Analysis of risk factors for the recurrence of gestational diabetes in subsequent pregnancy: A nationwide population-based study in South Korea.

We compared the obstetric and neonatal outcomes of women with and without gestational diabetes recurrence during subsequent pregnancy and identified the risk factors for gestational diabetes recurrence. In this nationwide population-based study, we analyzed pregnant women and their neonates delivered in Korea between January 2015 and December 2021 using the Korea National Health Insurance claims and National Health-Screening Program for Infants and Children databases. In total, 1985,678 pregnant women were analyzed, of whom 15,086 were diagnosed with gestational diabetes in their first pregnancy.

Long-Term Neurodevelopmental Outcomes After Antenatal Corticosteroid Therapy in Late Preterm Twins: A Nationwide Retrospective Cohort Study.

Background: In women with singleton pregnancy who are at risk of late preterm delivery, administration of antenatal corticosteroids is recommended to reduce neonatal respiratory complications. However, the adoption of this practice is not widely accepted in twin pregnancies because of a lack of evidence regarding both the effectiveness and long-term safety of corticosteroids. This study was conducted to evaluate the long-term neurodevelopmental outcomes of twins according to the administration of antenatal corticosteroid in late preterm.

Association between ovarian hyperstimulation syndrome and adverse obstetric and neonatal outcomes in Korea: a nationwide health insurance database study.

Purpose: To investigate the association of ovarian hyperstimulation syndrome (OHSS) and adverse maternal and neonatal outcomes.

Methods: This retrospective study used combined Korea National Health Insurance (KNHI) claims and National Health Screening Program for Infants and Children data. Women who gave birth through in vitro fertilization using fresh embryo transfer during 2017-2022 were enrolled.

Role of Cervical Elastography in Predicting Progression to Active Phase in Labor Induction in Term Nulliparous Women.

Several factors, such as age, parity, body mass index, a favorable cervix, and fetal birth weight, are known to be related to the success of labor induction. With advancements in ultrasound technology, these factors have been studied to predict the success of vaginal delivery. However, there has been limited research on ultrasound measures that can effectively predict entry into the active phase of labor.

A comparison of short- and long-term prognoses between cases with and without antenatal corticosteroid administration in late preterm delivery: a nationwide population-based study.

Background: There is a paucity of information concerning the short- and long-term benefits and harm of antenatal corticosteroid administration and of expanded corticosteroid administration with dexamethasone in the late preterm period. Thus, we aimed to compare the effect on short-term respiratory complications, hypoglycemia, and long-term neurodevelopmental disorders in neonates born in the late preterm period between cases with and without corticosteroid administration and evaluate the difference in effects according to the type of corticosteroid administered.

Methods: This retrospective observational cohort study included all women who had a singleton delivery in the late preterm period between January 2007 and December 2015.

Maternal and Neonatal Outcomes Based on Changes in Glycosylated Hemoglobin Levels During First and Second Trimesters of Pregnancy in Women with Pregestational Diabetes: Multicenter, Retrospective Cohort Study in South Korea.

This study compared glycosylated hemoglobin (HbA1c) levels in the first and second trimesters of pregnancy and assessed maternal and neonatal outcomes according to HbA1c variations among women with pregestational diabetes. This retrospective, multicenter Korean study involved mothers with diabetes who had given birth in 17 hospitals. A total of 292 women were divided into three groups based on HbA1c levels during the first and second trimesters: women with HbA1c levels maintained at <6.

The risk of pregnancy-related adverse outcomes after COVID-19 vaccination: Propensity score-matched analysis with influenza vaccination.

Introduction: Coronavirus 2019 (COVID-19) vaccination rates in pregnant women remain low owing to safety concerns. When evaluating vaccine safety, comparisons with unvaccinated individuals may lead to healthy vaccinee bias. This study aimed to investigate the association between mRNA-based COVID-19 vaccination and pregnancy-related adverse outcomes compared with influenza vaccination.

Temporal trends in the prevalence, incidence, and mortality of cardiac amyloidosis in Korea over 12 years.

Objectives: This study investigated the prevalence, incidence, and prognosis of cardiac amyloidosis (CA) in Korea.

Methods: This retrospective nationwide population-based study used the Health Insurance Review and Assessment Service databases between 2008 and 2020. All patients diagnosed with amyloidosis were included, and those with a diagnosis of heart failure or cardiomyopathy were classified as having CA.

The Role of Prolactin in Amniotic Membrane Regeneration: Therapeutic Potential for Premature Rupture of Membranes.

Premature rupture of membranes (PROM) is defined as rupture of fetal membranes before the onset of labor. Prolactin (PRL) is secreted by decidual membranes and accumulated significantly in the amniotic fluid during pregnancy. PRL could ameliorate inflammation and collagen degradation in fetal membranes.

The impact of the COVID-19 pandemic on infant obesity: A nationwide retrospective cohort study.

Background: Lifestyle changes, such as those related to the COVID-19 pandemic, including alterations in physical activity and dietary habits, are known to affect pregnancy outcomes. In particular, suboptimal intrauterine conditions during pregnancy are known to influence not only fetal growth but also growth during infancy. However, research on the impact of the environmental changes caused by the COVID-19 pandemic on the growth of infants and children during their early years is lacking.

