Obstetrics and Gynecology Commons^™

Successful Treatment Of Recurrent Epithelioid Trophoblastic Tumor (Ett) With Pembrolizumab After Pembrolizumab: A Case Report And Review Of Literature In Treatment Of Ett, Sarah Mokma, Sarah Alnaif, Nicholas Cardillo

Abington Jefferson Health Papers

BACKGROUND: Epithelioid Trophoblastic Tumors (ETT) are rare, which makes an optimal treatment regimen difficult to determine. Since PD-L1 is expressed in placental tissue and in gestational trophoblastic neoplasia (GTN), immunotherapies such as pembrolizumab have been proposed as possible treatments.

CASE PRESENTATION: The case presented is a 50-year-old postmenopausal female who presented with postmenopausal bleeding and a large, fungating cervical mass. Cervical biopsies confirmed ETT. The patient underwent primary debulking surgery with radical abdominal hysterectomy, bilateral salpingo-oophorectomy, and sigmoid colon resection. The patient was diagnosed with a FIGO Stage IV ETT due to tumor extension to sigmoid colon with a high-risk …

Universal Screening For Measles Immunity During Pregnancy: A Cost-Effectiveness Analysis, Anuradha Devabhaktuni, Sarah Boudova, Elias Kassir, Sohum Shah, Neil S. Silverman, Christina S. Han

Department of Obstetrics and Gynecology Faculty Papers

BACKGROUND: Measles is a highly contagious illness capable of causing significant morbidity and mortality, including adverse pregnancy outcomes. Routine screening for measles immunity is not currently recommended during pregnancy. Given the increasing frequency of measles outbreaks nationally and globally, awareness of measles immunity status can influence management of pregnant individuals who incur measles exposures and offer an opportunity for postpartum or preconception vaccination.

OBJECTIVE: We sought to evaluate the cost-effectiveness of universal screening for measles immunity during pregnancy in the United States.

STUDY DESIGN: A decision-analytic model was constructed to evaluate the cost-effectiveness of universal screening for measles immunity during …

Prepregnancy Obesity Versus Excessive Gestational Weight Gain: A Comparative Evaluation Of Adverse Outcomes, Samuel Schultz, David Krantz, Matthew Blitz, Ashley Battarbee, Moti Gulersen

Department of Obstetrics and Gynecology Faculty Papers

Background/Objectives: Obesity and excessive gestational weight gain (EGWG) are known risk factors for adverse outcomes in pregnancy, but the comparative risk is less well defined and increasingly relevant in an era of increasing use of weight loss medications. We aimed to determine whether EGWG was associated with adverse maternal and neonatal outcomes, compared with prepregnancy obesity. Methods: Multicenter retrospective cohort study of pregnant patients who delivered a singleton within a single university health system from 2019–2024. Patients with missing prepregnancy body mass index (BMI) data, BMI < 18.5 kg/m2, or pregestational diabetes were excluded. Logistic regression with propensity score weights and g-computation were used to evaluate if the incidence of several adverse maternal and neonatal outcomes were impacted by prepregnancy obesity and gestational weight gain (GWG). p values were adjusted for multiple comparisons. Results: Among the 129,615 pregnancies included, 28,516 (22.0%) had prepregnancy obesity, 36,943 (28.5%) were overweight prior to pregnancy, and 64,156 (49.5%) had a normal BMI prior to pregnancy. When compared to patients with obesity, patients with normal prepregnancy BMI and EGWG had a lower risk of adverse maternal and neonatal outcomes, including gestational diabetes, gestational hypertension, preeclampsia, eclampsia, cesarean delivery, and postpartum hemorrhage, as well as large and small for gestational age birthweight, stillbirth, neonatal intensive care unit admission, neonatal mechanical ventilation, respiratory distress syndrome, intraventricular hemorrhage, necrotizing enterocolitis, and sepsis. Beneficial effects were attenuated for patients with overweight prepregnancy BMI or for larger EGWG. Conclusions: Lower prepregnancy BMI, even with the potential unintended consequence of EGWG, may be more favorable than untreated prepregnancy obesity with regard to perinatal outcomes.

