Association between interpregnancy interval and adverse perinatal outcomes among subsequent twin pregnancies: a nationwide population-based study.

Background: The existing evidence on the association between interpregnancy interval (IPI) and pregnancy outcomes primarily focuses on singleton pregnancies, with limited research on twin pregnancies.

Objective: This study aimed to investigate the association between IPI and adverse perinatal outcomes in twin pregnancies.

Study Design: This population-based, retrospective cohort study analyzed data from the National Center for Health Statistics in the United States between 2016 and 2020.

Optimal gestational weight change associated with improved perinatal outcomes in women with gestational diabetes mellitus: a population-based study in the United States.

Background: Optimal gestational weight change (GWC) is little known among pregnant women with gestational diabetes mellitus (GDM).

Objectives: This study aimed to explore the optimal GWC ranges for women with GDM and validate these ranges compared with the Institute of Medicine (IOM) guidelines.

Methods: A population-based cohort study using natality data from the National Center for Health Statistics in the United States included 1,338,460 mother-infant pairs with GDM from 2014 to 2020.

Prevalence of placenta previa among deliveries: An update systematic review and meta-analysis after the introduction of the two-child policy in Mainland China.

Background: As birth policy can affect maternal and infant health, we sought to identify whether and how the introduction of the two-child policy might have affected the prevalence of placenta previa in pregnant women in mainland China.

Methods: In this update meta-analysis and systematic review, we searched PubMed, Web of Science, the Cochrane Library, Weipu, Wanfang, and the China National Knowledge Infrastructure (CNKI) databases for studies evaluating the prevalence of placenta previa in China published between the inception of each database and March 2024, with no restrictions. Two investigators independently extracted the data from each included study.

MR Diffusion-Weighted Imaging in Evaluating Immediate HIFU Treatment Response of Uterine Fibroids.

Background: Nowadays, High Intensity Focused Ultrasound (HIFU) is a common surgery option for the treatment of uterine fibroids in China, the immediate response of which is clinically evaluated using Contrast Enhanced (CE) imaging. However, the injection of gadolinium with its potential adverse effect is of concern in CE and therefore, it deserves efforts to find a better imaging method without the need for contrast agent injection for this task.

Objective: To assess the role of diffusion-weighted imaging (DWI) in evaluating the immediate therapeutic response of HIFU treatment for uterine fibroids in comparison with CE.

Preferences of pregnant individuals to undergo labor after one cesarean in southern China.

Background: Labor after cesarean (LAC) remains an optional delivery method among healthy pregnant individuals. Exploring women's attitudes, preferences, reasons for previous cesarean delivery, and the incentives underlying pregnant individuals' preferences could help us understand their choice of delivery mode. In this study we evaluated the preferences and attitudes of eligible pregnant women regarding participation in a LAC in Foshan, China.

Role of breastfeeding on maternal and childhood cancers: An umbrella review of meta-analyses.

Background: Multiple studies and meta-analyses have claimed that breastfeeding is inversely correlated with maternal and childhood cancers. These results could either be causal or confounded by shared risk factors. By conducting an umbrella review, we aimed to consolidate the relationship between breastfeeding and maternal and childhood cancers.

Prediction of vaginal birth after cesarean in China.

Objective: This study aimed to develop and validate a prediction model of vaginal birth after cesarean delivery (VBAC) in China.

Methods: A nomogram for effective prediction of VBAC of singleton, cephalic and one previous low-transverse cesarean section deliveries was created by comparing the combinations of ultrasonographic and non-ultrasonographic factors from five hospitals between 2018 and 2019.

Results: A total of 1066 women were included.

Walking or jogging during pregnancy increases the success rate of vaginal birth after cesarean delivery: A multicenter, retrospective cohort study.

