Corticotropin-releasing hormone signaling from prefrontal cortex to lateral septum suppresses interaction with familiar mice.

Social preference, the decision to interact with one member of the same species over another, is critical to optimize social interactions. Thus, adult rodents favor interacting with novel conspecifics over familiar ones, but whether this social preference stems from neural circuits facilitating interactions with novel individuals or suppressing interactions with familiar ones remains unknown. Here, we identify neurons in the infra-limbic area (ILA) of the mouse prefrontal cortex that express the neuropeptide corticotropin-releasing hormone (CRH) and project to the dorsal region of the rostral lateral septum (rLS). We show how release of CRH during familiar encounters disinhibits rLS neurons, thereby suppressing social interactions with familiar mice and contributing to social novelty preference. We further demonstrate how the maturation of CRH expression in ILA during the first 2 post-natal weeks enables the developmental shift from a preference for littermates in juveniles to a preference for novel mice in adults.

A comparison of anatomic and cellular transcriptome structures across 40 human brain diseases.

Genes associated with risk for brain disease exhibit characteristic expression patterns that reflect both anatomical and cell type relationships. Brain-wide transcriptomic patterns of disease risk genes provide a molecular-based signature, based on differential co-expression, that is often unique to that disease. Brain diseases can be compared and aggregated based on the similarity of their signatures which often associates diseases from diverse phenotypic classes. Analysis of 40 common human brain diseases identifies 5 major transcriptional patterns, representing tumor-related, neurodegenerative, psychiatric and substance abuse, and 2 mixed groups of diseases affecting basal ganglia and hypothalamus. Further, for diseases with enriched expression in cortex, single-nucleus data in the middle temporal gyrus (MTG) exhibits a cell type expression gradient separating neurodegenerative, psychiatric, and substance abuse diseases, with unique excitatory cell type expression differentiating psychiatric diseases. Through mapping of homologous cell types between mouse and human, most disease risk genes are found to act in common cell types, while having species-specific expression in those types and preserving similar phenotypic classification within species. These results describe structural and cellular transcriptomic relationships of disease risk genes in the adult brain and provide a molecular-based strategy for classifying and comparing diseases, potentially identifying novel disease relationships.

Brain-wide perception of the emotional valence of light is regulated by distinct hypothalamic neurons.

Salient sensory stimuli are perceived by the brain, which guides both the timing and outcome of behaviors in a context-dependent manner. Light is such a stimulus, which is used in treating mood disorders often associated with a dysregulated hypothalamic-pituitary-adrenal stress axis. Relationships between the emotional valence of light and the hypothalamus, and how they interact to exert brain-wide impacts remain unclear. Employing larval zebrafish with analogous hypothalamic systems to mammals, we show in free-swimming animals that hypothalamic corticotropin releasing factor (CRFHy) neurons promote dark avoidance, and such role is not shared by other hypothalamic peptidergic neurons. Single-neuron projection analyses uncover processes extended by individual CRFHy neurons to multiple targets including sensorimotor and decision-making areas. In vivo calcium imaging uncovers a complex and heterogeneous response of individual CRFHy neurons to the light or dark stimulus, with a reduced overall sum of CRF neuronal activity in the presence of light. Brain-wide calcium imaging under alternating light/dark stimuli further identifies distinct and distributed photic response neuronal types. CRFHy neuronal ablation increases an overall representation of light in the brain and broadly enhances the functional connectivity associated with an exploratory brain state. These findings delineate brain-wide photic perception, uncover a previously unknown role of CRFHy neurons in regulating the perception and emotional valence of light, and suggest that light therapy may alleviate mood disorders through reducing an overall sum of CRF neuronal activity.

Risk perception in pregnancy: Patient-physician discrepancies, information consumption, and mental health outcomes.

