Poster Session 2

(398) Iron Deficiency Without Anemia Is Highly Prevalent at 24–28 Weeks’ Gestation: A Prospective Cohort

(399) Limited Diagnostic Value of Maternal Serum AFP Screening for Gastroschisis Detection

(400) Characteristics of Psychotropic Medication Prescribing Before, During, and After Pregnancy

(401) Laser Ablation of Type II vs Type III Vasa Previa

(403) Comparing CGM fasting blood glucose versus time in range as predictors of neonatal hypoglycemia

(404) Long term (3 year) follow-up for patients with placenta accreta spectrum

(405) Does Transfusion Differ in Placenta Accreta Spectrum Compared to Postpartum Hemorrhage Secondary to Other Causes

(406) Metabolomic Profiles in Patients with Postpartum Hemorrhage

(407) Transvaginal ultrasound-guided treatment of live cesarean scar pregnancies

(408) Outcomes of intrauterine transfusion in Hemolytic Disease of the Fetus and Newborn in the US

(409) The Obstetrical Transport Score: A Novel Tool for Guiding Transport Decisions and Predicting Maternal-Fetal Acuity

(410) Implementation of Universal Hepatitis C Screening

(411) Characteristics of Progression of Hypertensive Disorders of Pregnancy

(412) Trends in Hypertensive Disorders of Pregnancy Highlight Persistent Racial and Rural-Urban Disparities: A Statewide Analysis

(413) A novel ultrafast Doppler-based technique for differentiating maternal and fetal circulations within the placenta

(414) Antiseizure medication use in pregnancy and risk of seizure in patients with epilepsy

(415) Effect of Intravenous Fluid Restriction on Nulliparous, Term, Singleton, Vertex Cesarean Delivery Rates

(416) Preterm Birth After Antenatal Corticosteroid Treatment: Associations with Long-Term Infectious Diseases

(417) Temporal Changes in Injury Patterns and Outcomes in Obstetric Trauma at One Academic Center (1994–2023)

(418) Perinatal outcomes of FGR-infants ≥26 weeks and <500g compared to <26weeks neonates with paired birthweight.

(419) Social Vulnerability and Racial Disparities in Preterm Birth: A National Cohort Study

(420) Adverse perinatal outcomes associated with anemia in early and late pregnancy

(421) Histopathologic changes associated with Treponema pallidum detection in placental tissues

(422) Maternal hypoalbuminemia and complications of hypertensive disorders of pregnancy

(423) A case-control study of uterine rupture in Caluquembe, Angola, 2019–2025: Adverse obstetric and perinatal outcomes

(424) National trends in antepartum hospitalization rates in a healthcare claims database, 2011-2021

(425) Glycemic Control and Pregnancy Outcomes among Individuals using Hybrid Closed-Loop Therapy

(426) Serial sebum sampling in intrahepatic cholestasis of pregnancy

(427) Correlating placental pathology to clinically diagnosed intra-amniotic infection in PPROM

(428) Oral Physiologic vs Non-Physiologic Treatment of Blood Pressure in Preeclampsia with Severe Features

(429) Hospital cesarean delivery rate and risk of obstetric anal sphincter injury among nulliparous births

(430) Performance of universal 5Ps screening to detect opioid use disorder on labor and delivery

(431) Obstetrical outcomes in patients with placenta previa with and without antepartum bleeding

(432) Perspectives on Implementing Social Screenings in Maternal Substance Use Disorder Clinics: A Multicenter Qualitative Study

(434) Obstetric and Neonatal Outcomes Following Pre-pregnancy Exposure to GLP-1 Receptor Agonists: A Retrospective Cohort Study

(435) Vasopressors for Prevention of Postspinal Hypotension During High-Risk Cesarean Delivery: A Network Meta-analysis

(436) Assessing the Impact of Tirzepatide Exposure on Human Fetal Neural Stem Cells.