Resource-Conscious Care: Time To Pregnancy And Iui Cycle Outcomes In Female Same-Sex Couples, Lea George, Devika Sachdev, Kassie Bollig

Department of Medicine Faculty Papers

RESEARCH QUESTION: Does the clinical pregnancy rate (CPR) for the first cycle, time to pregnancy, and cumulative CPR up to six consecutive cycles differ between female same-sex couples undergoing intrauterine insemination (IUI) alone and those undergoing IUI with ovarian stimulation?

DESIGN: This retrospective cohort study evaluated 554 female same-sex couples undergoing IUI alone (n = 264) or IUI with ovarian stimulation (n = 290) at a single centre using cryopreserved donor spermatozoa from January 2012 to January 2022.

RESULTS: Overall, CPR for the first cycle was 17.9% (99/554). In adjusted analyses, there was no significant difference in CPR in IUI …

Maternal, Perinatal, Neonatal, And Postpartum Outcomes Following Severe Acute Respiratory Syndrome - Coronavirus-2 Infection In Pregnancy: A World Health Organization Multi-Country Prospective Cohort Study, Edna Kara, Sami Gottlieb, Nathalie Broutet, Anna Thorson, Marie Delnord, Ibukun-Oluwa Abejirinde, Ronaldo Silva, Marleen Temmerman, Rodney Adam, Ingrid Gichere

Pathology, East Africa

Background Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection has raised global concerns regarding its impact on pregnant women and their infants, particularly across evolving variants. This study aimed to determine if infection during pregnancy increased the risk of adverse maternal, perinatal, neonatal, or postpartum outcomes during pre-Omicron and Omicron periods.

Methods We conducted a prospective cohort study in 10 primarily low- and middle-income countries, comprising public and private maternity hospitals in rural and urban areas. Maternal age and comorbidity adjusted mixed-effects models with country-specific random intercepts were used to estimate relative risks (RRs) comparing participants with and without infection …

Less Frequent Versus More Frequent Cervical Examinations In Labor: A Systematic Review And Meta-Analysis, Alessandro Petrecca, Benedetta Bina, Chiara Tersigni, Tullio Ghi, Vincenzo Berghella

Department of Obstetrics and Gynecology Faculty Papers

BACKGROUND: Digital cervical examinations are central to intrapartum care, yet their optimal frequency remains uncertain and is largely based on consensus rather than high-quality evidence.

OBJECTIVES: To compare less frequent versus more frequent cervical examinations during labor in terms of obstetrical, maternal and neonatal outcomes.

SEARCH STRATEGY: We searched Medline, Cochrane Library, EMBASE, PubMed Central, Scopus and ClinicalTrials.gov from inception to August 2025, without language or geographic restrictions. The review was registered in PROSPERO (CRD420251033729).

SELECTION CRITERIA: Randomized controlled trials comparing different frequencies of cervical examinations in term singleton pregnancies during labor were included.

DATA COLLECTION AND ANALYSIS: Two reviewers …

Progesterone And Cerclage Together For Short Cervix: Evaluating Potential Complementary Effects For Improved Preterm Birth Prevention, Vincenzo Berghella, Ilaria Paladino, Moti Gulersen, Lauren Sayres, Amanda Roman, Rupsa C. Boelig

Department of Obstetrics and Gynecology Faculty Papers

Management of patients with a short cervical length (CL) on transvaginal ultrasound (TVU) often involves therapy with vaginal progesterone and/or cervical cerclage. Although these interventions are frequently viewed as alternative strategies, they may also represent complementary approaches targeting different mechanisms involved in spontaneous preterm birth. As in other areas of medicine, therapies with different mechanisms are often used together rather than as mutually exclusive options. In line with current level 1 evidence from randomized controlled trials (RCTs) and meta-analyses of RCTs on either vaginal progesterone or cerclage, in singleton gestations with no prior spontaneous preterm birth (SPTB), vaginal progesterone is …

