Premature Delivery Rate Research Articles

No improvement in pregnancy and perinatal outcomes with combined luteal support in modified natural cycle frozen embryo transfer

ObjectiveWe investigated whether the addition of a luteal phase support drug benefits pregnancy and perinatal outcomes in modified natural-cycle frozen-thawed embryo transfer (mNC-FET) for women up to the age of 35 years.MethodsWe analyzed the clinical data of 3658 mNC-FET cycles of women up to the age of 35 years from the Reproductive Center of the Third Affiliated Hospital of Zhengzhou University from January 2018 to December 2020 in a retrospective cohort study. The cycles were divided into three groups based on the luteal phase support protocol used. The patients in group A received a combination of progesterone soft capsules and dydrogesterone (882 cycles), those in group B received dydrogesterone only (627 cycles), and those in group C received a combination of progesterone vaginal sustained-release gel and dydrogesterone (2149 cycles). Pregnancy and perinatal outcomes were compared among the three groups.ResultsLogistic regression analysis indicated that the three luteal phase support regimens were not associated with the live birth rate [OR(95% CI)B vs A=1.080, p=0.960; OR(95% CI)B vs C=0.252, p=0.291]. There were no significant differences in the newborn weight, premature delivery rate, pregnancy complications rate, and incidence of birth defects among the three groups.ConclusionsIn the mNC-FET cycle, patients under the age of 35 who chose dydrogesterone alone as a luteal phase support drug exhibited no difference in the live birth rate and perinatal outcome from patients who combined dydrogesterone with progesterone soft capsules or with progesterone vaginal sustained-release gel. However, the outcome still requires confirmation by large-sample prospective studies.

Management of asthma in pregnancy.

Asthma is the most common chronic disease to affect pregnant women and can have a significant effect on pregnancy outcomes with increased rates of preterm birth, premature delivery and caesarean section observed if poorly controlled. Pregnancy can also influence asthma control. Prescribing in pregnancy causes anxiety for patients and healthcare professionals and can result in alteration or undertreatment of asthma. Good asthma control with prompt and adequate management of exacerbations is key to reducing adverse pregnancy outcomes for both mother and fetus. The majority of asthma treatment can be continued as normal in pregnancy and there is emerging evidence of the safety of biologic medications also. This article aims to summarise the current evidence about asthma in pregnancy and guide the appropriate management of this population.

Neonatal outcomes after intervention for suspected renal colic in pregnancy

ObjectiveTo compare neonatal outcomes following URS, stent, or PCN in pregnant women presenting with suspected renal colic. MethodsWomen undergoing a procedure for suspected renal colic during pregnancy at a large multi-center institution between 2008 and 2022 were retrospectively reviewed and categorized by initial intervention. Neonatal outcomes were recorded and linked to maternal and obstetric data. Groups were compared by a Kruskal-Wallis, ANOVA, or Fisher’s Exact test, followed by pairwise post-hoc testing as appropriate (α = 0.05). Multivariate analyses were also conducted. Results95 patients were analyzed, of whom 32 were managed with PCN, 47 with stent, and 16 with URS. Maternal baseline characteristics were similar between groups, except for lower gravidity and parity in the stent group. Rates of premature delivery did not differ, but gestational age at delivery was lower in the PCN group versus the stent and URS groups (p = 0.006 and p = 0.025, respectively). Neonatal Intensive Care Unit (NICU) admission rates were higher in the PCN group versus the stent and URS groups (p = 0.006 and 0.036, respectively). Respiratory distress syndrome significantly differed between groups (p = 0.041). Neonatal birth weight, Apgar scores, and other complications did not significantly differ. ConclusionThis study demonstrated higher rates of NICU admissions and lower gestational age at delivery for neonates born to mothers managed with PCN compared to stent and URS. Larger multi-institutional studies are warranted to further explore these associations.

Mood stabilizers for treatment of bipolar disorder in pregnancy and impact on neonatal outcomes.