(437) Routine use of fetal brain MRI following fetal intervention

(438) Enhanced Thematic Analysis of the Focus Group Discussion on Gestational Diabetes and Preeclampsia Postpartum

(439) Delivery mode and risk of atopic disease: a population based cohort study

(440) Discharge on Labetalol Lowers 6-Week Postpartum Diastolic Blood Pressure Compared to Nifedipine

(441) Subsequent Pregnancy Outcomes After Nulliparous Second-Stage Cesarean Versus Operative Vaginal Delivery

(442) Late Preterm Labor Induction Outcomes in Nulliparas with Hypertensive Disorders of Pregnancy

(443) Agentic AI in Gestational Diabetes Care: An Analysis of Patient Communication and Concerns

(444) Combined Hormonal Contraceptives During Lactation: A Network Meta-Analysis of Breastfeeding, Maternal, and Infant Outcomes

(445) Free thyroxine (FT4) assay in pregnancy routinely underestimates T4 compared to the adjusted Total T4

(446) Comparing Standard Clinical Evaluation & Immunoassays in Diagnosing of Rupture of Membranes: A Systematic Review

(447) Delivery morbidity and discrimination impact postpartum follow up

(448) Delivery Outcomes Among Patients with Marfan Syndrome in the United States: 2016-2022

(449) Severe maternal morbidity and mortality among patients with hypertensive disorders of pregnancy

(450) Beyond Maternal Indications: Considering Fetal Risk in the Management of Severe Preeclampsia

(451) Retrospective Analysis of AI Alarm Rate in Prenatal Cardiac Screening

(453) Platelet Count Trends Across Consecutive Deliveries in Women with Gestational Thrombocytopenia

(454) Estimated versus Quantitative Blood Loss: Association with Blood Transfusion

(455) Optimizing obstetric ultrasound education: a randomized trial of pocket-sized ultrasound probes versus traditional ultrasound machines

(456) A decision tree model including sonographic measurement of head-perineum distance to predict difficult vacuum delivery

(457) Association between definitions of fetal growth restriction and placental insufficiency

(458) Periconception Hemoglobin A1c and the Risk of Neurodevelopmental Disorders in the Offspring

(459) Risk of Recurrent Stillbirth in a Subsequent Pregnancy

(460) Is there an Association between Parity and Neurovascular Complications in Patients with Sickle Cell Disease?

(461) Seasonal Associations Between Gastroschisis Rates and Pesticide Application in California

(462) Incidence of Recurrent Preterm Birth Before and After the PROLONG Trial

(463) Cardiac remodeling in fetuses exposed to threatened preterm labor delivered near or at term

(464) Rescue Antenatal Corticosteroid Administration in Twin Pregnancies: A Cost-Effectiveness Analysis

(465) Placental Inflammation, Angiogenesis and Senescence Markers in Preterm Premature Rupture of Membranes

(466) Racialized Disparities in Adverse Health Outcomes During Second Trimester Medication Abortion

(467) Cord Tissue Analysis of Prenatal Buprenorphine Exposure and Neonatal Withdrawal

(468) Eclampsia Recurrence in the Modern Era: A 10-Year National Cohort Study

(469) Identifying Culture-Positive Intrapartum Fever: Risk Factors from a Retrospective Cohort and CHAID Analysis

(470) Factors associated with uptake of prenatal repair for fetal myelomeningocele

(471) Disparities in Low Dose Aspirin Prescription Among Patients at Increased Risk for Preeclampsia

(472) Maternal transocular ultrasound for prediction of hypertensive disorders of pregnancy

(473) Effect of Pre-conception Bariatric Surgery on Attention-deficit Hyperactivity Disorder: Role of Child’s Sex and Race/Ethnicity

(474) Reducing Postpartum Hemorrhage and Blood Transfusion Rates Through Standardized Anemia Management: A Quality Improvement Initiative

(475) The Association between Premature Antenatal Corticosteroid Exposure and Long-Term Respiratory Morbidity in Offspring

(476) Enlarged Cardiothoracic Ratio Detection for Ebstein Anomaly Detection using Artificial Intelligence

(477) Local growth curves overestimate fetal size and may miss pathologic growth restriction

(478) Factors associated with severe maternal morbidity among patients with placenta accreta spectrum disorder

(479) Can the Expanded Obstetric Co-morbidity Score predict Intrapartum SMM using data available during prenatal care?