BACKGROUND: Little is known about the scope, causes, or consequences of risk overestimation. Our aim was to assess whether risk perceptions in pregnancy are heightened for a range of behaviors, related to consumption of health information, and associated with mental health indices. METHODS: One hundred and fifty members of the American College of Obstetricians and Gynecologists were invited to participate in a patient-physician study, and 37% returned surveys. Physicians (n = 73) and prenatal patients (n = 388) rated the perceived safety of exposure to 40 behaviors during pregnancy. A subset of prenatal patients completed a postpartum follow-up survey (n = 103). RESULTS: Statistical comparison of means indicated that patients overestimated the risk of 30 behaviors. Anchoring patient ratings against average physician ratings, 87.8% of total discrepancy scores reflected net risk overestimation. Greater risk overestimation was associated with higher consumption of pregnancy-related health information, but was not associated with anxiety or depression symptoms. CONCLUSIONS: Risk perceptions may be heightened across a range of behaviors during pregnancy, even when empirical evidence of risk is absent. Information consumption could be associated with risk estimation, but causality and directionality have not been established. Further research on risk perceptions could have implications for prenatal care.

Lives Cut Short: suicide among adolescent females.

Suicide is a worldwide public health issue, and suicide ideation and behavior among adolescents, females in particular, have been increasing. Focusing on the risk factors that are unique to adolescents and adolescent females can help tailor and inform prevention strategies. There are unique biological, psychological, social, and societal factors that contribute to suicide ideation and behavior among adolescent females. Some of these include hormonal fluctuations and sensitivity, developing brain systems, impacts of social media, maladaptive coping, and peer influence. These changes do not occur in a vacuum and have recently been impacted by the COVID-19 pandemic, which has been associated with increased social isolation and decreased mental health. By identifying how these factors coalesce and interact to drive suicide ideation and behavior, we can derive potential solutions to this problem. Given the variability in individuals, families, and communities, and the interacting and reinforcing nature of these risk factors, a multi-pronged approach that incorporates multiple interventions and involves families, schools, and communities is needed.

Obstetric anal sphincter injuries and other delivery trauma: a US national survey of obstetrician-gynecologists.

INTRODUCTION AND HYPOTHESIS: Obstetric lacerations complicate the majority of deliveries. The application of standardized guidelines for assessing delivery trauma has not been assessed thoroughly in the United States. We recently identified gaps in US midwives' clinical assessment of delivery trauma. We conducted a cross-sectional national survey of practicing obstetricians in the USA to characterize their classification of obstetric lacerations. We hypothesized that attending obstetricians' identification and diagnosis of delivery trauma would be similar to our findings for midwives with frequent inaccuracy. METHODS: We recruited clinically active obstetricians through the Pregnancy-Related Care Research Network. We asked participants to classify (from written definitions) and diagnose (from standard illustrations) common forms of vaginal delivery trauma using the widely employed perineal laceration degree system. We performed bivariate analysis of high- and low-scoring respondents and logistic regression to model characteristics associated with higher diagnostic accuracy. RESULTS: Of the 162 respondents who started the survey, 76% (123) were included for analysis (22% of solicited emails). Overall, we found wide variation in response accuracy with as few as 62% of respondents correctly classifying certain types of lacerations. Only 49 out of 123 (40%) use the Sultan third-degree subclassification system and 67 out of 123 (52%) continue to use the midline/median approach for episiotomies. Providers reporting fewer deliveries per month and fewer publicly insured patients earned higher scores. CONCLUSIONS: Obstetricians in a nationally representative US perinatal provider network inconsistently identify perineal and nonperineal lacerations. We found important clinical knowledge gaps, suggesting that vaginal delivery diagnoses in obstetric quality studies and pelvic floor research might be inaccurate.

Provider Attitudes on Regionalization of Maternity Care: A National Survey.

