Publications by authors named "Biron-Shental T"

Purpose: To evaluate the association between lateral placentation and adverse perinatal outcomes, including rates of small for gestational age (SGA) neonates, hypertensive (HTN) disorders, and preterm delivery, as well as postpartum hemorrhage and retained placenta.

Methods: This retrospective cohort study included all women with singleton pregnancies who underwent a trial of labor after reaching 24 weeks of gestation, at a single tertiary medical center, over a period of 6 years. The study group included women with lateral placentation.

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Background: Asthma, allergic rhinitis, atopic dermatitis, and food allergy are type 2 inflammation diseases. Since the 1960s, the prevalence of those diseases has steadily increased, presumably due to the "Hygiene hypothesis" which suggests that early exposure of infants to pathogens, siblings, and environmental dust, has a protective effect against the development of allergic diseases. The COVID-19 pandemic increased environmental hygiene due to lockdowns, masks, and social distancing.

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Article Synopsis
  • The study aimed to determine if eating during labor affects outcomes by comparing food consumption to clear fluids in laboring patients.
  • 129 healthy patients were randomized into two groups: one allowed to eat and the other restricted to clear fluids, with various maternal and neonatal outcomes measured.
  • Results showed no significant differences in complications, labor progression, or outcomes between the two groups, leading to the conclusion that eating during labor is generally safe but should be approached cautiously based on individual patient risk factors.
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Purpose: To compare the immediate and late complications associated with emergent cesarean sections (CS) performed during the first and second stages of active labor.

Methods: We conducted a retrospective analysis of electronic medical records from a single academic center, including data from 577 patients who underwent emergent cesarean sections at 4 cm or more of cervical dilatation. Patients were divided into two groups: those who had CS during the first stage of labor (4-9 cm dilatation) and those who had CS at complete dilatation (10 cm).

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Article Synopsis
  • Galactin-3 is involved in crucial reproductive processes like oocyte maturation and implantation, and its expression may predict successful embryo implantation during IVF.
  • A study involving 21 women undergoing IVF measured Galactin-3 levels in blood and follicular fluid at various stages of the IVF cycle.
  • Results showed that higher Galactin-3 levels on the trigger day were associated with successful pregnancies, suggesting its role in fertility and the impact of inflammation on IVF success.
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Problem: Accelerated placental aging is linked to abnormal fetal growth, preeclampsia (PE), and preterm birth (PTB). NANOG, a transcription factor, is known for its role in cellular reprogramming, self-renewal, and clonogenic growth. Its expression is regulated by Kruppel-like factor 4 (KLF4), which functions as both a transcriptional activator and repressor.

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Purpose: Meconium-stained amniotic fluid (MSAF) often signifies colonization of the amniotic sac by microorganisms. This study investigated additional adverse obstetric outcomes associated with MSAF in deliveries complicated by maternal intrapartum fever (IF).

Methods: This retrospective study included all singleton pregnancies from 2014 to 2020, with intrapartum maternal fever ≥ 38 °C during a trial of labor.

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Purpose: This study's objective is to investigate disparities in the rates of gestational diabetes mellitus (GDM) diagnosis, influenced by the timing of the glucose challenge test GCT.

Methods: This retrospective cohort study included women with singleton or twin pregnancies exhibiting abnormal GCT result between 24 and 28 weeks of gestation, followed by an oral glucose tolerance test OGTT during the same period. Data regarding pregnancy follow-up from patients' deliveries at a singular tertiary medical from 2014 to 2022 were retrieved.

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Purpose: Fetal sex is independently associated with pregnancy complications and impacts neonatal outcomes. Evidence suggests that females have an advantage over males, with a better outcome in the perinatal period. In addition, fetal outcome in twin gestations is also related to the intrauterine position of the fetus, such as the first, the presenting or second twin.

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Background: Social, familial, and physiological stressors may put maternal-infant bonding at risk. Therefore, it is plausible that the stressful conditions brought on by COVID-19 could influence maternal-infant bonding. This study aimed to elucidate the contribution of COVID-19-related experience to variance in maternal-infant bonding, beyond that of established risk factors and as moderated by social support.

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Uterine rupture is a rare, but dangerous obstetric complication that can occur during trial of vaginal birth. The aim of this study was to evaluate the relationship between peripartum infection at the first caesarean delivery to uterine dehiscence or rupture at the subsequent delivery. We conducted a retrospective case-control study from March 2014 to October 2020 at a single academic medical center.

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Purpose: To study the effect of decreased estimated fetal weight (EFW) percentiles in appropriate for gestational age fetuses.