(480) Comparing adverse outcomes of FGR defined by abdominal circumference versus EFW: A Retrospective Chart Review

(481) Prediction of adverse neonatal outcomes by different birthweight standards

(482) The safety and utility of attempting an external cephalic version after two prior cesarean deliveries

(483) The Effect of Modifiable Risk Factors on Recurrence of Placental Abruption: A Population-Based Cohort Study

(484) Swiss Solutions to Pregnant Problems: Evaluating the Ganzoni Formula in Anemic Individuals Receiving IV Iron

(485) Non-invasive point-of-care hemoglobin resting in an obstetric population

(486) Establishing a mean arterial pressure threshold for severe hypertension in labor

(487) Quantitative assessment of biomechanical changes during cervical ripening in labor induction

(488) Short Interpregnancy Interval after Fetal Growth Restriction: Impact on Subsequent Pregnancy Outcomes

(489) Estimated versus Quantitative Blood Loss and Associated Hemorrhagic Complications: A Pre- and Post-Intervention Study

(490) Optimal continuous glucose monitor “Time in Range” and neonatal hypoglycemia in pregnant patients with diabetes

(491) Development of Therapeutics for Preterm Premature Rupture of Membranes Using Regenerative Medicine

(492) Exploring the Link Between Maternal Chronic Hypertension and Offspring Neurological Health

(493) Long-Term Offspring Health Following Fertility Treatments in Women Aged 40 and Above

(495) Association between Hypertensive Disorders of Pregnancy and Preterm Neonatal Respiratory Outcomes following Betamethasone Administration

(496) National trends in postpartum readmission for de novo endometritis, 2010-2021

(497) Prenatal Mood Symptoms Predict Lower Objectively Measured Activity and Altered Perception of Activity Level

(498) Impact of Specialized Cardiac Care Proximity on Maternal and Neonatal Outcomes in Fetal Heart Disease

(499) Fetal Head Station at Second Stage Onset Predicts Delivery Outcomes in Nulliparous Women

(500) Low Titer O+ Whole Blood in Massive Transfusion of Obstetric Patients: a Retrospective Cohort Study

(501) Increasing Parity and Long-term Risk of Maternal Psychiatric Morbidity: A Cohort Study

(502) Association between timing of delivery after corticosteroids administration and their clinical indication

(503) Routine Comprehensive First Trimester Anatomy Scans: Enhanced Early Detection of Fetal Anomalies

(504) Termination of Pregnancy Among Patients at Risk for Periviable Delivery

(505) Likelihood of shoulder dystocia in nondiabetic patients with birthweight ≥ 4,000 grams

(506) Outcomes associated with hypertensive disorders of pregnancy in the setting of statewide quality improvement

(507) Isolated Abdominal Circumference <10% in Fetal Growth Restriction: Indicator of Neonatal Outcomes or Overdiagnosis?