Untreated bipolar disorder in pregnancy is associated with adverse maternal and neonatal outcomes. Despite advances in clinical management, there is concern among obstetric providers and patients about the safety of pharmacological agents for the treatment of bipolar disorder in pregnancy. Recent studies have shown atypical antipsychotics and lamotrigine to have a favorable safety profile; however, little information is published on lurasidone. The objective of this retrospective chart review was to evaluate pregnancy and neonatal outcomes in obstetric patients with bipolar disorder who are untreated, compared to those treated with lurasidone, other atypical antipsychotics, and lamotrigine at a tertiary teaching institution. This retrospective cohort study included neonates whose mothers had a diagnosis of bipolar disorder and were referred to the Maternal & Fetal Care Clinic with two documented visits after January 1, 2014, with delivery by October 31, 2017, within an SSM health-system hospital. In this study, women with untreated bipolar disorder (not on any mood stabilizer) in pregnancy had significantly higher rates of premature delivery and low birth weight compared to women on mood stabilizers of lamotrigine, lurasidone, and other atypical antipsychotics. No difference was observed for pregnancy or neonatal outcomes between patients taking any of the mood stabilizers. This study suggests that the use of lurasidone, other atypical antipsychotics, and lamotrigine have better neonatal outcomes than untreated bipolar disorder in pregnancy.

Non-criteria and criteria antiphospholipid antibodies and their association with pregnancy outcomes in women with a history of miscarriage: A retrospective study

IntroductionThe objective of this study was to investigate both antiphospholipid antibodies (aPLs) and non-criteria aPLs (NC-aPLs) in relation with pregnancy outcomes. MethodsWe retrospectively analyzed 1574 pregnant women with experienced at least one miscarriage who were tested for aPLs and NC-aPLs, and compared their clinical characteristics, immune biomarkers, and pregnancy outcomes. The χ2 test or Fisher’s exact test compared pregnancy outcomes among patients negative for all aPLs, positive for NC‑aPLs subtypes, and positive for criteria aPLs subtypes. ResultsMultivariate logistic regression analysis indicated that positive aPLs (OR = 2.216, 95 % CI 1.381–3.558), and positive NC-aPLs (OR = 1.619, 95 % CI 1.245–2.106) are linked to adverse outcomes. For fetal loss, positive aPLs (OR = 2.354, 95 % CI 1.448–3.829), NC-aPLs (OR = 1.443, 95 % CI 1.076–1.936) were significant. Premature delivery was associated with positive NC-aPLs (OR = 2.102, 95 % CI 1.452–3.043). In the NC-aPLs positive group, the rate of adverse outcomes was higher in the multiple-positive subgroup (77.8 %) compared to the double-positive (52.3 %) and single-positive (37.0 %) subgroups. The rates of fetal loss and premature delivery were also higher in the multiple-positive NC-aPLs subgroup compared to the single-positive subgroup (48.1 % vs. 22.6 % for fetal loss and 57.1 % vs. 16.5 % for premature delivery). DiscussionOur findings suggest that both aPLs and NC-aPLs are associated with an increased incidence of adverse pregnancy outcomes, and patients presenting with multiple NC-aPLs positivity were found to have a higher incidence of adverse outcomes compared to their single-positive counterparts.

Pregnancy outcomes of monochorionic diamniotic and dichorionic diamniotic twin pregnancies conceived by assisted reproductive technology and conceived naturally: a study based on chorionic comparison

ObjectiveTo evaluate monochorionic diamniotic (MCDA) and dichorionic diamniotic (DCDA) twin pregnancies conceived by assisted reproductive technology (ART) and conceived naturally.MethodsWe retrospectively analyzed the data on twin pregnancies conceived by ART from January 2015 to January 2022,and compared pregnancy outcomes of MCDA and DCDA twins conceived by ART with those of MCDA and DCDA twins conceived naturally, pregnancy outcomes between MCDA and DCDA twins conceived by ART, and pregnancy outcomes of DCT and TCT pregnancies reduced to DCDA pregnancies with those of DCDA pregnancies conceived naturally.ResultMCDA pregnancies conceived by ART accounted for 4.21% of the total pregnancies conceived by ART and 43.81% of the total MCDA pregnancies. DCDA pregnancies conceived by ART accounted for 95.79% of the total pregnancies conceived by ART and 93.26% of the total DCDA pregnancies. Women with MCDA pregnancies conceived by ART had a higher premature delivery rate, lower neonatal weights, a higher placenta previa rate, and a lower twin survival rate than those with MCDA pregnancies conceived naturally (all p < 0.05). Women with DCDA pregnancies conceived naturally had lower rates of preterm birth, higher neonatal weights, and higher twin survival rates than women with DCDA pregnancies conceived by ART and those with DCT and TCT pregnancies reduced to DCDA pregnancies (all p < 0.05).ConclusionOur study confirms that the pregnancy outcomes of MCDA pregnancies conceived by ART are worse than those of MCDA pregnancies conceived naturally. Similarly, the pregnancy outcomes of naturally-conceived DCDA pregnancies are better than those of DCDA pregnancies conceived by ART and DCT and TCT pregnancies reduced to DCDA pregnancies.

