Corrigendum to 'Preemptive anticoagulation during antenatal pulmonary embolism diagnostics in a community setting: retrospective cohort study': [Research and Practice in Thrombosis and Haemostasis Volume 9, Issue 1, January 2025, 102695].

[This corrects the article DOI: 10.1016/j.rpth.

Preemptive anticoagulation during antenatal pulmonary embolism diagnostics in a community setting: retrospective cohort study.

Background: Society recommendations for preemptive (or empiric) anticoagulation during antenatal pulmonary embolism (PE) diagnostics rely on expert opinion, which varies widely across guidelines. The American College of Chest Physicians (CHEST), for example, recommends preemptive anticoagulation when PE is highly suspected or when a delay in imaging is anticipated. The American College of Obstetricians and Gynecologists, however, makes no mention of preemptive anticoagulation for suspected PE in their practice bulletin on thromboembolism in pregnancy.

Consent to advanced imaging in antenatal pulmonary embolism diagnostics: Prevalence, outcomes of nonconsent and opportunities to mitigate delayed diagnosis risk.

Background: Nonconsent to pulmonary vascular (or advanced) imaging for suspected pulmonary embolism (PE) in pregnancy can delay diagnosis and treatment, increasing risk of adverse outcomes. We sought to understand factors associated with consent and understand outcomes after nonconsent.

Methods: This retrospective cohort study was undertaken across 21 community hospitals from October 1, 2021, through March 31, 2023.

Expanding outpatient management of low-risk pulmonary embolism to the pregnant population: a case series.

Background: Outpatient treatment of pregnant patients with acute pulmonary embolism (PE) is recommended by some obstetric and haematology societies but has not been described in the literature. Little is known about patient selection and clinical outcomes.

Case Summary: We report two cases of pregnant patients diagnosed with acute PE.

Erratum to 'Low gestational weight gain (+2.0 to 4.9 kg) for singleton-term gestations associated with favorable perinatal outcomes for all prepregnancy obesity classes' [AJOG Global Reports 3 (2023) 100246].

[This corrects the article DOI: 10.1016/j.xagr.

Low gestational weight gain (+2.0 to 4.9 kg) for singleton-term gestations associated with favorable perinatal outcomes for all prepregnancy obesity classes.

Background: Previous studies that evaluated low gestational weight gain or weight loss among prepregnancy obesity classes have not determined the amount of gestational weight gain associated with the lowest risk of adverse perinatal outcomes and neonatal morbidity among singleton term births.

Objective: This study aimed to evaluate the relationship of specific gestational weight gain categories of weight loss, stable weight, and low gain considered below the 2009 Institute of Medicine guidelines to perinatal outcomes and neonatal morbidity for singleton, term live births among prepregnancy obesity classes.

Study Design: This was a retrospective cohort study of 18,476 women among 3 classes of prepregnancy obesity, based on measured prepregnancy weight, and delivering a live singleton pregnancy at ≥37 weeks of gestation at a Kaiser Permanente Northern California hospital (2009-2012).

Perinatal outcomes and 2017 ACC/AHA blood pressure categories.

Objective: To evaluate the association of blood pressure category < 20 weeks according to the 2017 American College of Cardiology/American Heart Association (ACC/AHA) criteria with adverse perinatal outcomes.

Study Design: A retrospective cohort study of singleton deliveries between 1/2014 and 10/2017 was undertaken. Blood pressure category assigned by 2017 ACC/AHA criteria applied to blood pressures prior to 20 weeks gestation: normal (systolic < 120 and diastolic < 80), elevated blood pressure (systolic 120-129 and diastolic < 80 mmHg), stage 1 hypertension (systolic 130-139 and/or diastolic 80-89), stage 2 hypertension (prior diagnosis of chronic hypertension or systolic ≥ 140 or diastolic ≥ 90 mmHg).

The Case for Standardizing Cesarean Delivery Technique: Seeing the Forest for the Trees.

In this Commentary, we explain the case for a standardized cesarean delivery surgical technique. There are three strong arguments for a standardized approach to cesarean delivery, the most common major abdominal surgery performed in the world. First, standardization within institutions improves safety, efficiency, and effectiveness in health care delivery.

Is Preimplantation Genetic Testing Associated with Increased Risk of Abnormal Placentation After Frozen Embryo Transfer?

Objective: This study aimed to assess the association of preimplantation genetic testing (PGT) with abnormal placentation among a cohort of pregnancies conceived after frozen embryo transfer (FET).

Study Design: This is a retrospective cohort study of women who conceived via FET at the University of California, San Francisco from 2012 to 2016 with resultant delivery at the same institution. The primary outcome was abnormal placentation, including placenta accreta, retained placenta, abruption, placenta previa, vasa previa, marginal or velamentous cord insertion, circumvallate placenta, circummarginate placenta, placenta membranacea, bipartite placenta, and placenta succenturiata.

Gender Differences in Academic Rank and NIH Funding among Academic Maternal-Fetal Medicine Physicians in the United States.

Objective: This article evaluates gender differences in academic rank and National Institutes of Health (NIH) funding among academic maternal-fetal medicine (MFM) physicians.

Study Design: This was a cross-sectional study of board-certified academic MFM physicians. Physicians were identified in July 2017 from the MFM fellowship Web sites.

Intrahepatic cholestasis of pregnancy: Review of six national and regional guidelines.