(508) Maternal Nativity and Preterm Birth Risk Among US Twin Pregnancies: A National Population Study

(509) Uterine Cavity Evaluation after Uterine Preserving Surgery in Placenta Accreta Spectrum: Comparative Surgical Outcomes Analysis

(510) Outcomes of pregnancies complicated by P-PROM after mid trimester amniocentesis

(511) Social determinants of health associated with de novo opioid use disorder (OUD)-related postpartum re-admissions

(513) Comparison of sepsis case definitions among obstetric delivery encounters

(514) Severity of excess gestational weight gain and dyadic outcomes in normal BMI pregnancies

(515) Comparing Severe Maternal Morbidity Between Somali and Non-Somali Black Birthing Individuals

(516) Sonographic Misclassification of Fetal Growth and Its Influence on Delivery Decisions: Time for Improved Accuracy

(517) Fetal Head Station at Second-Stage Onset in Twin Pregnancies and Delivery Outcomes

(518) Intrapartum Fingerstick vs. Continuous Glucose Monitoring in Patients with Type 2 and A2 Gestational Diabetes

(519) Maternal and Fetal Adverse Reactions with Iron Infusions

(520) Maternal vaccination behavior as predictor of neonatal vaccine acceptance

(521) Association Between Blood Product Refusal and Cesarean Delivery in Nulliparous Term Singleton Vertex Pregnancies

(522) Combined Effect of Adverse Pregnancy Outcome and Steatotic Liver Disease on Future Cardiovascular Disease Risk

(523) PTSD in pregnancy: maternal and neonatal outcomes

(524) Risk Factors for Readmission With Delayed Postpartum Preeclampsia: A Retrospective Case-Control Study

(525) Evaluating the impact of threatened ICE activity on Maternal-Fetal Medicine clinic attendance

(526) Congenital syphilis risk following inadequate treatment of late latent or unknown duration syphilis in pregnancy

(527) Digital based management system (MomStart) for Diabetes in Pregnancy: Improving Perinatal Outcomes Through Technology-Based Care

(529) How does ChatGPT compare to MFM specialists in diagnosing PAS?

(530) Accounting for Time From Labor Onset Improves the Detection of Hypoxic-Ischemic Encephalopathy in Labor

(531) Outcomes of IVF Versus Non-IVF Conceived Monochorionic-Diamniotic Twin Gestations

(532) It takes two: An initiative to increase partner carrier screening rates

(533) Women with Higher-Order Cesareans and risks of TOLAC (WHOTOLAC)

(534) Impact of Opioid Use Disorder on Oxytocin Required for Labor Induction in Term Pregnancies

(535) Utilization of GPT for Enhanced Safety and Quality Review in Healthcare

(536) Characteristics and outcomes of selective fetal growth restriction with intermittent absent end diastolic flow

(537) Cell-Free-DNA based tests for prenatal diagnosis of fetal anomalies: what is the diagnostic yield?

(538) Association of maternal and cord plasma leptin levels with fetal adiposity across gestation

(539) Twin-Twin Transfusion Syndrome after Fetoscopic Laser Photocoagulation: Survival Outcomes According to Gestational Age at Delivery

(540) Pathogenic and likely pathogenic copy number variants detected by chromosomal microarray in isolated fetal ventriculomegaly

(541) School of POWHER Training Impact on Traditional Birth Attendant Motivation and Client Empowerment in Kenya

(542) Third-Trimester Biometric Discordance Between AC and EFW and Risk of Adverse Outcomes

(543) Predicting Gestational Weight Gain Using Hybrid Weight Sources and Machine Learning

(544) The impact of an immediate postpartum LARC program on short-interval birth rates in Tennessee

(545) Improving Human Milk Education for OB/GYN Residents: A Quality Improvement Initiative

(546) Changes in Birth Prevalence of Congenital Anomalies Post-Dobbs in States with Varying Abortion Policies

(548) Association between maternal serum essential fatty acids and fetal development: a prospective longitudinal study

(549) Quantifying the evidence gap: Assessing the exclusion of pregnant and lactating persons from clinical trials

(550) Incidence of fetal growth and fluid abnormalities diagnosed by serial ultrasounds in patients with obesity

(551) Economic Implications of Stillbirth to Families and the Health Care System

(552) More Complicated Perioperative Course of Cesarean Section in Patients with Endometriosis

(553) Impact of induction versus expectant management on cesarean rates in nulliparous women with closed cervix

(554) Cervical mucin expression is associated with preterm birth: molecular determinants of mucus quality in pregnancy.