Preoperative Considerations For Cervical Cerclage (Part 1), Ilaria Paladino, Moti Gulersen, Amanda Roman, Rupsa C. Boelig, Vincenzo Berghella

Department of Obstetrics and Gynecology Faculty Papers

Transvaginal cervical cerclage remains a central strategy for preventing spontaneous preterm birth in appropriately selected pregnancies. Although decades of research have clarified which patients benefit most from cerclage, substantial heterogeneity persists in pre-, intra-, and postoperative management. This article, the first in a series on cerclage technique, synthesizes the evidence guiding preoperative decision-making. Cerclage is classified by indication as history-indicated cerclage, ultrasound-indicated cerclage and physical examination-indicated cerclage. History-indicated cerclage is recommended for patients with ≥3 prior early spontaneous preterm births or second-trimester losses < 28 weeks, prior ultrasound-indicated cerclage with delivery at< 32 weeks, or prior physical examination-indicated cerclage; twin gestation alone is not considered an indication. Ultrasound-indicated cerclage should be considered in singletons without prior spontaneous preterm birth with transvaginal ultrasound cervical length ≤20 mm and is recommended in singletons with prior spontaneous preterm birth when cervical length is ≤25 mm before 24 weeks' gestation; in twins, it may be considered when cervical length ≤15 mm before 24 weeks' gestation. Physical examination-indicated cerclage is recommended in singleton or twin gestations with asymptomatic cervical dilation ≥1 cm before 24 weeks' gestation. Timing varies by indication: history-indicated cerclage is typically placed at 12 to 14 weeks' gestation and is not urgent, whereas ultrasound-indicated cerclage and physical examination-indicated cerclage are usually performed between 16 and 23 6/7 weeks' gestation in response to cervical changes, ideally within 72 hours and 24 hours of diagnosis of short transvaginal ultrasound cervical length or dilated cervix, respectively. Preoperative evaluation should include a detailed anatomic ultrasound examination and appropriate genetic screening. Routine urogenital cultures are not indicated in the absence of symptoms. Amniocentesis is not recommended for history-indicated cerclage or ultrasound-indicated cerclage but should be considered before physical examination-indicated cerclage to evaluate for intra-amniotic infection. Adjunctive management remains variable. Progesterone is recommended for a short cervical lenght < =25mm before 24 weeks. Outpatient cerclage appears safe, with no clear benefit to routine inpatient management. Perioperative indomethacin and antibiotics are likely unnecessary for history-indicated cerclage but may be considered in ultrasound-indicated cerclage and are suggested for physical examination-indicated cerclage.

Just Opt For Caesarean Section And Pick The Birthdate': A Qualitative Study Exploring Women's Delivery Preferences After Caesarean Section In Urban Tanzania, Daudi Gidion, Columba Mbekenga, Miriam Mgonja, Marleen Temmerman, Muzdalfat Abeid

Obstetrics and Gynaecology, East Africa

Objectives To explore perspectives, preferences and decision-making regarding mode of delivery after a previous caesarean section among women in urban Tanzania.

Design A descriptive qualitative study using semi-structured in-depth interviews. Data were analysed using thematic analysis.

Setting A private tertiary hospital in Dar es Salaam, Tanzania.

Participants 11 women with one previous caesarean section who delivered at the study site were interviewed on the third day after delivery. Participants were purposively sampled to include both modes of delivery: five women underwent repeat caesarean section and six attempted a trial of labour after caesarean (TOLAC).

Results Thematic analysis identified four key …

Insurance Type And Menopausal Hormone Therapy Use Among Us Women, Arina Chesnokova, Sunni Mumford, Allison Schachter, Rebecca Hamm, Scott Lorch, Matthew Klebanoff, Sarah Lindley, Erika Harness, Makeba Williams, Marilyn Schapira

Student Papers, Posters & Projects

IMPORTANCE: Access to menopausal hormone therapy (MHT) in the US remains low. Understanding whether insurance type is associated with MHT underuse and racial disparities in menopausal care is critical for designing interventions that increase evidence-based and equitable menopause care.