OBJECTIVES: To explore provider perspectives surrounding national guidelines proposing regionalization of maternal care. METHODS: An 18-item survey focused on provider attitudes and practices surrounding regionalized maternity care was administered to a national sample of practicing obstetricians. We classified respondants reporting less than 500 annual deliveries at their hospital as low-volume providers and those practicing at hospitals performing 500 or more annual deliveries as high-volume providers. We compared responses according to hospital delivery volume using univariate analysis. RESULTS: Of the 497 physicians surveyed, 278 people responded (56%) with 229 currently practicing obstetrics. The median annual delivery volume amongst respondents was 200 (interquartile range 100-1900) with 146 (63.7%) practicing in low-volume delivery centers. The need for medical or surgical expertise was the most commonly reported indication for maternal transfer (19.7%) and independent of practice setting. Ninety-six percent of providers agreed with the concept of regionalization, but respondents in high-volume centers reported higher familiarity with the levels of maternal care paradigm compared to their low-volume counterparts (81.9% v. 62.3%, p < 0.01). Financial factors (60.3%), geography (48.9%), and access to care (43.2%) were the most cited major barriers to regionalization. High-volume providers endorsed geography as a major barrier more often than low-volume providers (57.8% v. 43.8%, p = 0.04). CONCLUSIONS FOR PRACTICE: Obstetricians may agree with the concept of regionalized maternity care but also identify significant barriers to its implementation. Early and frequent engagement of providers reflecting the diversity of delivery centers in a region is a simple but necessary step in any attempts to designate levels of maternal care.

Depression during perimenopause: the role of the obstetrician-gynecologist.

Depression in women is more common during perimenopause (the transition to menopause) than at other times in the life cycle. Symptoms of depression may be different in perimenopausal women compared to younger or older women, and are often dismissed as part of normal menopause. This is an expert narrative review. There are several evidence-based screening modalities which can be integrated into routine women's health visits, and can facilitate distinguishing between depression and normal perimenopausal symptoms. There is emerging evidence regarding the effect of hormonal changes on the development of perimenopausal depression and its optimal treatment, though critical research gaps remain. Obstetrician-gynecologists and other primary care providers play a vital role in the detection and management of depression in women. Providers caring for women during perimenopause have a unique opportunity to diagnose depression in their patients and identify appropriate treatment options.

Obstetrician-gynecologist and patient factors associated with intimate partner violence screening in a clinical setting.

Screening for intimate partner violence is recommended by the medical community. This study investigated obstetrician-gynecologists' intimate partner violence screening patterns and physician and patient factors associated with screening. Four hundred obstetricians-gynecologists completed the Physician Readiness to Manage Intimate Partner Violence Survey between December 2014 and July 2015. Their patients completed the Patient Safety and Satisfaction Survey. Hierarchical generalized linear modeling analyzed physician and patient variables related to the likelihood of being screened. Forty-four physicians responded. The viable patient response rate was 81.3 percent (n = 894) of patients from included physicians. Less than half (43.2 percent) of physicians reported screening during annual exams. There was a statistically significant difference for patient race/ethnicity (p < .03) and the number of previous doctor visits (p < .03) with not being screened. These patient-level variables accounted for approximately 68.3 percent of the variance screening odds. There was no significant difference (p < .10) between physicians' perceived preparation, knowledge, and attitudes for not being screened. The hierarchical generalized linear modeling analysis showed a trend for physicians with a high-perceived preparation for screening was related to initial visits. This study identified that obstetrician-gynecologists do not routinely screen for IPV and race/ethnicity and number of visits are factors in screening for intimate partner violence.

Survey of Obstetrician-gynecologists in the United States About Trichomoniasis, 2016.