Safety evaluation of single-sperm cryopreservation technique applied in intracytoplasmic sperm injection.

Intracytoplasmic sperm injection (ICSI) is a technique that directly injects a single sperm into the cytoplasm of mature oocytes. Here, we explored the safety of single-sperm cryopreservation applied in ICSI. This retrospective study enrolled 186 couples undergoing ICSI-assisted pregnancy. Subjects were allocated to the fresh sperm (group A)/single-sperm cryopreservation (group B) groups based on sperm type, with their clinical baseline/pathological data documented. We used ICSI-compliant sperm for subsequent in vitro fertilization and followed up on all subjects. The recovery rate/cryosurvival rate/sperm motility of both groups, the pregnancy/outcome of women receiving embryo transfer, and the delivery mode/neonatal-related information of women with successful deliveries were recorded. The clinical pregnancy rate, cumulative clinical pregnancy rate, abortion rate, ectopic pregnancy rate, premature delivery rate, live birth delivery rate, neonatal birth defect rate, and average birth weight were analyzed. The two groups showed no significant differences in age, body mass index, ovulation induction regimen, sex hormone [anti-Müllerian hormone (AMH)/follicle-stimulating hormone (FSH)/luteinizing hormone (LH)] levels, or oocyte retrieval cycles. The sperm recovery rate (51.72%-100.00%) and resuscitation rate (62.09% ± 16.67%) in group B were higher; the sperm motility in the two groups demonstrated no significant difference and met the ICSI requirements. Group B exhibited an increased fertilization rate, decreased abortion rate, and increased safety versus group A. Compared with fresh sperm, the application of single-sperm cryopreservation in ICSI sensibly improved the fertilization rate and reduced the abortion rate, showing higher safety.

The Impact of Laparoscopic Myomectomy on Pregnancy Outcomes: A Systematic Review.

The objective of this systematic review is to investigate the impact of laparoscopic myomectomy techniques on pregnancy outcomes, with a specific focus on the correlation between the type of suture used during the procedure and the incidence of uterine rupture. Additionally, the study aims to examine how the localization and size of myomas, key factors in laparoscopic myomectomy, may influence fertility outcomes. extensive searches were conducted using MDPI, PubMed, Web of Science, and Cochrane Library databases from 2008 to November 2023. The study involved women of reproductive age diagnosed with fibroids who underwent surgical removal of fibroids using either laparotomy or laparoscopy. The evaluation of pregnancy outcomes focused on indicators such as live birth rates, miscarriage rates, stillbirth rates, premature delivery rates, and cases of uterine rupture. Quality assessment was systematically performed by employing the National Institutes of Health Study Quality Assessment Tools, with the subsequent formulation of clinical recommendations that were meticulously graded in accordance with the robustness of the underlying evidence. The pregnancy outcomes post-myoma treatment, as reflected in one of the presented tables, show a promising number of pregnancies and live births, but also indicate the potential risks of miscarriages and preterm births. The diversity in outcomes observed among various studies underscores the imperative for tailored patient care, as well as the necessity for additional research aimed at optimizing fertility and pregnancy outcomes following myoma treatment. This study offers insights into the criteria for patient selection and intraoperative methodologies specifically related to laparoscopic myomectomy. To enhance our understanding of the associations between fibroid characteristics (location, size) and reproductive outcomes, additional research is warranted, particularly through well-designed clinical trials.