Congenital Anomalies in Multiple Pregnancy: A Literature Review.

Importance: Multiple pregnancy is relatively common in many countries and is associated with various pregnancy complications, including preterm birth, low birth weight, and congenital anomalies. In particular, a poorer prognosis has been reported when congenital anomalies overlap with other pregnancy complications in multiple pregnancy compared with singleton pregnancy.

Objective: This study reviews the characteristics of congenital anomalies that occur in multiple gestations as compared with singleton pregnancies.

Correction: Park et al. Effect of Particulate Matter 2.5 on Fetal Growth in Male and Preterm Infants through Oxidative Stress. 2023, , 1916.

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The Risk of Hypertension and Diabetes Mellitus According to Offspring's Birthweight in Women With Normal Body Mass Index: A Nationwide Population-Based Study.

Background: Maladaptation to vascular, metabolic, and physiological changes during pregnancy can lead to fetal growth disorders. Moreover, adverse outcomes during pregnancy can further increase the risk of cardiovascular and metabolic diseases in mothers. Delivering a large-for-gestational-age (LGA) baby may indicate a pre-existing metabolic dysfunction, whereas delivering a small-for-gestational-age (SGA) baby may indicate a pre-existing vascular dysfunction.

Short-term neonatal and long-term neurodevelopmental outcome of children born term low birth weight.

This study aimed to examine the impact of term LBW on short-term neonatal and long-term neurodevelopmental outcomes in children 5-7 years of age. This is a population-based cohort study that merged national data from the Korea National Health Insurance claims and National Health Screening Program for Infants and Children. The participants were women who gave birth at a gestational age of ≥ 37 weeks between 2013 and 2015 in the Republic of Korea, and were tracked during 2020 for the neurodevelopmental surveillance of their children.

Urinary metabolite biomarkers of pregnancy complications associated with maternal exposure to particulate matter.

Particulate matter 2.5 (PM2.5) is associated with reproductive health and adverse pregnancy outcomes.

The Role of the Aryl Hydrocarbon Receptor in Vascular Factors Related to Preeclampsia in a Smoking Mouse Model.

Smoking cigarettes is known to lower the risk of preeclampsia. The objective of this study is to evaluate the effect of smoking on the expression of soluble FMS-like tyrosine kinase-1 (sFlt-1), vascular endothelial growth factor (VEGF), and endoglin (sEng)-1 and the role of the aryl hydrocarbon receptor (AhR) in pregnant mice. We developed a smoking mouse model using a gas-filling system.

Fasting glucose variability and risk of dementia in Parkinson's disease: a 9-year longitudinal follow-up study of a nationwide cohort.

Background: Diabetes is associated with an increased risk of Parkinson's disease dementia (PDD); however, it is unknown whether this association is dependent on continuous hyperglycemia, hypoglycemic events, or glycemic variability. We aimed to investigate the relationship between visit-to-visit fasting glucose variability and PDD development in patients with Parkinson's disease (PD).

Methods: Using data from the Korean National Health Insurance Service, we examined 9,264 patients aged ≥40 years with Parkinson's disease (PD) who underwent ≥3 health examinations and were followed up until December 2019.

Maternal PM2.5 exposure is associated with preterm birth and gestational diabetes mellitus, and mitochondrial OXPHOS dysfunction in cord blood.

Maternal exposure to fine particulate matter (PM) is associated with adverse pregnancy and neonatal health outcomes. To explore the mechanism, we performed mRNA sequencing of neonatal cord blood. From an ongoing prospective cohort, Air Pollution on Pregnancy Outcome (APPO) study, 454 pregnant women from six centers between January 2021 and June 2022 were recruited.

Association between cardiac arrhythmia before pregnancy and gestational diabetes: a nationwide population-based study in Korea.

Given the higher prevalence of cardiac arrhythmias in individuals with diabetes, we investigated the relationship between cardiac arrhythmias and the incidence of gestational diabetes (GDM). This retrospective cohort study utilized data from the Korean Health Insurance Service database, encompassing 1,113,729 women who gave birth between January 2007 and December 2015. After excluding those who did not undergo National Health Screening tests within 1 year prior to pregnancy, those with multifetal pregnancies, and those diagnosed with diabetes, we analyzed 365,880 singleton pregnancies without a history of diabetes.

Headaches during pregnancy and the risk of subsequent stroke.

Background: Primary headache disorder is a known risk factor for stroke in women and usually improves during the first trimester of pregnancy. However, despite this, some women develop headaches during pregnancy (G-HA), and the effect of this headache on subsequent stroke is unknown. In this study, we evaluated the association between G-HA and stroke after delivery in women.

Effect of Tablet-based Cognitive Intervention on Cognition in Patients With Mild Cognitive Impairment: A Pilot Study.

Background And Purpose: Growing evidence has shown that cognitive interventions can mitigate cognitive decline in patients with mild cognitive impairment (MCI). However, most previous cognitive interventions have been group-based programs. Due to their intrinsic limitations, group-based programs are not widely used in clinical practice.