Higher Rates Of Preterm Birth Research Articles

Proteinuria is associated with worse outcomes in babies born to mothers with preeclampsia: A retrospective cohort study at a tertiary referral hospital in Brazil.

To evaluate whether the presence of proteinuria, although no longer mandatory in the revised diagnostic criteria, results in worse maternal and fetal outcomes in preeclampsia (PE). A retrospective cohort study was conducted, analyzing data from pregnant patients diagnosed with PE between January 2015 and December 2019 at a tertiary care center in Brazil. Ethical approval was obtained, and the patient records were reviewed to assess maternal and perinatal outcomes based on the revised diagnostic criteria by the College of Obstetricians and Gynecologists, focusing on the presence or absence of proteinuria. The study included 816 pregnant patients with PE, of whom 685 (83.9%) were diagnosed based on proteinuria. The revised criteria, which include indicators of organ damage, identified an additional 131 cases (16.4%). Analysis showed no significant differences in maternal outcomes between proteinuria and non-proteinuria groups, including intensive care unit (ICU) admission, acute pulmonary edema (APE), HELLP syndrome, eclampsia, or C-section rates. However, babies born to mothers with proteinuria PE experienced worse outcomes, including fetal growth restriction, low birth weight, ICU admission, and higher rates of preterm birth. Relative risk analysis demonstrated a high risk of babies being born with low birth weight, ICU admission, and being born preterm and very preterm in cases where proteinuria was present in mothers with PE. The presence of proteinuria is associated with significantly worse outcomes in babies born to mothers with preeclampsia, while no significant differences were observed in maternal outcomes.

Reproductive outcomes after fertility-sparing surgery for cervical cancer - results of the multicenter FERTISS study

IntroductionFertility-sparing treatment (FST) for patients with cervical cancer intends to achieve oncologic outcomes comparable to those after radical treatment while maximizing reproductive outcomes, including the ability to conceive and minimizing the risk of prematurity. MethodologyInternational multicentre retrospective FERTISS study focused on patients treated with FST analysed timing of FST relative to pregnancy, conception attempts and methods, abortion rates, prophylactic procedures reducing the risk of severe prematurity, pregnancy duration, and delivery mode. ResultsOf the 733 patients treated at 44 centres in 13 countries, 49.7% attempted to conceive during median follow-up of 72 months and 22.6% (166/733) patients achieved a successful pregnancy. Success rate was significantly higher after non-radical surgery (63.2%; 122/193) compared to radical trachelectomy (25.7%; 44/171, p < 0.001). Available perinatological data shows that 89.5% (111/124) of the patients became pregnant naturally. There was no significant difference in the abortion rate in the first pregnancy nor delivery success rates between non-radical and radical procedures patients. Preterm delivery (<38 weeks gestation) occurred more frequently after radical than non-radical procedures (76.5% vs. 57.7%, p = 0.15). Almost all patients (97.3%; 73/75) who underwent regular ultrasound cervicometry in pregnancy with subsequent prophylactic procedures delivered a live fetus, compared to 30.6% (15/49) women without such management, p < 0.001. ConclusionPatients who underwent non-radical surgery had significantly higher pregnancy rates. Most pregnancies resulted in a viable fetus, but radical trachelectomy led to a higher rate of preterm births in the severe prematurity range. Half of the patients did not attempt pregnancy after FST.

Fetomaternal Outcome in Pregnancy with Gestational Thrombocytopenia

Introduction: Gestational thrombocytopenia, a common hematological disorder in pregnancy, poses risks to both maternal and neonatal health. This study aims to evaluate the fetomaternal outcomes in pregnancies complicated by gestational thrombocytopenia compared to those with normal platelet counts. Methods: This prospective cohort study was conducted over 12 months at Jalalabad Ragib-Rabeya Medical college hospital sylhet Bangladesh. It included 100 pregnant women diagnosed with gestational thrombocytopenia (platelet count &lt;150,000/µL after 20 weeks of gestation) and 100 matched controls with normal platelet counts. Maternal data included demographic information, obstetric and medical history, mode of delivery, incidence of pre-eclampsia, postpartum hemorrhage, and need for platelet transfusions. Fetal outcomes assessed were birth weight, Apgar scores, preterm birth rates, NICU admissions, and neonatal thrombocytopenia. Data were analyzed using t-tests for continuous variables and chi-square tests for categorical variables, with multivariate logistic regression to identify predictors of adverse outcomes. Result: The gestational thrombocytopenia group showed higher, though not statistically significant, rates of cesarean delivery (30% vs. 25%, p=0.453), pre-eclampsia (15% vs. 12%, p=0.540), and postpartum hemorrhage (18% vs. 10%, p=0.110). Platelet transfusions were required more frequently in the gestational thrombocytopenia group (8% vs. 2%, p=0.052). Fetal outcomes revealed lower mean birth weight (2950g vs. 3050g, p=0.145), higher preterm birth rates (14% vs. 10%, p=0.371), and more NICU admissions (20% vs. 12%, p=0.132) in the gestational thrombocytopenia group. Notably, neonatal thrombocytopenia was significantly more prevalent in the gestational thrombocytopenia group (10% vs. 2%, p=0.017). Conclusion: Gestational thrombocytopenia is associated with increased risks of certain maternal and neonatal complications. Vigilant monitoring and management are essential to improve outcomes in affected pregnancies. Further research is needed to develop targeted interventions and improve antenatal care practices.