(555) Geographic differences in co-occurring perinatal mood and anxiety disorders and substance use during pregnancy

(556) A nationwide analysis of adverse delivery outcomes among adolescents pre- and post-Dobbs decision

(557) Keys to A Successful Induction in Patients with BMI > 40

(558) Psychosocial stressors and preterm birth among individuals at risk for adverse pregnancy outcomes

(559) Resolved and Persistent Fetal Growth Restriction: Associations with Small-for-Gestational-Age Neonates

(560) Vaginal Birth after Cesarean (VBAC): Achieving the Healthy People Nulliparous Term Singleton Vertex (NTSV) Goal

(561) Severe maternal morbidity in second-stage Cesarean sections

(562) Impact of interdisciplinary clinic on delivery mode and gestational age in adult congenital heart disease

(563) Optimal Antibiotic Treatment Strategy for GBS-Negative individuals diagnosed with PPROM prior to 34 Weeks

(564) Accidental Dural Puncture During Labor – The Impact on Perinatal Outcome

(565) Adverse Pregnancy Outcomes in Patients with Excessive Gestational Weight Gain versus Pre-Pregnancy Obesity

(566) Association of Proteinuria with Latency in Expectantly Managed Early-Onset Preeclampsia with Severe Features

(567) Association Between Cerebroplacental Ratio and Placenta Regardless of Birthweight: Secondary Analysis of the IMPACT-BCN Trial

(568) Hindbrain Herniation Reversal and CSF Diversion Following Fetoscopic Spina Bifida Repair with Umbilical Cord Patch

(569) Clinical Impact of Fetal Weight Estimation Errors on Maternal and Neonatal Outcomes

(570) Delayed pushing in second stage: Variation in de-implementation in real world clinical settings

(571) Prediction of preterm birth in twin pregnancies using cervical length and baseline clinical variables

(572) Association of duration of breastfeeding with child neurodevelopment at 18 to 30 months

(573) Does metformin use in pregnancy alter glucose tolerance postpartum in patients with gestational diabetes?

(574) Aortopathies and Hypertrophic Cardiomyopathy in Pregnancy

(575) Are women enrolled in a postpartum monitoring app more likely to receive lactation care postpartum?

(576) Beyond ultrasound: MRI for fetal neuroanatomy evaluation following laser surgery for twin-twin transfusion syndrome

(577) An RCT to Assess Impact of Video Education on Decisional Conflict Regarding Aneuploidy Testing

(578) Coagulation Markers Among Preeclamptic Pregnancies: A Systematic Review and Meta-Analysis

(579) Perinatal outcomes following multifetal pregnancy reduction at a quaternary referral center

(580) The association between obesity and post-cesarean morbidity

(581) Shorter Latency After Previable PPROM Is Associated With Increased Risk of Subsequent Preterm Birth

(582) Association between Social Determinants of Health and Acute Care Utilization in Pregnancy

(583) Antenatal fetal surveillance use and stillbirth risk in the US

(584) Beyond Comorbidities: Integrating Real-Time Clinical Data to Improve Prediction of Severe Maternal Morbidity

(585) Obstetrics comorbidities index predicts severe maternal morbidity in patients with placenta accreta spectrum

(586) Ampicillin–Gentamicin Versus Ampicillin Alone for Term PROM in GBS-Negative Patients: A Randomized Controlled Trial

(587) The higher preterm birth risk after conization is unaltered by conization-to-pregnancy interval or interventions

(588) Use of low dose aspirin and timing of preeclampsia with severe features diagnosis and delivery

(589) The Development of Placenta Accreta Spectrum-Sonographic Assessment for Forecasted Estimated Blood Loss (PAS-SAFE) Scoring System

(590) Patient, clinician and administrator perspectives on a home remote blood pressure monitoring program