Objective: Exercise during pregnancy has been proven to reduce the risk of cesarean delivery. However, few studies have examined the relationship between walking or jogging during pregnancy and the success rate of vaginal birth after cesarean delivery (VBAC). This multicenter, retrospective cohort study aimed to determine the association between walking or jogging during pregnancy and the success rate of VBAC in women who underwent a trial of labor after cesarean delivery.

Blood Type and Outcomes in Pregnant Women with Placenta Previa.

Background: Placenta previa increases the risks of obstetrical complications. Many studies have reported a link between various ABO blood types and pregnancy complications. This study is aimed at describing and comparing the characteristics and outcomes of women with placenta previa by ABO blood type.

Optimal gestational weight gain in women with twin pregnancies and gestational diabetes mellitus: a population-based study in the United States.

Background: There is limited evidence regarding optimal gestational weight gain in women with twin pregnancies and gestational diabetes mellitus.

Objective: This study aimed to examine the association between gestational weight gain and perinatal outcomes among women with gestational diabetes mellitus and twin pregnancies and to explore the gestational weight gain targets by prepregnancy body mass index category.

Study Design: A national population-based cohort study of twin pregnancies with gestational diabetes mellitus was conducted between 2014 and 2020.

Perinatal outcomes among twin pregnancies with gestational diabetes mellitus: A nine-year retrospective cohort study.

Objective: To compare the outcomes between gestational diabetes mellitus (GDM) vs. non-GDM twin gestations.

Methods: A retrospective cohort study of 2,151 twin pregnancies was performed in a tertiary hospital in Foshan, China, 2012-2020.

Spectrum of ophthalmic diseases in children hospitalized in a tertiary ophthalmology hospital in China from 2010 to 2019.

Background: Describing the pattern of pediatric eye diseases is necessary for appropriate eye care in children. This study explored the spectrum and characteristics of pediatric ophthalmic diseases in a typical tertiary ophthalmology hospital in China.

Methods: A retrospective study was conducted at a tertiary ophthalmology hospital between 2010 and 2019 in Guangzhou, China.

Association of Optimal Gestational Weight Gain Ranges With Perinatal Outcomes Across Body Mass Index Categories in Twin Pregnancies.

Importance: The existing gestational weight gain (GWG) recommendations for twin pregnancies are lacking for underweight individuals and are not stratified by obesity class.

Objective: To identify optimal GWG ranges associated with reduced adverse perinatal outcomes stratified by prepregnancy body mass index (BMI) categories in twin pregnancies.

Design, Setting And Participants: This population-based cohort study of twin pregnancies using data from the National Center for Health Statistics was conducted between January 1, 2014, and December 31, 2018.

Assessment of different thresholds of birthweight discordance for early neonatal outcomes: retrospective analysis of 2348 twin pregnancies.

Background: The optimal threshold of birthweight discordance (BWD) remains controversial. This study aimed to evaluate the associations between BWD at different thresholds and early neonatal outcomes and to assess their predictive accuracy.

Methods: This was a retrospective cohort study using a birthweight data with the chorionicity information of 2348 liveborn twin pairs at a gestational age of ≥26 weeks, from 2012 to 2018.

Is there an optimal inter-delivery interval in women who underwent trial of labor after cesarean delivery (TOLAC)?

Background: Inter-delivery interval (IDI) has been proven to be a factor associated with adverse maternal and neonatal outcomes. However, the optimal IDI in trial of labor after cesarean delivery (TOLAC) remains unclear. We aimed to investigate the association between IDI and major maternal and neonatal outcomes in women who underwent TOLAC.

Double-uterine-incision in the management of placenta previa complicated by placenta accreta spectrum.

Objective: To compare the effectiveness of a new double-uterine-incision, based on Ar's incision, with single-uterine-incision during cesarean section in pregnancy concurrently complicated by placenta previa and placenta accreta spectrum.

Methods: A retrospective cohort study including 260 participants was conducted between January 2014 and June 2019. The participants only underwent Ar's incision in the single-uterine-incision group and participants underwent two uterine incisions in the new double-uterine-incision group.