OBJECTIVE: To examine whether Medicaid compared with private insurance is associated with lower MHT use among US women. A secondary objective explored the degree that payer type is associated with observed racial differences in MHT use.

DESIGN, SETTING, AND PARTICIPANTS: This cross-sectional study used the 2013-2014, 2015-2016, and 2017-2020 cycles of the National Health and Nutrition Examination Survey (NHANES) to identify …

Biomarker-Defined Neural Injury-Risk Profiles And Maternal Plasma Small Extracellular Vesicles In Preeclampsia, Mariele Patungan, Jacqueline Parchem, Tina O. Findley, Avery Dewolf, Ximena Medina Romero

Summer Research Program Abstracts

No abstract provided.

Outcomes With Cerclage For Short Cervix ≤20.9 Mm Before 24 Weeks In Singletons Without Prior Preterm Birth: A Focused Meta-Analysis Of Randomized Controlled Trials, Rupsa Boelig, Kypros Nicolaides, Orion Rust, Katsufumi Otzuki, Sietske Althuisius, Gabriele Saccone, Vincenzo Berghella

Department of Obstetrics and Gynecology Faculty Papers

No abstract provided.

Hpv Vaccination Status And Associated Factors Among Postpartum Patients, Morgan L. Malonson, Sandhya B. Avula, Mary B. Rysavy

Summer Research Program Abstracts

No abstract provided.

Precise-Dyad: A Prospective Cohort Study Linking Maternal And Infant Health Trajectories In Sub-Saharan Africa, Marie-Laure Volvert, Robin Owino, Angela Koech, Onesmus Wanje, Isaac Mwaniki, Joseph Mutunga, Emily Mwadime, Geoffrey Omuse, Moses Mukhanya, Marvin Ochieng, Grace Mwashigadi, Agnes Mutua, Marleen Temmerman, Melissa Gladstone, Amina Abubakar, Helen Nabwera

Centre of Excellence in Women and Child Health

Purpose The PREgnancy Care Integrating Translational Science, Everywhere (PRECISE)-DYAD Study is a prospective observational cohort designed to investigate health outcomes among mother-child pairs (dyads) over the first 3 years of life in two contexts from sub-Saharan Africa. The primary objective of the study was to explore the effects of selected placenta-related complications, such as pregnancy hypertension, fetal growth restriction and preterm birth, on (1) Child health and development, and (2) Women’s health and well-being, including outcomes after stillbirth.

Participants The PRECISE-DYAD Study enrolled women (and their children) originally recruited into the PRECISE pregnancy cohort study in The Gambia and Kenya …

Why Pronatalism Fails The Planetary Health Test, Celine Delacroix, Marleen Temmerman, Nandita Bajaj, Ann Moore, Phoebe Barnard, William Ripple, William Rees, Michael Gerrard, Diana Coole, Robert Engelman

Centre of Excellence in Women and Child Health

No abstract provided.

Performance Of Road-Traffic-Based Exposure Proxies Against Personal Pm2.5 Measurements In Three Sub-Saharan African Countries, Handsome Nyoni, Terence Mushore, Laura Munthali, Sibusisiwe Makhanya, Laurine Chikoko, Stanley Luchters, Matthew Chersich, Fortunate Machingura, Liberty Makacha, Benjamin Barratt

Centre of Excellence in Women and Child Health

Particulate Matter (PM2.5) exposure contributes to the global disease burden, yet its monitoring remains sparse and uneven, with limited ground sensor infrastructure. Road-traffic proxy indicators can provide indirect estimates of PM2.5 where measurements are limited but require context-specific validation. We evaluated three PM2.5 road-traffic-related proxies: (i) population-Weighted Road Network Density (wRND), (ii) Euclidean (straight line) distance from highways (EH), and (iii) Euclidean distance from main roads (EM). We validated these proxies using high-resolution outdoor filtered PM2.5 personal exposure measurements collected over 1 year from 343 postpartum participants in The Gambia, Kenya, and Mozambique. Proxy-PM2.5 associations were assessed using Spearman correlation, …