Application of an Outpatient Multidisciplinary Collaborative Diagnosis and Treatment Model in the Management of Critically Ill Obstetric Patients

Background: To analyze the impact of a multidisciplinary collaborative diagnosis and treatment (MDT) management in obstetric outpatient departments on the outcome of high-risk pregnancies, and to summarize the experience and to improve the diagnosis and treatment ability of for critically ill obstetric patients. Method: Two hundred sixty-six pregnant and lying-in women with multidisciplinary treatment were selected for retrospective analysis. According to the criteria, 176 high-risk pregnant women were included, including 83 cases of outpatient MDT and 93 cases of inpatient MDT. The classification of pregnancy diseases and pregnancy risk was carried out. The source of high-risk pregnant women, the distribution and number of collaborative clinics, the classification of major diseases, the classification of pregnancy risk, the mode of delivery, the condition of labor, and pregnancy outcome were all analyzed to determine the impact of participating in MDT timing on adverse pregnancy outcomes through logistic regression analysis. Result: (1) The top 3 diseases in high risk pregnant women undergoing MDT were pregnancy with cardiac disease 42.6% (75/176), pregnancy with hypertension 14.2% (25/176), and pregnancy with immune system disease 11.9% (21/176). Among pregnant women with cardiac disease, 38 (50.7%) were mainly congenital cardiac disease. (2) The number of high-risk pregnant women with MDT in the hospital was more than that in the outpatient department (p &lt; 0.05), and the number of departments involved in MDT in the hospital was more than that in the outpatient department (p &lt; 0.05). The proportion of pregnant women with pregnancy risk grade of I–III in outpatient MDT cardiac disease was higher than that in inpatient MDT (p &lt; 0.05), while the pregnant women with pregnancy risk grade of IV–V were all inpatient MDT cardiac disease with the majority being in late pregnancy (12/16). (3) The high-risk pregnant women who received MDT in the late pregnancy had a red risk level, which was higher than that then in early and middle pregnancy (p &lt; 0.05). There was a higher rate of premature delivery, multiple organ damage, intensive care unit (ICU) monitoring, cesarean section, and neonatal asphyxia in high-risk pregnant women with later MDT gestational age (p &lt; 0.05). The late timing of participating in MDT was a risk factor for ultimately developing adverse pregnancy outcomes (p &lt; 0.05). Conclusions: Outpatient MDT management can effectively improve the pregnancy outcome of high-risk pregnant women, early outpatient MDT mode management should be actively promoted, and a comprehensive and professional MDT team should be utilized to reduce adverse pregnancy outcomes.

Comparison of Maternal and Neonatal Outcomes Among COVID-19 and Healthy Pregnant Women in the West of Iran: A Retrospective Cohort Study

Background: In the COVID-19 epidemic, pregnant women, fetuses, and newborns are a high-risk population that is more susceptible than the general population. These groups are more susceptible to serious respiratory illnesses and pneumonia because of their weakened immune systems. This study compared maternal and neonatal outcomes in postpartum women with COVID-19 with similar healthy women at the hospital Study Design and Methods: In this retrospective cohort study, the characteristics of 100 pregnant women with COVID-19 (confirmed by a positive PCR test during pregnancy) were compared to 150 healthy pregnant women who were referred to Fatemieh Hospital in Hamadan from March, 2020 to February, 2021. The maternal and neonatal outcomes were collected from the medical record of patients and analyzed using SPSS software (Ver. 26). Results: No significant differences were observed in the average ages (± standard deviation) of the two groups of COVID-19 (30.25 ± 6.24 years) and healthy (29.48 ± 6.73 years) women. In this study, pregnant women were infected with COVID-19 from weeks 7 to 41 of gestation, with a median infection time of 35 weeks. The odds ratio (95% confidence interval) of pre-eclampsia and preterm birth was significantly higher in women with COVID-19 than in healthy women with the following values 2.79 (1.61, 7.34) and 22.26 (2.86, 173.33), respectively. Conclusion: Pregnant women suffering from COVID-19 had considerably greater rates of gestational issues, neonatal difficulties, pre-eclampsia, and premature delivery, according to the findings of this study. During epidemics, it is advised that pregnant women and their newborns receive more basic care.

The NeoRoo mobile app: Initial design and prototyping of an Android-based digital health tool to support Kangaroo Mother Care in low/middle-income countries (LMICs).