(591) Support for Universal Third Trimester Ultrasound from Risk Factor-Based Analysis

(592) What to Expect of Expectant Management in Preterm Preeclampsia with Severe Features: Impact of Co-morbidities

(593) Delayed Interval Delivery in Multiple Gestations at Periviability – A Multicenter Retrospective Cohort Study

(594) Maternal body mass index, treatment for gestational diabetes and delivery outcomes

(595) Cost-Effectiveness of Oral vs. IV Iron treatment for Iron Deficiency Anemia in Pregnancy

(596) Perinatal AT1-AA Exposure is a Risk Factor for Preeclampsia

(597) Enhanced Recovery After Surgery Regimens for Cesarean Deliveries complicated by Conditions Contraindicating NSAID and Acetaminophen

(598) Recurrence of hypertensive disorders of pregnancy: a longitudinal study of live births in California, 2016-2021

(599) Outcomes after implementation of a hybrid virtual/in-person prenatal care model

(600) Transfusion risk among pregnant patients with prior metabolic and bariatric surgery

(601) External Cephalic Version in Suspected Growth-Restricted Fetuses: Safety and Success in a Large Cohort

(602) Targeting (Pro)Renin and Its Receptor: A Potential Biomarker and Therapeutic Approach for Preeclampsia

(603) Obstetric Anal Sphincter Injury Repair Proficiency Among Maternal-Fetal Medicine Fellow Physicians

(604) Estimating Individualized Treatment Effects of Labor Induction at 39 Weeks on Maternal and Neonatal Outcomes

(605) Maternal asthma and perinatal outcomes in California

(606) Not All Single OGTT Abnormalities Are Equal: Fasting Abnormal value is correlated with GDMA2

(607) Machine learning versus binary scoring to predict adverse outcomes of pregnant patients with diabetic ketoacidosis

(608) Racial and ethnic disparities in birth location by abortion policy environment in the United States

(609) Survey of current management practices for gestational hypertension and preeclampsia in the postpartum period

(610) Risk of ischemic placental disease and preterm delivery among nulliparous individuals with insomnia

(611) From Delivery to Prevention: Building Bridges to Longterm Cardiometabolic Care

(612) Triple threat: how obesity, chronic hypertension, and pregestational diabetes drive severe maternal morbidity

(613) Surgery-To-Delivery Interval: Critical Predictor of School Age Neurodevelopmental Functioning in Prenatally Repaired Myelomeningocele

(614) Is household income associated with 30-month neurological outcomes after prenatal fetal myelomeningocele repair?

(615) Dynamic Fetal T Cell Responses to Viral Exposure Uncovered by Single-cell Systems Immunology

(616) Prognostic Value and Progression of Umbilical Artery Doppler in Dichorionic Twin Pregnancies with Early-Onset FGR

(617) Long-Term Gastrointestinal Morbidity in Term-Born Offspring Following Antenatal Corticosteroids Exposure Before 34 Weeks of Gestation

(618) Unequal Access, Unequal Outcomes: Food Deserts and Preterm Birth Rates

(619) Association of Prolonged Labor with Infectious Outcomes in Nulliparous Women with Isolated Intrapartum Fever

(620) Divergent Maternal–Fetal Immune Signatures After SARS-CoV-2 Vaccination Versus Infection: High-Dimensional Cytometry Across the Placenta

(621) Racial and ethnic disparities in maternal-newborn dyadic birth outcomes: insights from DOOR methodology

(622) Risk factors associated with readmission after cesarean delivery in the setting of intra-amniotic infection

(623) Comparative effectiveness of two enhanced prenatal care models on prenatal care experience

(624) Maternal Cannabis Exposure and Sleep Quality

(625) Adverse perinatal outcomes among term pregnancies complicated by chorioamnionitis

(626) Is cell-free fetal DNA methylation patterning different among pregnancies affected with fetal growth restriction?