Hepatitis C Virus Infection in Pregnant Individuals with Opioid Use Disorder and Its Association with Preterm Birth.

Both hepatitis C virus (HCV) and opioid use disorder (OUD) have been associated with higher rates of preterm birth (PTB). It is unknown whether the higher prevalence of HCV in individuals with OUD may contribute to this association. The objective of this study is to evaluate the association between HCV and PTB in pregnant individuals with OUD. We conducted a retrospective cohort of pregnant individuals with OUD who participated in more than three visits in a co-located multidisciplinary program. Inclusion criteria were a diagnosis of OUD, participation in treatment/prenatal care program, and laboratory evaluation of HCV status. The primary exposure was the presence of HCV antibodies, and secondarily, a detectable viral load (viremia). The primary outcome was PTB, which was further classified as spontaneous or iatrogenic. Multivariable logistic regression was used to detect associations while adjusting for race, history of prior PTB, and tobacco use. A total of 941 individuals were included in the study, 404 with HCV and 537 without. Rates of PTB did not differ between those with compared to those without HCV (20.3 vs. 23.8%, adjusted odds ratio [aOR] = 0.75 [95% confidence interval (CI): 0.53-1.07]). There were similar rates of spontaneous PTB (13.1 vs. 16.2%, aOR = 0.79 [95% CI: 0.43-1.45]) and iatrogenic PTB (7.2 vs. 7.6%, aOR = 1.26 [95% CI: 0.69-2.30]). Comparing those with viremia to those without, there were also similar rates of overall PTB (21.6 vs. 17.9%, aOR = 0.86 [95% CI: 0.52-1.44]), spontaneous PTB (13.3 vs. 12.9%, aOR = 0.97 [95% CI: 0.52-1.87]), and iatrogenic PTB (8.3 vs. 5.0%, aOR = 1.83 [95% CI: 0.76-4.94]). HCV does not appear to be associated with spontaneous or iatrogenic PTB in pregnant persons with OUD who are engaged in treatment and prenatal care. The role of co-located multidisciplinary prenatal and addiction programs in the association between HCV and PTB warrants further investigation. · Hepatitis C antibodies are not associated with PTB in those with OUD.. · Hepatitis C viremia is not associated with PTB.. · Multidisciplinary treatment programs may contribute to these findings..

Health Impacts of Pre-eclampsia: A Comprehensive Analysis of Maternal and Neonatal Outcomes.

Background and Objectives: Hypertensive disorders, particularly pre-eclampsia, pose significant risks during pregnancy, affecting both maternal and neonatal health. The study aims to analyze short- and long-term health implications for mothers and their children, comparing those with pre-eclampsia to those without, to improve understanding of risk factors, diagnostic markers, and outcomes. Materials and Methods: This retrospective observational study involved 235 patients, 98 with pre-eclampsia and 137 without, monitored from 2015 to 2018 at the Obstetrics and Gynecology Department of the "Pius Brînzeu" Emergency County Clinical Hospital in Timișoara, Romania. Results: Women with pre-eclampsia were older, had higher BMIs, and more frequently had a family history of pre-eclampsia, hypertension, and diabetes. They also had lower educational and socioeconomic levels and fewer prenatal visits. Biochemical markers such as higher proteinuria, elevated sFlt-1, and lower PlGF were significant in diagnosing pre-eclampsia. Short-term maternal complications like eclampsia, HELLP syndrome, and acute kidney injury were more prevalent in the pre-eclampsia group. Neonatal outcomes included higher rates of preterm birth, low birth weight, and NICU admissions. Long-term mothers with a history of pre-eclampsia had higher incidences of chronic hypertension, cardiovascular disease, kidney problems, diabetes, and mental health disorders. Their children faced increased risks of neuropsychological delays, chronic respiratory issues, behavioral disorders, learning difficulties, and frequent infections. Conclusions: The study highlights the significant short- and long-term health impacts of pre-eclampsia on both mothers and their children. Early monitoring, intervention, and comprehensive management are crucial in mitigating these risks. These findings underscore the need for personalized care strategies to improve health outcomes for affected individuals.