Premature birth and neonatal mortality are significant global health challenges, with 15 million premature births annually and an estimated 2.5 million neonatal deaths. Approximately 90% of preterm births occur in low/middle income countries, particularly within the global regions of sub-Saharan Africa and South Asia. Neonatal hypothermia is a common and significant cause of morbidity and mortality among premature and low birth weight infants, particularly in low/middle-income countries where rates of premature delivery are high, and access to health workers, medical commodities, and other resources is limited. Kangaroo Mother Care/Skin-to-Skin care has been shown to significantly reduce the incidence of neonatal hypothermia and improve survival rates among premature infants, but there are significant barriers to its implementation, especially in low/middle-income countries (LMICs). The paper proposes the use of a multidisciplinary approach to develop an integrated mHealth solution to overcome the barriers and challenges to the implementation of Kangaroo Mother Care/Skin-to-skin care (KMC/STS) in LMICs. The innovation is an integrated mHealth platform that features a wearable biomedical device (NeoWarm) and an Android-based mobile application (NeoRoo) with customized user interfaces that are targeted specifically to parents/family stakeholders and healthcare providers, respectively. This publication describes the iterative, human-centered design and participatory development of a high-fidelity prototype of the NeoRoo mobile application. The aim of this study was to design and develop an initial ("A") version of the Android-based NeoRoo mobile app specifically to support the use case of KMC/STS in health facilities in Kenya. Key functions and features are highlighted. The proposed solution leverages the promise of digital health to overcome identified barriers and challenges to the implementation of KMC/STS in LMICs and aims to equip parents and healthcare providers of prematurely born infants with the tools and resources needed to improve the care provided to premature and low birthweight babies. It is hoped that, when implemented and scaled as part of a thoughtful, strategic, cross-disciplinary approach to reduction of global rates of neonatal mortality, NeoRoo will prove to be a useful tool within the toolkit of parents, health workers, and program implementors.

Comparison of clinical outcomes and second-look hysteroscopy of the complete and incomplete septate uterus after hysteroscopic septoplasty.

Septate uterus is the most common congenital uterine malformation. This retrospective cohort study compared clinical outcomes and second-look hysteroscopy findings in patients with complete and incomplete septate uteri after septoplasty. We reviewed the medical records of patients with a septate uterus who underwent hysteroscopic septoplasty and second-look hysteroscopy at the West China Second University Hospital between September 2013 and September 2021. Information regarding pregnancy outcomes was collected through telephone interviews. The independent samples t-test, Mann-Whitney U test, Pearson's chi-square test, and Fisher's exact test were used to explore the differences between the complete and incomplete septate uterus groups. A total of 64 patients were enrolled in this study. There was no significant difference in intrauterine adhesion (IUA) rates (16.7% and 32.1%), pregnancy rates (44.1% and 42.9%), term delivery rates (35.3% and 32.1%), premature delivery rates (2.9% and 0), placenta previa rates (2.9% and 3.6%), placenta implantation/adhesion rates (5.9% and 3.6%), and premature rupture of membranes rates (2.9% and 0) between the complete and the incomplete group after hysteroscopic septoplasty (P > 0.05). Endometrial polyps in the septate uterus were common, with an incidence of 33.3% and 25% in the complete and incomplete groups, respectively (P > 0.05). The pregnancy outcomes of complete and incomplete septate uteri after hysteroscopic septoplasty were similar. There was no statistical difference in IUAs after surgery. Different treatment strategies may not be required for complete or incomplete septate uteri.

Effects of vitamin D supplementation on ovulation and pregnancy in women with polycystic ovary syndrome: a systematic review and meta-analysis.