Cervical Insufficiency Revisited: A Proposal For A New Treatment-Aligned Definition, Vincenzo Berghella, Ilaria Paladino, Moti Gulersen, Rupsa Boelig, Amanda Roman

Department of Obstetrics and Gynecology Faculty Papers

Cervical insufficiency [CI] has traditionally been defined as painless cervical dilation resulting in recurrent second-trimester pregnancy loss in the absence of labor or placental pathology. Definitions from the American College of Obstetricians and Gynecologists and the Royal College of Obstetricians and Gynecologists emphasize historical clinical presentation. However, contemporary obstetrics relies increasingly on ultrasound-based cervical length surveillance and evidence-based cerclage indications rather than retrospective diagnosis. The objective of the review was to propose a definition of cervical insufficiency aligned with current evidence-based indications for mechanical prevention of preterm birth, i.e. cervical cerclage. In modern obstetric practice, the operational diagnosis of clinically …

Isolated Polyhydramnios: Diagnosis Should Be Made Based On Both Elevated Afi And Elevated Mvp, Alessandro Petrecca, Vivian Nguyen, Lauren Bracken, Federica Bellussi, Suneet Chauhan, Tullio Ghi, Vincenzo Berghella

Department of Obstetrics and Gynecology Faculty Papers

OBJECTIVE: To evaluate which of the different sonographic definitions of isolated polyhydramnios (elevated amniotic fluid index [AFI] alone, elevated maximum vertical pocket [MVP] alone, or both elevated AFI and MVP) is best associated with adverse perinatal outcomes.

STUDY DESIGN: This retrospective case-control study included singleton pregnancies undergoing sonographic surveillance at a tertiary referral center between February 2021 and January 2026. Cases of isolated polyhydramnios identified during this time-period were compared with pregnancies with normal amniotic fluid volume from 2024. Polyhydramnios was categorized as elevated AFI only (AFI ≥24 cm), elevated MVP only (MVP ≥8 cm), or both elevated AFI and …

Healthcare Experiences And Needs Of Patients With Pregnancy Of Unknown Location: A Qualitative Study, Kavita Vinekar, Zahava Shimshi, Amanda Doty, Samantha Kolowrat, Rebecca Mercier, Agatha Berger, Kristin L. Rising

Jefferson Center for Connected Care Faculty Papers

BACKGROUND: Patients presenting with bleeding or pelvic pain in early pregnancy are commonly found to have pregnancies of unknown location (PUL), with no sonographic findings of intrauterine nor ectopic pregnancy. We aimed to explore healthcare experiences and needs of patients presenting with PUL.

METHODS: This was a qualitative study using semi-structured interviews to explore healthcare experiences among patients with PUL. Patients were eligible if they presented with bleeding or abdominopelvic pain to the OB/GYN office or emergency department and were found to have a PUL followed in an electronic health record tracking list; had an initial human chorionic gonadotropin (hCG) …

Impact Of Maternal Covid-19 Infection Versus Vaccination On Mucosal Immunity In Breastmilk, Mymy Nguyen, Rupsa C. Boelig, Julie Jones, Wathsala Wijayalath, Gregory D. Gromowski, Zubair H. Aghai, Elke S. Bergmann-Leitner

Department of Obstetrics and Gynecology Faculty Papers

Background/Objectives: In the first months of their life, infants rely on maternal antibodies for immune protection. Breastmilk is a major source of these defenses, supplying secretory IgA, IgG, and IgM that help guard mucosal surfaces against pathogens such as SARS-CoV-2. Most studies on breastmilk immunity in the context of COVID-19 have emphasized circulating monomeric IgA, rather than the multimeric secretory IgA (sIgA) that is active at mucosal barriers. This study assessed in-depth the contribution of breastmilk antibody subtypes to SARS-CoV-2 neutralization capacity and how these profiles differ following maternal COVID-19 infection versus vaccination during pregnancy or postpartum.