PURPOSE: Trichomoniasis is the most prevalent nonviral sexually transmitted infection (STI) in the United States. It can present with vaginitis in women and urethritis in men, but is most often asymptomatic or occurs with minimal symptoms. It is associated with other STIs, adverse pregnancy outcomes and pelvic inflammatory disease. For these reasons, health care provider awareness of trichomoniasis is of public health importance. METHODS: To assess practitioner knowledge, attitudes, and practices concerning trichomoniasis management, the American College of Obstetricians and Gynecologists conducted an online survey in 2016 of its members, and we analyzed results from 230 respondents. RESULTS: We note discrepancies between practice and recommendations among surveyed providers: a minority of respondents routinely screen human immunodeficiency virus (HIV)-positive patients for trichomoniasis (10.7%, "most of the time"; 95% confidence interval [CI], 6.7-15.8; 33.0%, "always"; 95% CI, 26.5%-40.0%), treat trichomoniasis in HIV-positive patients with the recommended dose of metronidazole 500 mg twice a day for 7 days (25.8%; 95% CI, 20.0%-32.3%), or retest patients diagnosed with trichomoniasis 3 months after treatment (9.6%; 95% CI, 6.1%-14.3%). Only 29.0% (95% CI, 23.0%-35.5%) retreat with metronidazole 500 mg twice a day for 7 days in patients who have failed prior treatment. CONCLUSIONS: Screening for and treatment of trichomoniasis in HIV-positive patients, and retesting and retreatment for trichomoniasis in the general population appear to be suboptimal. Continuing education for providers is needed for this common but "neglected" STI.

Practice Variation in Antenatal Steroid Administration for Anticipated Late Preterm Birth: A Physician Survey.

OBJECTIVE: The objective of this study was to measure knowledge and practice variation in late preterm steroid use. STUDY DESIGN: Electronic survey of American College of Obstetricians and Gynecologists (ACOG) members about data supporting the ACOG/Society for Maternal-Fetal Medicine (SMFM) recommendations and practice when caring for women with anticipated late preterm birth (PTB), 340/7 to 366/7 weeks. RESULTS: Of 352 administered surveys, we obtained 193 completed responses (55%); 82.5% were generalist obstetrician-gynecologists (OB/GYNs), and 42% cared for women with anticipated late PTB at least weekly. Most believed that late preterm steroids provided benefit by reducing respiratory distress syndrome (93%), transient tachypnea of the newborn (83%), and neonatal intensive care unit admission (82%). More than half administered late preterm steroids to women with multiple gestations (73%), and pregestational diabetes (55-80%) depending on glycemic control. OB/GYNs administered steroids to insulin-dependent and poorly controlled diabetics more often than MFMs (75 vs. 46% and 59 vs. 37% respectively, p < 0.05 for both). While providers believed there was increased maternal hyperglycemia (88%) and neonatal hypoglycemia (59%), 88% believed neonatal respiratory benefits outweighed these risks. Respondents agreed research is needed to determine who are appropriate candidates (77%) and how to minimize adverse outcomes (82%). CONCLUSION: Most providers are administering late preterm steroids to all women, even those populations who have been excluded from previous trials. Despite widespread use, providers believe more research is needed to optimize management.

Role of Physician Gender in the Modern Practice of Obstetrics and Gynecology: Do Obstetrician-Gynecologists Perceive Discrimination from their Sex?

OBJECTIVES: It is unclear whether obstetrician-gynecologists (OBGYNs) experience gender discrimination as a result of patient and organizational gender preferences. Our objective was to evaluate whether the gender preference for OBGYNs resulted in perceptions of discrimination by the physician while simultaneously assessing their patients' views for choosing their OBGYN. METHODS: A survey assessed whether OBGYNs' perceptions of patients and employers' preferences for gender in selecting an OBGYN affected their clinical practice and resulted in feelings of discrimination. Providers' patients simultaneously completed a survey to explore the role of gender in the selection of their OBGYN. The Mann-Whitney U test was used for comparisons. A P < 0.05 was considered statistically significant. RESULTS: Thirty-four physicians (97% response rate) and 803 patients (81% response rate) completed the survey. The majority of male physicians agreed that their gender negatively affects their patient practice volume (60%), whereas no female physicians agreed with this statement (0%, P < 0.01). Female physicians were more likely to agree (46%) that they are discriminated against because of gender in terms of salary as compared with male physicians (20%, P = 0.049), however. Although more women who see a female OBGYN (compared with those who see a male OBGYN) perceive that their physician's gender is important to them (62% versus 20%, P < 0.01), the most frequent reason all women chose their OBGYN is the "rating" of the physician. CONCLUSIONS: Female and male OBGYNs perceive bias because of their gender; however, the former is because of compensation and the latter is because of patient preferences. The majority of women choose their OBGYN based on the physician's rating and not on the physician's sex, however.