To evaluate the effect of vitamin D supplementation on pregnancy and ovulation in patients with polycystic ovary syndrome. We searched Pubmed, Medline (via Ovid, 1974 to 2020), EMBASE (via Ovid, 1974 to 2020), Cochrane Central Register of Controlled Trials (via Ovid), Web of Science, CNKI, WangFang and the Vip database from inception until April 2021. Two researchers independently screened articles, collected data and evaluated the quality, with Review manager 5.3 for meta-analysis. Totally 20 randomized controlled studies with 1961 subjects were included. Meta analysis showed that pregnancy rate [RR=1.44 (1.28, 1.62), p<0.00,001], ovulation rate [RR=1.42 (1.14, 1.78), p=0.002] and matured oocytes rate [RR=1.08 (1.03, 1.13), p=0.002] of vitamin D supplementation group were significantly higher than those of control group. Meanwhile, early miscarriage rate [RR=0.44 (0.30, 0.66), p<0.00,001], androgen level [MD=-2.31 (-3.51, -1.11), p=0.0002], luteinizing hormone [MD=-1.47 (-2.57, -0.36), p=0.009], follicle stimulating hormone [MD=-0.15 (-0.24, -0.05), p=0.002], and premature delivery rate [RR=0.38, 95% CI (0.21, 0.70), p=0.002] were declined significantly than the controls. However, only one article suggested that the progesterone [MD=6.52 (4.52, 8.52), p<0.05] in the vitamin D intervention group was increased. There was no notable difference in the biochemical pregnancy rate [RR=0.95 (0.55, 1.63), p=0.84], gestational hypertension rate [RR=0.40, 95% CI (0.15, 1.11), p=0.08], gestational diabetes mellitus rate [RR=0.27, 95% CI (0.05, 1.39), p=0.11], fertilization rate [RR=1.05 (1.00, 1.10), p=0.04], cleavage rate [RR=1.03 (0.99, 1.06), p=0.17], high-quality embryo rate [RR=1.08 (0.98, 1.20), p=0.10], endometrial thickness [MD=0.10], 77 (-0.23, 1.77), p=0.13], estrogen level [MD=-0.34 (-1.55, 0.87), p=0.59], LH/FSH [MD=-0.14, 95% CI (-0.48, 0.20), p=1.00] and anti-Mullerian hormone [MD=-0.22 (-0.65, 0.21), p=0.32]. Vitamin D supplementation contribute to the higher pregnancy and ovulation rates, and lower androgen, LH, FSH and early miscarriage rates in women with PCOS, regardless of the use of ovulation induction drugs or assisted reproductive technologies. However, no significant improvement was observed in fertilization rate or cleavage rate. Due to the limitation in quality of involved studies, more high-quality RCTs are needed for further validation. https://www.crd.york.ac.uk/PROSPERO, identifier CRD42021250284.

Effect of different conization ranges on pregnancy outcomes

Purpose: To analyze the influence of different conization on pregnancy outcomes. Methods: The data of 78 women at childbearing age having cervical conization in our hospital from January 2013 till December 2015, was collected and analyzed. The control group comprised of 80 women of childbearing age with matched clinical data, who did not undergo cervical conization. Data on the conization procedure were analyzed and pregnancy and obstetric outcomes were assessed. using the. Comparisons were made using the 2test or the Fisher exact test and Student T-test as appropriate. Results: Cold knife cervical conization prolonged the time to conception in patients. Following the procedure, the incidence of premature delivery and premature rupture of membranes were significantly increased as also the rate of early abortions. The depth and circumference of conization was found to be directly correlated with the rate of premature delivery and premature membrane rupture, but not with fetal growth restriction and macrosomia. Conclusion: The depth and circumference of resection should be based on the type of cervical lesions as well as the prognosis and the future pregnancy plans of the patients.

Retrospective analysis of associated factors and adverse pregnancy outcomes of postpartum hemorrhage in the caesarean section of different types of placenta previa

Objective: To analyze associated factors and adverse pregnancy outcomes of postpartum hemorrhage in the caesarean section of puerperae with different types of placenta previa. Methods: This retrospective research was a case-control study. Puerperae with cesarean section of placenta previa from January 2019 to December 2020 in Women's Hospital, School of Medicine, Zhejiang University were collected and divided into the<1 000 ml control group or ≥1 000 ml postpartum hemorrhage group according to the amount of blood loss during cesarean section. Differences in continuous variables were analyzed by t-test and categorical variables were analyzed by χ2 test. The risk factors of postpartum hemorrhage were analyzed by logistic multivariate regression. Results: A total of 962 puerperae were enrolled with 773 cases in the control group and 189 cases in the postpartum hemorrhage group. The incidence of gestational weeks, gravidity, parity, induced abortion, placental accreta and preoperative hemoglobin<110 g/L was significantly different between two groups in different types of placenta previa (P<0.001). Logistic multivariate regression model analysis showed that the independent risk factors of postpartum hemorrhage in the caesarean section of low-lying placenta included placental accreta (OR=12.713, 95%CI: 4.296-37.625), preoperative hemoglobin<110 g/L (OR=2.377, 95%CI: 1.062-5.321), and prenatal vaginal bleeding (OR=4.244, 95%CI: 1.865-9.656). The independent risk factors of postpartum hemorrhage in the caesarean section of placenta previa included once induced abortion (OR=2.789, 95%CI:1.189-6.544), induced abortion≥2 (OR=2.843, 95%CI:1.101-7.339), placental accreta (OR=6.079, 95%CI:3.697-9.996), HBsAg positive (OR=3.891, 95%CI:1.385-10.929), and placental attachment to the anterior uterine wall (OR=2.307, 95%CI:1.285-4.142). The rate of postpartum hemorrhage and premature delivery in puerperae with placenta previa was higher than that in puerperae with low-lying placenta (P<0.001). Conclusions: The associated factors of postpartum hemorrhage in puerperae with different types of placenta previa are different. Placenta accreta is the common risk factor of postpartum hemorrhage in puerperae with low-lying placenta and placenta previa.