Methods: …

Text Messaging Support For Patients Diagnosed With Impaired Glucose Tolerance During Pregnancy: Nonrandomized Pre-Post Implementation Study Assessing Impact On Postpartum Transitions Of Care, Natasha R. Kumar, Whitney Bender, Celeste Durnwald

Department of Obstetrics and Gynecology Faculty Papers

BACKGROUND: Patients with impaired glucose tolerance (IGT) identified during pregnancy who do not develop gestational diabetes mellitus (GDM) often do not receive additional interventions for their long-term metabolic risks.

OBJECTIVE: This nonrandomized pre-post implementation study reports the design process and initial program evaluation for Better Follow-up of Impaired Glucose Tolerance (BRIDGE), a 12-week text-based postpartum support program promoting hemoglobin A1c (HbA1c) completion and primary care provider (PCP) visit scheduling for patients diagnosed with IGT during pregnancy, assessing improvement in desired postpartum transition milestones. The 19-month program was divided into 2 arms lasting 9.5 months each, BRIDGE- (SMS text messaging support …

Hypertensive Disorders Of Pregnancy, Covid And Readmission Status, Margaret Luebke, Ross Bindler, Trisha Saul, Linda Trinh

Publications 2026-present

No abstract provided.

Cesarean Births Among Non-Us Born Hispanic Women: A Qualitative Study, Linda Presson, Christopher Arzadon, Cecilia Bustamante-Pixa, Wally Mijangos, Trisha Saul

Publications 2026-present

No abstract provided.

Paracrine Signals From Hiv-1-Infected Immune Cells Reprogram Cervical Cancer Pathways, Charles Olwal, Ujjwal Rathore, Sara Makanani, Prashant Kaushal, Immy Ashley, Manisha Ummadi, Vincent Appiah, Alexandra Lindsey Zune, Sophie Blanc, Elkanah Orang'o

Obstetrics and Gynaecology, East Africa

No abstract provided.

Incidence And Risk Factors For Stillbirth In Kenya, Mozambique And The Gambia: The Precise Cohort Study, Grace Mwashigadi, Joseph Akuze, Angela Koech, Hawanatu Jah, Anna Roca, Geoffrey Omuse, Moses Mukhanya, Marleen Temmerman, Amina Abubakar, Patricia Okiro

Centre of Excellence in Women and Child Health

Background

Methods

Terminal Digit Preference And Threshold Avoidance In Digital Blood Pressure Measurements During Pregnancy: Secondary Analysis Of Data From The Clip And Precise Cohorts, Peter Dadelszen, Akshdeep Sandhu, Jeffrey Bone, Rahat Qureshi, Olukayode Dada, Ashalata Mallapur, Marleen Temmerman, Marie-Laure Volvert, Joseph Waiswa, Moses Mukhanya, Angela Koech

Centre of Excellence in Women and Child Health

Background:Screening for, detecting, and managing pregnancy hypertension is a core function of antenatal care. To reduce both training requirements and the risks of measurement error in blood pressure (BP) values, automated and semiautomated BP devices have been validated in pregnant women with normal BP and pregnant women with hypertension and introduced for serial antenatal measurement of BP.