A retrospective study of gestational weight gain in relation to the Institute of Medicine's recommendations by maternal body mass index in rural Pennsylvania from 2006 to 2015.

BACKGROUND: In 2009, the Institute of Medicine (IOM) published guidance on gestational weight gain (GWG) modified by maternal pre-pregnancy body mass index (BMI). Estimates indicate that less than half of US pregnant women have GWG within recommendations. This study examined GWG from before (2006-2009) and after (2010-2015) the release of the IOM guidance in a rural, non-Hispanic white population to assess the proportion of women with GWG outside of IOM guidance, whether GWG became more likely to be within IOM guidance after 2010, and identify potential maternal factors associated with GWG outside of recommendations. METHODS: We examined GWG in 18,217 term singleton births between 2006 and 2015 in which maternal pre-pregnancy BMI could be calculated from electronic medical records at Geisinger, PA, and a subset of 12,912 births in which weekly GWG in the third trimester could be calculated. The primary outcome was whether GWG was below, within, or above recommendations based on maternal BMI. The relationships between GWG, maternal BMI, parity, age at conception, gestation length, and maternal blood pressure were examined. RESULTS: GWG declined with increasing maternal BMI, however, more than 50% of overweight and obese women gained above IOM recommendations. About one of five women gained below recommendations (21.3%) with underweight women the most likely to gain below recommendations (33.0%). The proportion of births with usable data increased after 2010, driven by a higher probability of recording maternal weight. However, the proportion of women who gained below, within or above recommendations did not change over the ten years. GWG above recommendations was associated with higher maternal BMI, lower parity, and longer gestation. GWG below recommendations was associated with lower maternal BMI, higher parity, shorter gestation, and younger age at conception. Maternal blood pressure was higher for GWG outside recommendations. CONCLUSIONS: Despite the publication of IOM recommendations in 2009 and an apparent increase in tracking maternal weight after 2010, GWG in this population did not change between 2006 and 2015. A majority of overweight and obese women gained above recommendations. GWG below recommendations continues to occur, and is prevalent among underweight women.

Prenatal depression screening and antidepressant prescription: obstetrician-gynecologists' practices, opinions, and interpretation of evidence.

Obstetrician-gynecologists (ob-gyns) are well-positioned to detect symptoms of perinatal depression; however, little is known about how ob-gyns respond. The purpose of this study was to evaluate ob-gyns' beliefs and practices related to prenatal depression screening and antidepressant prescription during pregnancy. A larger survey on prenatal medication was developed at the American College of Obstetricians and Gynecologists (ACOG) and distributed to a sample of 1000 Fellows. The overall response rate was 37.9% (N = 379). Two hundred eighty-eight provided care to pregnant patients and therefore, responded to questions on prenatal depression screening and antidepressant prescription. Most ob-gyns (87.8%) routinely screened patients for depression at least once during pregnancy. When symptoms of depression were reported, 52.1% "sometimes" prescribed an antidepressant medication with 22.5% doing so "usually or always". While 84.0% prescribed selective serotonin reuptake inhibitors (SSRIs) to pregnant patients, only 31.9% prescribed non-SSRIs. Ob-gyns felt comfortable prescribing SSRIs (78.1%) and counseled patients that the benefits of treating depression pharmacologically outweigh the risks (83.0%), and the use of SSRIs during pregnancy is relatively safe (87.5%). Prescribing SSRIs to pregnant patients was not significantly associated with interpretation of evidence on fetal and neonatal outcomes. Findings suggest most ob-gyns in the USA at least sometimes prescribe antidepressants in response to patient reports of depression symptoms during pregnancy. Mixed interpretations of evidence regarding the effects of SSRIs on fetal and neonatal outcomes reflect a critical need for high-quality safety data upon which to base treatment recommendations.