Effect of single blastocyst-stage versus single cleavage-stage embryo transfer on cumulative live births in women with good prognosis undergoing in vitro fertilization: Multicenter Randomized Controlled Trial

In this multicenter, non-inferiority, randomized trial, we randomly assigned 992 women undergoing in-vitro fertilization (IVF) with a good prognosis (aged 20-40, ≥3 transferrable cleavage-stage embryos) to strategies of blastocyst-stage (n = 497) or cleavage-stage (n = 495) single embryo transfer. Primary outcome was cumulative live-birth rate after up to three transfers. Secondary outcomes were cumulative live-births after all embryo transfers within 1 year of randomization, pregnancy outcomes, obstetric-perinatal complications, and livebirths outcomes. Live-birth rates were 74.8% in blastocyst-stage group versus 66.3% in cleavage-stage group (relative risk 1.13, 95%CI:1.04-1.22; Pnon-inferiority < 0.001, Psuperiority = 0.003) (1-year cumulative live birth rates of 75.7% versus 68.9%). Blastocyst transfer increased the risk of spontaneous preterm birth (4.6% vs 2.0%; P = 0.02) and neonatal hospitalization >3 days. Among good prognosis women, a strategy of single blastocyst transfer increases cumulative live-birth rates over single cleavage-stage transfer. Blastocyst transfer resulted in higher preterm birth rates. This information should be used to counsel patients on their choice between cleavage-stage and blastocyst-stage transfer (NCT03152643, https://clinicaltrials.gov/study/NCT03152643).

Utility of placental biomarkers and fetoplacental Dopplers in predicting likely placental pathology in early and late fetal growth restriction – A prospective study

IntroductionThe aim of this study was to evaluate the association between placental abnormalities, placental biomarkers, and fetoplacental Dopplers in a cohort of pregnancies complicated by fetal growth restriction (FGR). We also ascertained the risk of perinatal mortality, severe neurological morbidity, and severe non-neurological morbidity by type of placental abnormality. MethodsThis was a prospective cohort study. Multivariable logistic regression was used to evaluate the effect of early vs. late FGR, placental biomarkers and fetoplacental Dopplers on Maternal Vascular Malperfusion (MVM) which was the commonest placental abnormality identified. ResultsThere were 161 (53.5 %) early FGR and 140 (46.5 %) late FGR cases. MVM abnormalities were present in 154 (51.2 %), VUE in 45 (14.6 %), FVM in 16 (5.3 %), DVM in 14 (4.7 %) and CHI in 4 (1.3 %) cases. The odds of MVM were higher in early compared to late FGR cohort (OR 1.89, 95%CI 1.14, 3.14, p = 0.01). Low maternal PlGF levels <100 ng/L (OR 2.34, 95%CI 1.27,4.31, p = 0.01), high sFlt-1 level (OR 2.13, 95%CI 1.35, 3.36, p = 0.001) or elevated sFlt-1/PlGF ratio (OR 3.48, 95%CI 1.36, 8.91, p = 0.01) were all associated with MVM. Increased UA PI > 95th centile (OR 2.91, 95%CI 1.71, 4.95, p=<0.001) and mean UtA PI z-score (OR 1.74, 95%CI 1.15, 2.64, p = 0.01) were associated with higher odds of MVM. Rates of severe non-neurological morbidity were highest in the MVM, FVM, and CHI cohorts (44.8 %, 50 %, and 50 % respectively). ConclusionMVM was the commonest placental abnormality in FGR, particularly in early-onset disease. Low maternal PlGF levels, high sFlt-1 levels, elevated sFlt-1/PlGF ratio, and abnormal fetoplacental Dopplers were also significantly associated with MVM. MVM, FVM, and CHI abnormalities were associated with lower median birthweight, higher rates of preterm birth, operative birth for non-reassuring fetal status, and severe neonatal non-neurological morbidity.

Perinatal Outcomes of Singleton, Twin and Triplet Gestations after Oocyte Donation: A Retrospective, Population-Based Cohort Analysis.