Objectives:The study aimed to (1) determine whether or not repeated BP measurements reduced the presence of terminal digit preference and (2) discern whether or not there was evidence of threshold avoidance in the Community-Level Interventions for Preeclampsia (CLIP) trials compared with …

Family Planning Exemplar Country Selection Methodology: Time Lag And Trends Analysis, Zahid Memon, Abeer Mian, Ira Martopullo, Narjis Hussain, Zeba Sathar, Ali Mohammad Mir, Michael Mbizvo, Marleen Temmerman, Jen Drake, Zulfiqar Bhutta

Centre of Excellence in Women and Child Health

Introduction While many countries achieved notable gains in contraceptive use levels after the 1994 International Conference on Population and Development which redefined family planning (FP) as a human right, there was a long period of 15 years when contraceptive use levels did not receive due attention. It was only later that its subsequent inclusion in the Sustainable Development Goals and the 2012 London Summit on FP renewed global commitment and a focus towards FP. This paper aims to select countries that identify as ‘exemplar’ low-middle-income countries that have achieved exceptional progress in FP. Examining these outliers can uncover actionable drivers …

The Prevalence And Effects Of Gestational Maternal Allergy: A Narrative Review, Alice Werynski Bs, Kang Chen Phd

Medical Student Research Symposium

Title:

The Prevalence and Effects of Gestational Maternal Allergy: A Narrative Review

Authors:

Alice Werynski B.S, Kang Chen Ph.D

Background:

Maternal allergies are a prevalent yet overlooked category of gestational disease. Pregnancy is characterized by a Th2 dominant immunological environment, and because many allergic diseases also rely on Th2 cytokines and IgE-mediated pathways, allergy during pregnancy may impact symptoms and influence maternal and fetal outcomes.

Methods:

This narrative review summarizes and compares literature on the prevalence of allergic conditions in pregnancy, their immunologic mechanisms, and their effects on maternal health, fetal development, and treatment safety. The search was conducted through …

Assessing The Reproductive Potential Of Late Mature Cryopreserved Oocytes, Keri Bergin, Ashna Mehra

Medical Student Research Symposium

Title: Assessing the reproductive potential of late mature cryopreserved oocytes

Authors: Keri Bergin, Ashna Mehra, Rick Slifkin, Morgan Baird, Dmitry Gounko, Carlos Hernandez-Nieto, Joseph Lee, Chelsea Canon, Alan B Copperman, Lucky Sekhon

Background:

Oocytes retrieved at the germinal vesicle (GV) or metaphase I (MI) stage may mature in vitro to MIIs for cryopreservation. Limited data exist on the reproductive potential of late mature MIIs after thaw. This study assesses the thaw, fertilization, and embryo development outcomes of late mature versus immediately mature cryopreserved oocytes.

Methods:

This retrospective cohort study analyzed autologous oocyte cryopreservation cycles with thaws from January 2016 – …

Aspirin And Preterm Birth Among Pregnant People With Increased Heat Exposure: Secondary Analysis Of A Randomized Clinical Trial, Gabriella Meltzer, Luke Duttweiler, Sarah Saleem, Kartik Shankar, Manolo Mazariegos, Antoinette Tshefu, Jackie Patterson, Elwyn Chomba, Waldemar Carlo, Shivaprasad Goudar, Richard Derman, Archana Patel, Patricia Hibberd, Edward Liechty, Fabian Essamai, Edwin Asturias, Denise Babineau, Janet Moore, Cascade Tuholske, Andrew Zimmer, Brent Coull, Elizabeth Mcclure, Robert Goldenberg, Nancy Krebs, Matthew Hoffman, Blair Wylie

Global Health Articles

IMPORTANCE: Scalable interventions are urgently needed to mitigate the adverse effects of heat on pregnancy and newborn health.

OBJECTIVE: To evaluate whether low-dose aspirin modifies the association between heat exposure and preterm birth.

DESIGN, SETTING, AND PARTICIPANTS: This secondary analysis of the Global Network for Women's and Children's Health Research Aspirin Supplementation for Pregnancy Indicated Risk Reduction in Nulliparas (ASPIRIN) randomized, double-blinded, placebo-controlled clinical trial was conducted from March 2016 to June 2018. Statistical analyses were performed from June 2024 to June 2025. The study settings included the Democratic Republic of Congo, Zambia, Kenya, Guatemala, Pakistan, and Belagavi and Nagpur, …