(627) Association Between Oxytocin Exposure in the Second Stage of Labor and Postpartum Hemorrhage

(628) Potassium Chloride Injection Training and Impacts on Procedural Characteristics

(629) Is isolated single umbilical artery a risk factor for long-term gastrointestinal morbidity in the offspring?

(630) Undocumented obstetric hypertension is associated with severe maternal morbidity and unplanned postpartum hospital utilization

(631) Neonatal Fat Mass and Hypoglycemia in Infants of Pregnancies Complicated by Diabetes

(632) Immediate Induction Versus Expectant Management in Primiparas Presenting with Decreased Fetal Movements at 39 Weeks

(633) Impact of Placental sFLT-1 on Neonatal Bronchopulmonary Dysplasia

(634) Optimizing outpatient cervical ripening: a mixed-methods study identifying implementation drivers during a multi-site, randomized trial

(635) Evaluating Machine Learning for Recurrent Preterm Birth Prediction: Secondary analysis of the Omega-3 trial

(636) First Trimester Soluble fms-like Tyrosine Kinase 1 (sFlt-1) and Its Association with Adverse Neonatal Outcomes

(637) Evaluating Acute Renal Failure as an Indicator of Severe Maternal Morbidity

(639) Two antenatal corticosteroid doses are necessary to decrease neonatal mortality in VLBW infants

(640) U.S. state-level periconception GLP-1 receptor agonist prescription prevalence in 2023 and 2024

(641) Natural onset of labor in twin pregnancies: a real-world cohort study

(642) Anesthetic Experience of Patients with Undergoing Cesarean Hysterectomy for Placenta Accreta Spectrum

(643) Obstetric Outcomes Among Women Evacuated from Conflict Zones: A Multicenter Retrospective Cohort Study

(644) Impact of Azithromycin Dose on Amniotic Fluid Cytokines in Preterm Premature Rupture of Membranes

(645) Associations Between Social Disadvantage Indices and Hypertension in Pregnancy in the United States.

(646) Distance to extracorporeal membrane oxygenation access and outcomes for severe COVID-19 in pregnant/peripartum patients

(647) Impact of Sickle Cell Disease Genotype on Severe Maternal Morbidity and Readmission

(648) Device-based measures of postprandial physical activity and glucose in individuals with pregnancy hyperglycemia

(649) Geopolitical Variation in MFM Fellowship Website Diversity, Equity, and Inclusion (DEI) Elements

(650) Are Social Determinants of Health Associated with Vaccine Uptake during Pregnancy?

(651) Maternal Asthma and Childhood Respiratory Risk: Evidence from a Longitudinal Cohort Study

(652) Impact of major local natural disasters on the prevalence of perinatal sexually transmitted infections

(653) Association between oxytocin rest and mode of delivery in low-risk nulliparas at term

(654) Anemia and maternal-newborn dyadic birth outcomes: A Desirability of Outcome Ranking (DOOR) Analysis

(655) Enhancing Obstetric Team Readiness for Maternal Cardiac Arrest Through Simulation-Based, Longitudinal Defibrillator Education

(656) Utility of Routine Hemoglobin Assessment Following Vaginal Delivery

(657) Peripartum cardiac stress markers among pregnancies with and without hypertensive disorder of pregnancy

(658) Third trimester perceived stress is associated with adverse birth outcomes in rural Ethiopia

(659) Clinicians Perceptions of Second Stage Cesarean Delivery Education: A Qualitative Study of Gaps and Opportunities

(660) Postpartum blood pressure trends and time in target range during remote blood pressure monitoring

(661) Maternal-newborn dyadic outcomes by severity of weight gain in obese pregnancies

(662) Transvaginal Cervical Length Assessment in Comparing Single Balloon versus Double Balloon Cervical Ripening

(663) County-Level Associations Between Maternal Care Access and Nulliparous, Term, Singleton, Vertex Cesarean Delivery Rates

(664) Empty Plates, Smaller Weights: Exploring the Association Between Food Insecurity and Fetal Growth Restriction

(665) Prolonged second stage in the presence of meconium-stained amniotic fluid: Is it worth the wait?