Methods: This retrospective cohort study included women who had second and third trimester ultrasound examinations. Delivery and neonatal outcomes of pregnancies with decreased EFW of ≥  30 percentiles in EFW between ultrasound examinations (decreased growth group) and those without such a decrease (control group) were compared.

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Background: Fetal growth restriction (FGR) is a pregnancy complication in which a newborn fails to achieve its growth potential, increasing the risk of perinatal morbidity and mortality. Chronic maternal gestational hypoxia, as well as placental insufficiency are associated with increased FGR incidence; however, the molecular mechanisms underlying FGR remain unknown.

Methods: Pregnant mice were subjected to acute or chronic hypoxia (12.

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Objective: To determine if there is a correlation between maternal short stature and neonatal birth weight among women with adverse outcomes related to labor dystocia.

Methods: The medical records of singleton deliveries with adverse obstetric outcomes related to labor dystocia during 2014-2020, in a single tertiary center, were reviewed. Outcomes included at least one of the following: cesarean delivery (CD) due to cephalopelvic disproportion (CPD), prolonged second stage, shoulder dystocia, third- or fourth-degree perineal tear.

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Objective: To characterize obstetric outcomes and the association with umbilical cord (UC) complications among women complaining of reduced fetal movements (RFMs).

Methods: This retrospective cohort compared women with a perception of RFMs within 2 weeks prior to delivery with women who reported no changes in fetal movements in terms of maternal characteristics and neonatal outcomes. A primary outcome of UC complications at delivery was defined.

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Background: Labor progression curves are believed to differ between spontaneous and induced labors. However, data describing labor progression patterns with different modes of induction are insufficient.

Objective: This study aimed to compare the progress patterns between labors induced with slow-release prostaglandin E vaginal analogue and those induced with a double-balloon catheter.

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Post-traumatic stress symptoms (PTSS) following childbirth are common within a stressful environment and are mitigated by social support. During the COVID-19 pandemic, an increase in such symptoms has been reported. The current study aims to longitudinally model the influence of general and pandemic-specific risk and protective factors on the temporal unfolding of symptoms among postpartum women.

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Information on the effect of bloody amniotic fluid during labor at term is scarce. This study assessed risk factors and adverse outcomes in labors with bloody amniotic fluid. During the six years of this study, all nulliparas in our institution, with a trial of labor, were included.

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Article Synopsis
  • The velocity time integral (VTI) is a Doppler ultrasound measurement used to evaluate blood flow, specifically looking at the middle cerebral artery (MCA) in fetuses affected by maternal alloimmunization.
  • This study analyzed 255 Doppler examinations across different gestational weeks and found that VTI increases as pregnancy progresses, with significant differences in values when comparing fetuses with suspected anemia to those without.
  • The findings suggest that higher VTI in fetuses may indicate increased blood flow to the brain, potentially serving as a new marker for detecting fetal anemia.
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Background: Immunoglobulin (Ig)E-mediated food allergy is a growing health problem affecting up to 10% of children. It is well-established that early introduction to peanuts and eggs from 4 months of age has a preventive effect. In contrast, there is no consensus about the effect of breastfeeding on food allergy development.

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We aimed to investigate the correlation between total deceleration area (TDA), neonatal birthweight and neonatal acidemia in vacuum extractions (VEs). This is a retrospective study in a tertiary hospital, including VE performed due to non-reassuring fetal heart rate (NRFHR). Electronic fetal monitoring during the 120 min preceding delivery was interpreted by two obstetricians who were blinded to neonatal outcomes.

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Objective: To define the natural course and complications, and develop a model for predicting persistency when low-lying placenta (LLP) is detected early in pregnancy.

Methods: This retrospective cohort study included women with LLP detected during an early anatomic scan performed at 13-16 weeks gestation. Additional transvaginal ultrasound exams were assessed for resolution at 22-24 weeks and 36-39 weeks.

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Study Objective: To create a decision support tool based on machine learning algorithms and natural language processing (NLP) technology, to augment clinicians' ability to predict cases of suspected adnexal torsion.

Design: Retrospective cohort study SETTING: Gynecology department, university-affiliated teaching medical center, 2014-2022.

Patients: This study assessed risk-factors for adnexal torsion among women managed surgically for suspected adnexal torsion based on clinical and sonographic data.

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Objective: To evaluate potential risk factors for retained placenta in a first pregnancy.

Method: This retrospective case-control study included all primigravida with a singleton, live, vaginal birth at 24 weeks or later, at a tertiary hospital, 2014-2020. The cohort was divided into those with retained placenta versus controls.

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