI ≥ 25 kg/m2) in comparison to women with a BMI of below 25 kg/m2.
METHODS: Based on data from January 2004 to December 2020, a cohort study was performed on 1641 women presenting with breech presentation at term (> 37 weeks). The influence of maternal BMI on perinatal outcome was analyzed with Chi2 testing for group differences and logistic regression analysis. Patients with a hyperglycemic metabolism were excluded from the study.
RESULTS: Fetal morbidity was not different when patients with a BMI of ≥ 25 kg/m2 (PREMODA morbidity score 2.16%) were compared to patients with a BMI of below 25 kg/m2 (1.97%, p = 0.821). Cesarean delivery rates were significantly higher in overweight and obese women with 43.9% compared to 29.3% (p < 0.0001). BMI and cesarean delivery were significantly associated in a logistic regression analysis (Chi2 coefficient 18.05, p < 0.0001). In successful vaginal deliveries out of breech presentation, maternal perineal injury rates (vaginal birth in normal-BMI women 48.4%; vaginal birth in overweight and obese women: 44.2%; p = 0.273) and rates of manually assisted delivery (vaginal birth in normal-BMI women: 44.4%; vaginal birth in obese and overweight women: 44.2%; p = 0.958) were not different between BMI groups.
CONCLUSIONS: Obesity and overweight are not associated with peripartum maternal or newborn morbidity in vaginally attempted breech delivery, if the patient cohort is thoroughly selected and vaginal breech delivery is in an upright maternal position. Reduction of cesarean delivery rates, especially in overweight and obese women might, have an important positive impact on maternal and newborn morbidity.