Associative role of methylenetetrahydrofolate reductase and thymidylate synthase 6bp del gene polymorphism in preterm delivery

Abstract Objective: Preterm delivery is a major adverse birth outcome, approximately 15 million babies are born prematurely every year. There are several causes for preterm deliveries. This study focuses on folate metabolic pathways. Dietary folate plays a crucial role in premature labor. We examined the relationship between methylenetetrahydrofolate reductase (MTHFR) (C677T) and thymidylate synthase (TYMS) 6bpdel polymorphism. Materials and Methods: A total number of 300 pregnant women were selected for this study; among which (n = 150) were preterm and (n = 150) were term delivery cases. The selected samples were further processed for molecular polymerase chain reaction-restriction fragment length polymorphism analysis. The demographic profile of birth status resulted significantly with (P = 0.0001) proving chances of high infant mortality due to prematurity. Results: The genotype distribution of MTHFR C677T showed significant data (P = 0.0021) whereas insignificant genotypic distribution was observed for the TYMS gene (P = 0.067). Our results imply that genes that are involved in the folate pathway play a crucial role in early pregnancy. Conclusion: Advanced and better strategies can be brought to an improved intervention of folate at the time of pregnancy which will help to reduce the rate of premature deliveries.

Analysis Effects of Pender Health Promotion Model Education on Health Behaviors and Maternal and Infant of Cardiac Disease in Pregnancy

ABSTRACT Pregnancy with cardiac disease includes pregnancy in women with a history of heart disease and cardiac disease during pregnancy. Therefore, we aim to investigate the effect of Pender health promotion model (HPM) on the health behaviors and maternal and fetal outcomes in pregnant patients with cardiac disease. 80 pregnant women with cardiac disease were enrolled in the study from January 2016 to December 2017. 40 patients who received HPM health education were selected as treatment group by convenient sampling method. 40 patients were selected to receive routine health education. After 12 weeks of education, the awareness of health knowledge before and after education, health behavior compliance, level of pre-partum cardiac function, and maternal and fetal outcomes were compared between the two groups. After education, the knowledge rate in observation group was higher than that in control group (P < 0.01, P < 0.05); the compliance of health behavior in observation group was higher than that in control group (P < 0.01, P < 0.05); before delivery, the rate of cardiac function(I+II) in observation group was 67.50% and significantly lower than 42.50% in control group (P < 0.05); after education, the incidence rate of severe heart failure, cesarean delivery, premature delivery and full-term infants with low body mass in observation group was significantly lower than that in control group (P < 0.05). The Pender health promotion model can improve the knowledge of health knowledge and compliance of health behaviors of pregnancy with cardiac disease effectively, and it can help reduce heart burden and improve maternal and child outcomes.

Obstetric outcomes after cervical loop electrosurgical excision procedure

ObjectivesThis study aimed to investigate whether a history of loop electrosurgical excision procedure (i.e., conisation) affects obstetric and neonatal outcomes. MethodsA retrospective cohort study was carried out in Västernorrland county, Sweden. 57 nulliparous women with singleton pregnancies and previous conisation were compared with 100 age-matched pregnant controls without history of conisation. ResultsThere was significantly lower gestational age by delivery (p = 0.036), however, the premature delivery rate was not different. Caesarean section was also less frequent (OR: 0.29, 95% CI: 0.081–1.04, p = 0.047) in the conisation group than those in the control group. There were no differences in neonatal outcomes. ConclusionsPrevious conisation does not affect the risk of prematurity or cervical dilatation during the first stage of labour. Women with history of conisation had a lower rate of caesarean section, and lower gestational age by delivery.

Antepartum SARS-CoV-2 infection and adverse birth outcomes in South African women.