Although high live birth rates are associated with oocyte donation (OD), these pregnancies are associated with increased obstetric and perinatal risks. This study evaluated maternal and neonatal risks after OD compared to in vitro fertilization (IVF) with autologous oocytes, and to spontaneous pregnancies (SPs), among singletons, twins and triplets. A retrospective, large, population-based cohort study was conducted based on electronic data from Maccabi Healthcare Services. A total of 469,134 pregnancies were grouped according to the mode of conception. The main outcome measures were preterm birth (PTB), small for gestational age (SGA) and pregnancy-induced hypertension (PIH). The data were analyzed separately for singletons, twins and triplets. The mean maternal age was older in the OD group compared with the IVF and SP groups (singletons: 39.7 ± 4.1 vs. 34.5 ± 4.8 and 31.7 ± 5.3 years; twins: 39 ± 4.6 vs. 32.6 ± 4.4 and 31.2 ± 5.1 years; and triplets: 35.6 ± 2.5 vs. 32 ± 3.9 and 29.7 ± 5 years). The mean gestational age was younger among the OD group compared to the SP group (singletons: 37.5 ± 3 vs. 39 ± 2 p = 0.001, and twins: 35 ± 3 vs. 36 ± 2.5 p = 0.001). Higher rates of PTB < 37, PTB < 34 and PTB < 28 weeks were found among OD singletons. Multivariable logistic regressions for PTB < 37 weeks and SGA in singletons demonstrated that OD and IVF are significant risk factors (OR = 4.1, 95%CI = 3.3-5.2; OR = 4.3, 95%CI = 4.1-4.6; OR = 1.9, 95%CI = 1.3-2.6; OR = 2.2, 95%CI = 2-2.4, respectively). Significantly higher rates of PIH were demonstrated among the OD vs. IVF and SP groups in singleton (4.3% vs. 1.7% and 0.7%) and in twin pregnancies (7.5% vs. 4.3% and 3.4%). OD pregnancies are at increased risk for PTB, SGA and PIH.

P-126 The impact of ICSI versus IVF on the reproductive outcomes of couples with non-male factor infertility and frozen-thawed embryo transfer cycles

Abstract Study question Does Intracytoplasmic Sperm Injection (ICSI) improve reproductive outcomes in patients with non-male factor infertility undergoing Frozen-Thawed Embryo Transfer (FET) treatment? Summary answer ICSI showed slightly improved clinical outcomes compared to IVF, but was associated with higher preterm birth rates and low birthweight when twins were born. What is known already The use of ICSI has seen a significant surge globally, particularly in Europe and the USA, as a solution for fertilization failure resulting from male factor infertility. FET presents a viable option for those considering additional children. Numerous studies have investigated the effectiveness of ICSI in couples with non-male factor infertility undergoing fresh embryo transfer in ovarian stimulation cycles. However, there is a dearth of evidence demonstrating whether ICSI, compared to conventional IVF (cIVF), could influence reproductive outcomes in couples with non-male factor infertility undergoing FET treatment. Study design, size, duration This retrospective cohort study included 10,143 cycles from 6,206 couples who underwent FET at the Third Affiliated Hospital of Zhengzhou University between January 2016 and September 2022. Participants/materials, setting, methods Patients were categorized into two groups based on the insemination methods used for the transferred embryos. Patients were excluded if : 1) Embryos were biopsied and tested; 2) Oocytes had been vitrified; 3) Embryos were derived from donor oocytes, AOA treatment, or rescue ICSI; 4) Embryos that were not transferred; and 5) They had undergone fresh embryo transfer. PSM at a ratio of 1:1 was utilized to ensure comparability of reproductive outcomes. Main results and the role of chance Post-PSM, the general characteristics were comparable across both groups. The clinical pregnancy rates (37.6% vs 40.0%, P = 0.311), miscarriage rates (21.4% vs 23.1%, P = 0.597), and live birth rates (28.2% vs 30.4%, P = 0.329) exhibited no significant disparity post-PSM between the two groups. Notably, a marginally elevated live birth rate was observed in the ICSI group when blastocysts were transferred to the women (39.8% vs 48.3%, P = 0.050). However, the GEE models indicated that ICSI did not enhance the likelihood of clinical pregnancy, miscarriage, and live birth relative to IVF in women with non-male factor infertility. Following adjustments for variables, ICSI yielded consistent OR values [1.14(0.92-1.42), P = 0.241; 1.08(0.72-1.61), P = 0.703; and 1.16(0.92-1.46), P = 0.220, respectively]. The perinatal outcomes were similar between the two grousps. However, a significantly higher incidence of preterm birth was observed in the ICSI group compared to the cIVF group (20.0% vs 12.5%, P = 0.026). While pregnancy complications were comparable between the two groups, neonates born as twins in the ICSI group exhibited significantly reduced live birth-weight [2520.8(572.9) vs 2691.9(423.7), P = 0.043] and birth length [47.5(2.8) vs 48.5(2.3), P = 0.031]. Correspondingly, the rate of low birthweight was significantly higher in the ICSI group (38.9% vs 21.0%, P = 0.025). Limitations, reasons for caution The retrospective design may lead to selection bias among the included patients. The use of ICSI in ART has been strictly regulated in our country, limiting the sample size and potentially reducing the statistical power. Wider implications of the findings The value of ICSI should be thoroughly discussed with patients with non-male factor infertility before ovarian stimulation. Further research is needed to better understand the impact of ICSI on reproductive and neonatal outcomes in this population. Trial registration number 2021YFC2700602

Racial and Ethnic Disparities in Cervical Insufficiency, Cervical Cerclage, and Preterm Birth.