(666) Parity and Prior VBAC in Relation to Uterine Rupture Risk During TOLAC

(667) Infectious Morbidity in Term-Born Infants Following Antenatal Corticosteroid Exposure Before 34 Weeks: An Observational Study

(668) Nulliparity at Advanced Maternal Age and Long-Term Morbidity in Offspring: A Population-Based Cohort Study

(669) Rh testing and immunoglobulin administration in early pregnancy among United States family planning providers

(670) Feasibility Trial of Viral Mitigation Measures to Reduce Preterm Birth in High-risk Pregnant Women

(671) Patient Perspectives about Universal Inpatient Postpartum Depression Screening

(672) Adverse Outcomes in Cesarean Scar Ectopic Pregnancies Continuing into Mid- to Late-Trimesters: A Meta Analysis

(673) Long-term outcomes of small-for-gestational-age (SGA) offspring born to mothers with and without uterine malformations

(674) Postpartum Home Blood Pressure Monitoring: Impact on Post-Discharge Morbidity Among Individuals on Antihypertensive Medication

(675) Change in interpregnancy BMI and perinatal outcomes among overweight individuals during their first pregnancy

(676) Does Metformin Use in Pregnancy Decrease Infection Risk?: A Secondary Analysis of The MOMPOD Trial

(677) Trends in Attempted Vaginal Delivery Among Triplet Gestations in the United States, 2014–2023

(678) Impact of Simulation-Based Training on OB/GYN Residents’ Competence in Managing Second-Stage Obstructive Labor Complications

(679) Timing of adjunctive azithromycin administration and postpartum infection

(680) From Hysterectomy to Preservation: Impact of a Multidisciplinary REBOA Protocol in Placenta Accreta

(681) Neonatal acidemia and severe neonatal outcomes among term births according to Apgar score

(682) Induction of labor at 39 Weeks and Cesarean delivery Rates: A Nulliparous Cohort Study

(683) Obstetrical Outcomes Following Preconception to Early Second Trimester Tumor Necrosis Factor-Alpha Inhibitor Use

(684) Association of psychosocial stress and discrimination with perceptions of respectful prenatal care and autonomy

(685) Mid-pregnancy quantification of sub-clinical inflammation by blood-based and vaginal-derived cytokines and the prediction of PTB

(686) Implementation of universal syphilis screening in patients presenting for birth hospitalization: a year in review

(687) Impact of Hypoglycemia During Glucose Testing in Pregnancy on Maternal and Neonatal Outcomes

(688) Effect of oral loop diuretics on postpartum blood pressure trajectories: a randomized-controlled trial secondary analysis

(689) Development of Pre-Pregnancy Diet Quality Index and Its Association with Adverse Pregnancy Outcomes

(690) Determining ethnic disparities inherent to Tier 3 versus Tier 4 carrier screening

(691) Placenta accreta spectrum and postpartum mental health: A global study

(692) What’s the Significance of Nuchal Translucencies <3mm but >95th Percentile in the Era of NIPT?

(693) Abdominal-Pelvic CT For Postpartum Maternal Infectious Morbidities: Clinical Utility and Predictive Factors for Intervention

(694) Machine Learning Approach for Risk Prediction Among Expectantly Managed Early-Onset Severe Preeclampsia

(696) Integrating Complementary Medicine in Labor: A Prospective Observational Study on Birth Experience and Outcomes

(697) Identifying signs of congenital infections with Artificial Intelligence

(832) Cost-Effectiveness of Intramuscular Methylergonovine Prophylaxis at Cesarean Delivery for Twin Gestations: A Decision-Analytic Model