SARS-CoV-2 infection in pregnant women has been associated with severe illness in the women and higher rates of premature delivery. There is, however, paucity of data on the impact of the timing of SARS-CoV-2 infection and on symptomatic or asymptomatic infections on birth outcomes. Data from low-middle income settings is also lacking. We conducted a longitudinal study from April 2020 to March 2021, in South Africa, where symptomatic or asymptomatic pregnant women were investigated for SARS-CoV-2 infection during the antepartum period. We aimed to evaluate if there was an association between antepartum SARS-CoV-2 infection on birth outcomes. SARS-CoV-2 infection was investigated by nucleic acid amplification test (NAAT), histological examination was performed in a sub-set of placentas. Overall, 793 women were tested for SARS-CoV-2 antenatally, including 275 (35%) who were symptomatic. SARS-CoV-2 infection was identified in 138 (17%) women, of whom 119 had symptoms (COVID-19 group) and 19 were asymptomatic. The 493 women who were asymptomatic and had a negative SARS-CoV-2 NAAT were used as the referent comparator group for outcomes evaluation. Women with COVID-19 compared with the referent group were 1.66-times (95% confidence interval (CI) = 1.02-2.71) more likely to have a low-birthweight newborn (30% vs 21%) and 3.25-times more likely to deliver a very low-birthweight newborn (5% vs 2%). Similar results for low-birthweight were obtained comparing women with SARS-CoV-2 confirmed infection (30%) with those who had a negative NAAT result (22%) independent of symptoms presentation. The placentas from women with antenatal SARS-CoV-2 infection had higher percentage of chorangiosis (odds ratio (OR) = 3.40, 95% CI = 1.18-.84), while maternal vascular malperfusion was more frequently identified in women who tested negative for SARS-CoV-2 (aOR = 0.28, 95% CI = 0.09-0.89). Our study demonstrates that in a setting with high HIV infection prevalence and other comorbidities antenatal SARS-CoV-2 infection was associated with low-birthweight delivery.

The impact of oocytes containing smooth endoplasmic reticulum aggregates on assisted reproductive outcomes: a cohort study

BackgroundThe impact of smooth endoplasmic reticulum aggregates (SERa) on assisted reproductive technology (ART) outcomes was still controversial. Our objective is to investigate the impact of the presence of SERa on intracytoplasmic sperm injection (ICSI) outcomes.MethodsThis was a retrospective cohort study. A total of 1,090 fresh ICSI cycles from 944 patients between January 2016 and June 2020 were included. Outcomes from clinical, embryological and neonatal aspects were compared between SERa + and SERa- cycles as well as between SERa + and SERa- oocytes.ResultsThe total gonadotropin (Gn) dose, number of oocytes retrieved, serum estradiol concentration and number of the available embryo were significantly higher in SERa + cycles than in SERa- cycles (P < 0.05). Comparable two pronuclei (2PN) fertilization rate and poly-pronucleus zygote rate were shown in SERa + and SERa- cycles (P > 0.05), but which were higher in SERa + oocytes than in SERa- oocytes (P < 0.05). No statistical difference in blastocyst formation rate was found in SERa + and SERa- cycles as well as in SERa + and SERa- oocytes (P > 0.05). Good-quality embryo rate was statistically higher in SERa- cycles than in SERa + cycles (P < 0.05), but the difference was comparable between SERa + and SERa- oocytes (P > 0.05). No statistical difference in clinical pregnancy rate, spontaneous abortion rate, live birth rate and premature delivery rate were found in SERa + and SERa- cycles as well as in SERa + and SERa- oocytes (P > 0.05). The implantation rate was comparable in SERa + and SERa- cycles (P > 0.05), but it is higher in the group of only SERa- embryo transfer when compared with the group of mixed SERa + and SERa- embryo transfer (P < 0.05). 159 newborns in SERa + cycles and 140 newborns in SERa- cycles were followed up. Comparable newborn malformation rate was observed between SERa + and SERa- cycles and oocytes (P > 0.05). Logistic regression analysis revealed number of oocytes and total dose of Gn were risk factors for SERa occurrence (aOR = 1.05 and 1.55, P < 0.001).ConclusionOocyte's SERa is correlated with a number of oocytes retrieved and higher Gn dose, but it does not affect pregnancy outcomes and increase newborn malformation rate.