Provider and Patient Knowledge and Views of Office Practices on Weight Gain and Exercise during Pregnancy.

OBJECTIVE: This study sought to assess provider and patient knowledge and beliefs on gestational weight gain (GWG) and exercise during pregnancy, outline current clinical practices and the perceived value of educational tools. STUDY DESIGN: Providers and patients at the George Washington Medical Faculty Associates Obstetricians and Gynecologists clinic were recruited for a voluntary survey. Descriptive statistics of responses were compared and chi-square analysis tested for significant associations. RESULTS: A total of 461 patient and 36 provider questionnaires were analyzed. Providers recommended GWG consistent with the Institute of Medicine guidelines for a "normal" body mass index (82.9%); however, a majority (52.8%) recommended GWG below guidelines for obese women. All providers reported counseling patients on GWG, but only 53.4% of patients reported discussing personal recommendations. About half of providers reported distributing educational materials for GWG (60.0%); however, only 30.6% of patients reported receiving them. African American patients self-reported receiving the highest rates of counseling and educational materials, though a lower rate of recommendations to exercise. Patients perceived educational tools to be more useful than did providers. CONCLUSION: Our findings suggest a gap between provider-patient perceptions regarding counseling and provision of informational materials. Future research should study whether implementing various educational tools might increase the efficacy of current practices.

Counseling patients on reproductive aging and elective fertility preservation-a survey of obstetricians and gynecologists' experience, approach, and knowledge.

PURPOSE: What are the experience, approach, and knowledge of US Obstetricians and Gynecologists' (ob-gyn) towards counseling patients on reproductive aging (RA) and elective fertility preservation (EFP). METHODS: A cross-sectional survey emailed by the American College of Obstetricians and Gynecologists (ACOG) to 5000 ACOG fellows consisting of 9 demographic and 28 questions relating to counseling patients on RA and EFP. RESULTS: Seven hundred and eighty-four responders completed the survey. Although 82.8% agreed that conversations relating to RA should take place with patients desiring future childbearing and delaying due to social reasons, only 27.6% stated that they frequently counsel these women aged 18-34 years old, compared to 75.8% aged 35-44 years old (P < 0.01). Limited time (75.8%) and limited knowledge (41.4%) were amongst the most frequent reported barriers towards counseling patients on RA. Fifty-eight percent stated that they have been asked about EFP by patients. Although 74.8% agreed that conversations should take place related to EFP in women desiring future childbearing and delaying due to social reasons, only 27.6% stated that they frequently counsel these patients on EFP (P < 0.01). Limited time (75%) and limited knowledge (59.9%) were amongst the most frequent barriers towards counseling on EFP. CONCLUSIONS: In the USA, methods to improve patient counseling and provider knowledge on RA and EFP are warranted and further studies are needed to address optimal methods to improve counseling and knowledge related to these topics.

Patterns of point-of-care test use among obstetricians and gynaecologists in the US.