Background: The frequency of cervical insufficiency differs among the major racial and ethnic groups, with limited data specific to Asian American and Native Hawaiian/Pacific Islander (AANHPI) subpopulations. We assessed cervical insufficiency diagnoses and related outcomes across 10 racial and ethnic groups, including disaggregated AANHPI subgroups, in a large population-based cohort. Study Design: We performed a retrospective cohort study of all singleton births between 20-42 weeks' gestation in California from 2007 to 2018. Logistic regression models were performed to estimate the odds of cervical insufficiency and, among people with cervical insufficiency, the odds of cerclage and preterm birth according to self-reported race and ethnicity. Results: Among 5,114,470 births, 38,605 (0.8%) had a diagnosis code for cervical insufficiency. Compared with non-Hispanic White people, non-Hispanic Black people had the highest odds of cervical insufficiency (adjusted odds ratio [aOR] 3.07; 95% confidence interval [CI], 2.97, 3.18), for cerclage placement and higher odds for preterm birth. Disaggregating AANHPI subgroups showed that Indian people had the highest odds (aOR 1.94; 95% CI, 1.82, 2.07) of cervical insufficiency and had significantly higher odds of cerclage without increased odds of preterm birth; Southeast Asian people had the highest odds of preterm birth. Conclusion: Within a large, diverse population-based cohort, non-Hispanic Black people experienced the highest rates of cervical insufficiency, and among those with cervical insufficiency, had among the highest rates of cerclage and preterm birth. Among AANHPI subgroups specifically, Indian people had the highest rates of cervical insufficiency and cerclage placement, without increased rates of preterm birth; Southeast Asian people had the highest rates of preterm birth, without increased rates of cerclage. Disaggregating AANHPI subgroups identifies important differences in obstetric risk factors and outcomes.

Fetoscopic Tracheal Occlusion for Isolated Severe Left Diaphragmatic Hernia: A Systematic Review and Meta-Analysis.

Background: We aimed to conduct a systematic review and meta-analysis to evaluate the fetoscopic tracheal occlusion in patients with isolated severe and left-sided diaphragmatic hernia. Methods: Cochrane Library, Embase, and PubMed (Medline) databases were searched from inception to February 2024 with no filters or language restrictions. We included studies evaluating the outcomes of fetoscopic intervention compared to expectant management among patients with severe congenital diaphragmatic hernia exclusively on the left side. A random-effects pairwise meta-analysis was performed using RStudio version 4.3.1. Results: In this study, we included 540 patients from three randomized trials and five cohorts. We found an increased likelihood of neonatal survival associated with fetoscopic tracheal occlusion (Odds Ratio, 5.07; 95% Confidence Intervals, 1.91 to 13.44; p < 0.01) across general and subgroup analyses. Nevertheless, there were higher rates of preterm birth (OR, 5.62; 95% CI, 3.47-9.11; p < 0.01) and preterm premature rupture of membranes (OR, 7.13; 95% CI, 3.76-13.54; p < 0.01) in fetal endoscopic tracheal occlusion group compared to the expectant management. Conclusions: Our systematic review and meta-analysis demonstrated the benefit of fetoscopic tracheal occlusion in improving neonatal and six-month postnatal survival in fetuses with severe left-sided CDH. Further studies are still necessary to evaluate the efficacy of tracheal occlusion for isolated right-sided CDH, as well as the optimal timing to perform the intervention.

Placental pathology and fetal growth outcomes in pregnancies complicated by maternal obesity.