Intrahepatic cholestasis of pregnancy (ICP) is a poorly understood disease of the late second or third trimester of pregnancy, typically associated with rapid resolution following delivery. It is characterized by pruritis, elevated serum bile acids, and abnormal liver function tests and has been linked to stillbirth, meconium passage, respiratory distress syndrome and fetal asphyxial events. The incidence is highly variable, dependent both on the ethnic makeup of the population as well as the diagnostic criteria being used.

Peripartum Morbidity after Cesarean Delivery for Arrest of Dilation at 4 to 5 cm Compared with 6 to 10 cm.

Objective: Given that recent consensus guidelines established to decrease cesarean delivery (CD) rates use 6 cm to define the onset of the active phase of labor, our objective was to evaluate maternal and neonatal outcomes after CD for the indication of arrest of dilation at 4 to 5 cm compared with ≥ 6 cm.

Study Design: We performed a secondary analysis using data from the Maternal Fetal-Medicine Units Network Cesarean Registry. We included nulliparous women with term, singleton, vertex gestations who underwent primary CD for arrest of dilation.

Prenatal Diagnosis of Congenital Diaphragmatic Hernia: Does Laterality Predict Perinatal Outcomes?

Objective: The objective of this study was to examine laterality as a predictor of outcomes among fetuses with prenatally diagnosed congenital diaphragmatic hernia (CDH).

Methods: This is a retrospective cohort study of pregnancies with CDH evaluated at our center from 2008 to 2016 compared cases with right-sided CDH (RCDH) versus left-sided CDH (LCDH). The primary outcome was survival to discharge.

Prevention of RhD Alloimmunization: A Comparison of Four National Guidelines.

Objective:  The objective of this study was to compare national guidelines on the prevention of RhD alloimmunization.

Study Design:  We performed a review of four national guidelines on prevention of alloimmunization from the American Congress of Obstetricians and Gynecologists, Royal College of Obstetricians and Gynaecologists, Society of Obstetricians and Gynaecologists of Canada, and The Royal Australian and New Zealand College of Obstetricians and Gynaecologists. We compared the indications/contraindications, timing, dosing, formulation and route of anti-D immune globulin, and management of unique circumstances.

Insulin Delivery Method and Admission for Glycemic Control in Pregnant Women with Type 1 Diabetes Mellitus.

Objective:  To determine if there was a difference in glycemic control admissions or perinatal outcomes in women with type 1 diabetes mellitus (DM) treated with multiple daily injections (MDIs) versus continuous subcutaneous insulin infusion (CSII).

Materials And Methods:  This was a retrospective cohort study of women with type 1 DM with a singleton gestation who delivered between 2006 and 2014 at a tertiary hospital and received care at a dedicated DM clinic. Women who used MDI were compared with those who used CSII.

Prenatal Care Adherence and Neonatal Intensive Care Unit Admission or Stillbirth among Women with Gestational and Preexisting Diabetes Mellitus.

Objective:  To determine if there was an association between prenatal care adherence and neonatal intensive care unit (NICU) admission or stillbirth, and adverse perinatal outcomes in women with preexisting diabetes mellitus (DM) and gestational DM (GDM).

Materials And Methods:  This is a retrospective cohort study among women with DM and GDM at a Diabetes in Pregnancy Program at an academic institution between 2006 and 2014. Adherence with prenatal care was the percentage of prenatal appointments attended divided by those scheduled.

Cerclage Use: A Review of 3 National Guidelines.

Importance: Preterm birth is a major contributor to perinatal morbidity and mortality. The most common intervention performed to improve perinatal outcomes for a woman experiencing cervical dilation in the second trimester without signs or symptoms of preterm labor is the cerclage.

Objective: We sought to review and compare available national guidelines on cerclage use.

Cervical Cerclage During Periviability: Can We Stabilize a Moving Target?

The American College of Obstetricians and Gynecologists and the Society for Maternal-Fetal Medicine recently published consensus guidelines on periviable birth recommending that obstetric interventions (antenatal corticosteroids, tocolysis, magnesium sulfate, antibiotics for preterm premature rupture of membranes or group B streptococcus prophylaxis, and cesarean delivery for fetal indications) may be considered at 23 0/7 weeks of gestation and neonatal resuscitation at 22 0/7 weeks of gestation. Cervical cerclage significantly decreases preterm delivery and improves perinatal outcomes in women with a singleton pregnancy, prior spontaneous preterm birth, and transvaginal cervical length less than 25 mm before 24 0/7 weeks of gestation or in women who experience painless cervix dilation in the second trimester. Randomized trials assessing ultrasonogram-indicated and physical examination-indicated cerclage report a procedure-related complication rate of 0.

Restriction of oral intake during labor: whither are we bound?

In 1946, Dr Curtis Mendelson suggested that aspiration during general anesthesia for delivery was avoidable by restricting oral intake during labor. This suggestion proved influential, and restriction of oral intake in labor became the norm. These limitations may contribute to fear and feelings of intimidation among parturients.

Evidence-Based Cesarean Delivery for the Nonobstetrician.

Cesarean delivery (CD) is one of the most common major surgeries performed in the United States and worldwide. Surgical techniques evaluated in well-designed randomized controlled trials (RCTs) that demonstrate maternal benefit should be incorporated into practice. The objective of this review is to provide a summary of surgical techniques of the procedure and review the evidence basis for them for the nonobstetrician.