Background Point-of-care tests (POCTs) for reproductive health conditions have existed for decades. Newer POCTs for syphilis, HIV and trichomonas are currently available and easy to use. We surveyed practicing obstetricians and gynaecologists to determine current POCT use and perceived obstacles to use. METHODS: Between June and August 2016, 1000 members of the American College of Obstetricians and Gynecologists were randomly selected and invited to complete a Qualtrics (222 West river Park Drive, Provo, Utah 84604, USA) survey; 600 of these were members of the Collaborative Ambulatory Research Network. Respondents who completed at least 60% of the survey were included in the analysis. RESULTS: Of the 1000 selected members, 749 had valid emails and 288 (38%) of these participated in and completed the survey. Of the respondents, 70% were male with a mean of 18 years in practice. Detection of sexually transmissible infections (STIs) once or twice a week was reported by 30%, whereas 45% reported detecting STIs once or twice a month. POCTs used included pregnancy tests (83%), urine dipstick (83%), wet mount tests (79%) and the vagina pH test (54.8%). Few used Gram stain (5%) and stat rapid plasma regain tests (4%). Relatively newer US Food and Drug Administration-approved POCTs were used less frequently, with 25% of respondents reporting using the Affirm VPIII (Becton, Dickinson and Company, 1 Becton Drive, Franklin Lakes, NJ 07471, USA) test use and only 10% using a rapid HIV test. The most common perceived barriers to testing were the amount of reimbursement received for performing the test (61.9%) and the payment coverage from the patient (61.3%). CONCLUSIONS: US obstetricians and gynaecologists rely on laboratory test results and traditional POCTs to diagnosis STIs. Future development and marketing of POCTs should consider not only ease and time of test performance, but also the cost of the tests to the practice and the patient, as well as reimbursement.

Physicians' Perspectives and Practice Patterns Toward Opportunistic Salpingectomy in High- and Low-Risk Women.

BACKGROUND: Opportunistic bilateral salpingectomy (OBS) has been proposed as an ovarian cancer risk-reducing strategy. METHODS: A survey was emailed to 300 members of the American College of Obstetricians and Gynecologists. RESULTS: 125 (42%) surveys were returned: 60% female, 88% generalists, 67% private practice. Only 36% correctly identified the lifetime risk of ovarian cancer, only 23% understood the risk-reducing benefit of bilateral salpingo-oophorectomy. 75% perform salpingectomy during hysterectomy, 26-53% use for sterilization depending on approach. Concerns were increased operative time and complications. For BRCA mutations, 64% recommend BSO, 12% recommend a two-step risk-reducing strategy, and 14% refer to gynecologic oncology. CONCLUSIONS: We identified broad support and factors limiting willingness to perform OBS.

Twin vaginal delivery: innovate or abdicate.

Neonatal safety data along with national guidelines have prompted renewed interest in vaginal delivery of twins, particularly in the case of the noncephalic second twin. Yet, the rising rate of twin cesarean deliveries, coupled with the national decline in operative obstetrics, raises concerns about the availability of providers who are skilled in twin vaginal birth. Providers are key stakeholders for increasing rates of twin vaginal delivery. We surveyed a group of practicing obstetricians to explore potential barriers to the vaginal birth of twins with a focus on delivery of the noncephalic second twin. Among 107 responding providers, only 57% would deliver a noncephalic second twin by breech extraction. Providers who preferred breech extraction had a higher rate of maternal-fetal medicine subspecialty training (26.2% vs 4.3%; P<.01) and were more likely to be in an academic practice environment (36.1% vs 10.9%; P<.01) and to practice in high-volume centers that deliver >30 sets of twins annually (57.4% vs 34.8%; P=.02). Most providers (54.2%) were familiar with the findings from the recent randomized trial that demonstrated the safety of twin vaginal birth. However, knowledge of the trial was not associated statistically with a preference for breech extraction (62.3% vs 43.5%; P=.05). Providers who preferred breech extraction were more likely to agree with recent society guidelines that encourage the vaginal birth of twins (86.9% vs 63.0%; P<.01). In an adjusted analysis, the 46% of providers with a perceived need for more training were far less likely to prefer breech extraction for delivery of a noncephalic second twin (adjusted odds ratio, 0.38; 95% confidence interval, 0.16-0.95). Furthermore, 57% of providers who would not offer their patient breech extraction would be willing to consult a colleague for support with a noncephalic twin delivery. These results suggest that scientific evidence and society opinion are likely insufficient to reverse the national trends that favor cesarean delivery for twins. Instead, implementation of provider training and support programs is critical for increasing the rates of twin vaginal birth. Changing our national landscape of vaginal twin delivery may require innovation. Without novel provider-focused strategies, we may relinquish passively the requisite skills for not only our patients but also for future generations of obstetricians.