The rising prevalence of maternal obesity presents a significant health concern because of the possible implications for obstetric complications and neonatal outcomes. Understanding the impact of obesity on placental structure and function as well as fetal growth and infant outcomes is important to improve the care of these potentially high-risk pregnancies. This study aimed to determine the effect of elevated maternal BMI on histopathologic patterns of placental injury and its consequences on fetal growth. Data were collected from an ongoing cohort of maternal-infant dyads in the UCSD Obstetric Registry spanning 2011-2020. Maternal characteristics, including BMI, hypertensive disease and diabetes, placental gross and histopathology, and infant characteristics, including sex and birthweight, were recorded and analyzed. ANOVA and chi-square tests were used in initial analyses, followed by log-binomial and linear regression models adjusted for relevant confounders to determine associations between maternal BMI, specific patterns of placental injury, and infant birthweight percentiles. Among 1366 maternal-infant dyads, placentas from mothers with overweight and obesity were heavier and demonstrated higher adjusted relative risks of chronic villitis (CV), decidual vasculopathy, intervillous thrombosis, and normoblastemia. Placental efficiency, determined by fetal-placental weight ratio, was decreased with increasing BMI. Maternal obesity was associated with higher rates of preterm birth and higher birthweight percentiles. Multiple placental lesions, including maternal (MVM) and fetal vascular malperfusion (FVM), exhibited significant effects on birthweight percentiles; however, only MVM showed a differential effect based on maternal obesity. Presence of obesity in pregnancy is associated with increased rates of placental patterns of injury, decreased placental efficiency, and increased birthweight percentiles. While placental lesions, such as CV, have the potential to negatively impact fetal growth, the resulting birthweight percentiles demonstrate a more complex relationship between maternal obesity and fetal growth, that likely involves placental and fetal adaptation to the altered in utero environment.

Maternal and fetal outcomes in multiparous women with Cystic Fibrosis

BackgroundQuality of life and survival in Cystic Fibrosis (CF) have improved dramatically, making family planning a feasible option. Maternal and perinatal outcomes in women with CF (wwCF) are similar to those seen in the general population. However, the effect of undergoing multiple pregnancies is unknown. MethodsA multinational-multicenter retrospective cohort study. Data was obtained from 18 centers worldwide, anonymously, on wwCF 18–45 years old, including disease severity and outcome, as well as obstetric and newborn complications. Data were analyzed, within each individual patient to compare the outcomes of an initial pregnancy (1st or 2nd) with a multigravid pregnancy (≥3) as well as secondary analysis of grouped data to identify risk factors for disease progression or adverse neonatal outcomes. Three time periods were assessed – before, during, and after pregnancy. ResultsThe study population included 141 wwCF of whom 41 (29%) had ≥3 pregnancies, "multiparous". Data were collected on 246 pregnancies, between 1973 and 2020, 69 (28%) were multiparous. A greater decline in ppFEV1 was seen in multiparous women, primarily in pancreatic insufficient (PI) wwCF and those with two severe (class I-III) mutations. Multigravid pregnancies were shorter, especially in wwCF over 30 years old, who had high rates of prematurity and newborn complications. There was no effect on pulmonary exacerbations or disease-related complications. ConclusionsMultiple pregnancies in wwCF are associated with accelerated respiratory deterioration and higher rates of preterm births. Therefore, strict follow-up by a multidisciplinary CF and obstetric team is needed in women who desire to carry multiple pregnancies.

Obstetric Outcomes After Chemotherapy in Pregnancy [ID 2683556

INTRODUCTION: Cancer affects approximately 1 in 1,000 pregnancies; limited data exist to guide clinical decision making and counseling regarding chemotherapy. We investigated the obstetric outcomes of patients who received chemotherapy for cancer in pregnancy at a large county hospital. METHODS: In this retrospective IRB-approved study, patients diagnosed with cancer prior to or during pregnancy from May 2009 to May 2023 were identified. Those who received chemotherapy in pregnancy were included. Type of cancer, chemotherapeutic agents, and obstetric outcomes were obtained from the electronic medical record. RESULTS: Of 22 patients who initiated or continued chemotherapy, seven had a cancer diagnosis prior to pregnancy. Fifteen were diagnosed in pregnancy, at an average gestational age of 15.5 weeks. Average maternal age was 30.5 years. Hematologic (36%) and breast (32%) cancers were most common. Four terminated pregnancy and 18 continued pregnancy. Chemotherapy initiation occurred at an average of 21.2 weeks. Most patients received alkylating agents or antitumor antibiotics, and only one required antepartum admission for chemotherapy-related complications. Patients delivered at an average of 35.6±3.0 (29–41) weeks and 9/18 (50%) patients delivered prior to 37 weeks. Severe fetal growth restriction (less than third percentile) occurred in 6/18 (33%) patients; one had a history of fetal growth restriction in a prior pregnancy. There were no neonatal deaths or congenital malformations. CONCLUSION: While high rates of fetal growth restriction and preterm birth were observed, chemotherapy was well tolerated in pregnancy and all non-terminated pregnancies delivered viable infants in the third trimester. Chemotherapy can be administered in pregnancy with counseling regarding neonatal risks.

Echogenic intracardiac foci detection and location in the second-trimester ultrasound and association with fetal outcomes: A systematic literature review.