Fasting Plasma Glucose Mediates the Prospective Effect of Maternal Metal Level on Birth Outcomes: A Retrospective and Longitudinal Population-Based Cohort Study.

Objective: Previously, we found that the presence of maternal serum metals before the 24th week of gestation prospectively increased fasting plasma glucose (FPG) at 24-28 weeks. We further explored the prospective association between levels of metals and neonatal outcomes and assessed the mediating effects of FPG on these relationships.

Methods: A total of 7,644 pregnant women were included in a retrospective cohort study, and the relationships between metals [manganese (Mn), copper (Cu), lead (Pb), zinc (Zn), and magnesium (Mg)] and birth outcomes were explored.

Anesthetic management in cesarean delivery of women with placenta previa: a retrospective cohort study.

Background: The incidence of placenta preiva is rising. Cesarean delivery is identified as the only safe and appropriate mode of delivery for pregnancies with placenta previa. Anesthesia is important during the cesarean delivery.

Changes in lower uterine segment thickness during different gestational weeks in pregnant women qualified for trial of labor after cesarean section.

Objective: To investigate the correlation between lower uterine segment thickness (LUST) and gestational weeks (GW) in women who attempted trial of labor after cesarean section (TOLAC) and to estimate the reference ranges of LUST.

Methods: A prospective cohort study was conducted between January 2019 and December 2020 at a tertiary-care center in Foshan, China. A total of 2588 women who attempted TOLAC were included.

Maternal and Neonatal Outcomes of Placenta Previa with and without Coverage of a Uterine Scar: A Retrospective Cohort Study in a Tertiary Hospital.

Background: To compare the maternal and neonatal outcomes of placenta previa (PP) with and without coverage of a uterine scar in Foshan, China.

Methods: A retrospective cohort study comparing all singleton pregnancies with PP was conducted at a tertiary, university-affiliated medical center from 1 January 2012 to 31 April 2017 in Foshan, China. Demographic, clinical and laboratory data were extracted from electronic medical records (EMRs).

Should singleton birth weight standards be applied to identify small-for-gestational age twins?: analysis of a retrospective cohort study.

Background: Twin birth weight percentiles are less popular in clinical management among twin pregnancies compared with singleton ones in China. This study aimed to compare the incidence and neonatal outcomes of small for gestational age (SGA) twins between the use of singleton and twin birth weight percentiles.

Methods: This was a retrospective cohort study of 3,027 pregnancies with liveborn twin pairs at gestational age of > 28 weeks.

Prevalence of and Risk Factors for Poor Sleep During Different Trimesters of Pregnancy Among Women in China: A Cross-Sectional Study.

Background: The management of poor sleep during pregnancy is important for maternal and foetal health. The aim of the present study was to investigate the prevalence of poor sleep quality and risk factors for poor sleep during different trimesters of pregnancy for better management of sleep during pregnancy.

Methods: A cross-sectional study was conducted among pregnant women in Foshan Women's and Children's Hospital.

Maternal and neonatal outcomes in transverse and vertical skin incision for placenta previa : Skin incision for placenta previa.

Background: Placenta previa, a serious obstetric issue, should be managed by experienced teams. The safe and appropriate mode of delivery for placenta previa is by cesarean delivery. However, no studies were found comparing either maternal or neonatal outcomes for different skin incision in women with placenta previa.

The association of hypertensive disorders of pregnancy with small for gestational age and intertwin birthweight discordance.

Available evidence shows conflicting results regarding the association between hypertensive disorders of pregnancy (HDPs)/preeclampsia (PE) and small for gestational age (SGA) and birthweight discordance (BWD). This retrospective study of 2131 twin pregnancies aimed to evaluate the association of HDPs/PE with the presence of SGA and BWD. The eligible pregnancies were categorized into four study groups: concordant pairs without SGA fetuses, discordant pairs without SGA fetuses, concordant pairs with SGA fetuses, and discordant pairs with SGA fetuses.