Echogenic Intracardiac Foci (EIF) are non-structural markers identified during the routine 18-20-week foetal anomaly ultrasound scan yet their clinical significance on future outcomes for the infant is unclear. To examine the association between EIF and risk of preterm birth, chromosomal abnormalities, and cardiac abnormalities. A review across four databases to identify English language journal articles of EIF using a cohort study design. All studies were reviewed for quality using the Critical Appraisal Skills Programme (CASP) checklist and data extracted for comparison and analysis. 19 papers from 9 different countries were included. Combining these studies showed 4.6% (95% CI = 4.55-4.65%) of all pregnancies had EIF which was on the left in 86% of cases, on the right in 3% of cases and bilaterally in 10%. There was no evidence that EIF was associated with higher rates of preterm birth. However, it is possible that infants with EIF were more likely to be terminated rather than be born preterm as there was a 2.1% (range 0.3-4.2%) rate of termination or death of the foetus after week 20 among those with EIF. There was no evidence that EIF alone is highly predictive of chromosomal abnormalities. There was evidence that EIF is associated with higher rates of minor cardiac abnormalities (e.g. ventricular septal defect, tricuspid regurgitation or mitral regurgitation)) with 5.1% (224 of 4385) of those with EIF showing cardiac abnormalities (3.08% in retrospective studies and 17.85% in prospective studies). However, the risk of cardiac defects was only higher with right-sided EIF and where the EIF persisted into the third trimester. However, this is a rare event and would be seen in an estimated 4 per 10,000 pregnancies. EIF alone was not associated with adverse outcomes for the infant. Only persistent EIF on the right side showed evidence of carrying a higher risk of cardiac abnormality and would warrant further follow-up.

Retrospective Cohort Study on the Impact of the COVID-19 Pandemic on Pregnancy Outcomes for Women Living With HIV in British Columbia.

For pregnant women living with HIV (WLWH), engagement in care is crucial to maternal health and reducing the risk of perinatal transmission. To date, there have been no studies in Canada examining the impact of the COVID-19 pandemic on pregnant WLWH. This was a retrospective cohort study assessing the impact of the pandemic on perinatal outcomes for pregnant WLWH using data from the Perinatal HIV Surveillance Program in British Columbia, Canada. We compared maternal characteristics, pregnancy outcomes, and clinical indicators related to engagement with care between a prepandemic (January 2017-March 2020) and pandemic cohort (March 2020-December 2022). We investigated preterm birth rates with explanatory variables using logistic regression analysis. The prepandemic cohort (n = 87) had a significantly (P < 0.05) lower gestational age at the first antenatal encounter (9.0 vs 11.8) and lower rates of preterm births compared with the pandemic cohort (n = 56; 15% vs 37%). Adjusted odds of preterm birth increased with the presence of substance use in pregnancy (aOR = 10.45, 95% confidence interval: 2.19 to 49.94) in WLWH. There were 2 cases of perinatal transmission of HIV in the pandemic cohort, whereas the prepandemic cohort had none. The pandemic had pronounced effects on pregnant WLWH and their infants in British Columbia including higher rates of preterm birth and higher gestational age at the first antenatal encounter. The nonstatistically significant increase in perinatal transmission rates is of high clinical importance.

Advanced maternal age as a risk factor for adverse maternal and perinatal outcomes

A progressive increase in the age of women at first pregnancy is observed, a situation that has been associated with a greater risk of adverse maternal and perinatal effects. The aim of this study was to describe the characteristics and the maternal and perinatal outcomes of nulliparas of 40 years and older and compare them with those of nulliparas under 40. This was a retrospective cohort analysis of a database of pregnancy population who had attended their deliveries in a private university hospital. An association was observed between maternal age ≥ 40 with the maternal compound adverse outcome (OR 1,3; 95% CI: 1,1-1,6), gestational diabetes (OR 3,6; 95% CI: 1,80-3,7), hypertensive disorders/preeclampsia (OR 2,2; 95% CI: 1,6-3,1) and postpartum hemorrhage (4,7; 95% CI: 1,2-16,3), with advanced maternal age persisting as an independent risk factor for the maternal compound adverse outcome (OR 1,3; 95% CI: 1,1 -1,6) and the perinatal compound adverse outcome (OR 1,40; 95% CI: 1,2-1,7) in the multivariate analysis. A higher rate of preterm birth was observed in the group of older nulliparas (OR 1,6; 95% CI: 1,3-2,0) with a higher requirement for admission to NICU for their newborns (OR 1,3; 95% CI: 1,0-1,8). Women with advanced maternal age constitute a high-risk population, whose attention and follow-up would require a differential approach aiming to improve maternal and perinatal outcomes.

Health benefits to the pediatric population from reduction of ambient particulate matter in Krakow, Poland

There have been few assessments of the health benefits to children of policies aimed at curbing fossil fuel-related air pollution. This has resulted in a lack of awareness regarding their positive impact on the health of this vulnerable population. We estimated the pediatric health benefits of policies targeting coal burning in one of Europe’s most polluted cities, Kraków, Poland. We combined available data on child health outcomes, related concentration-response functions, childhood population counts, and concentrations of PM2.5 and PM10 based on city-wide air monitoring in Kraków. Two exposure reduction scenarios were examined. First, we used the observed decrease in air pollutant concentrations between 2010 and 2019. Second, we hypothesized a reduction to the annual World Health Organization (WHO) air quality guideline values issued in 2005. Between 2010 and 2019, the mean annual air pollution levels in Kraków decreased for both PM2.5 and PM10. Annual average PM2.5 concentrations declined by 39.1%, reaching 23.3 μg m−3; PM10 dropped by 39.2% to 34.6 μg m−3. These reductions in air pollution can be linked to numerous actions undertaken at local and national levels. We estimate that the forgone benefits in 2010 from not having achieved the PM levels observed in 2019 (on an annual basis) included: 505 (35.7%) fewer incident cases of asthma in the 1–14 age group, 81 fewer preterm births (16.8% decrease), 52 fewer cases of low birth weight (12.3% decrease), and 59 avoided asthma hospitalizations in 0–18 year olds. Compliance with the 2005 WHO PM2.5 guidelines in 2010 would have avoided 780 incident asthma cases in the 1–14 age group (54.5% decrease), 138 preterm births (28.3% decrease), and 90 cases of low birth weight (21.2% reduction) and 219 (54.2%) fewer asthma hospitalizations in 0–18 year olds. Large health benefits were also estimated for PM10 in both scenarios. This study estimated substantial health benefits for children in Kraków, which were largely attributable to clean air policies that restrict the use of coal and other solid fuels. Kraków provides a model for other cities in Europe and beyond that are affected by coal pollution and have high rates of preterm birth, low birth weight, and respiratory illness.

Effect of maternal serum albumin level on birthweight and gestational age: an analysis of 39200 singleton newborns.

Serum albumin plays a pivotal role in regulating plasma oncotic pressure and modulating fluid distribution among various body compartments. Previous research examining the association between maternal serum albumin levels and fetal growth yielded limited and inconclusive findings. Therefore, the specific influence of serum albumin on fetal growth remains poorly understood and warrants further investigation. A retrospective study involved 39200 women who had a singleton live birth at a tertiary-care academic medical center during the period from January 2017 to December 2020. Women were categorized into four groups according to the quartile of albumin concentration during early pregnancy: Q1 group, ≤41.0 g/L; Q2 group, 41.1-42.6 g/L; Q3 group, 42.7-44.3 g/L and Q4 group, >44.3 g/L. The main outcome measures were mid-term estimated fetal weight, birthweight and gestational age. Multivariate linear and logistic regression analysis were performed to detect the independent effect of maternal serum albumin level on fetal growth after adjusting for important confounding variables. In the crude analysis, a significant inverse correlation was found between early pregnancy maternal serum albumin levels and fetal growth status, including mid-term ultrasound measurements, mid-term estimated fetal weight, birthweight, and gestational age. After adjustment for a number of confounding factors, mid-term estimated fetal weight, birthweight, and birth height decreased significantly with increasing albumin levels. Compared to the Q2 group, the Q4 group had higher rates of preterm birth (aOR, 1.16; 95% CI, 1.01-1.34), small-for-gestational-age (aOR, 1.27; 95% CI, 1.11-1.45) and low birthweight (aOR, 1.41; 95% CI, 1.18-1.69), and lower rate of large-for-gestational-age (aOR, 0.85; 95% CI, 0.78-0.94). Moreover, to achieve the optimal neonatal outcome, women with higher early pregnancy albumin levels required a greater reduction in albumin levels in later pregnancy stages. A higher maternal serum albumin level during early pregnancy was associated with poor fetal growth, with the detrimental effects becoming apparent as early as the mid-gestation period. These findings provided vital information for clinicians to predict fetal growth status and identify cases with a high risk of adverse neonatal outcomes early on.

The association between unintended hysterotomy extensions with cesarean delivery and subsequent preterm birth

BackgroundAn increased risk of preterm birth has been observed among individuals with a previous second stage cesarean delivery compared with a previous vaginal delivery. One mechanism that may contribute to the increased risk of preterm birth following second stage cesarean delivery is the increased risk of cervical injury due to extension of the uterine incision (hysterotomy) into the cervix. Investigating the contribution of hysterotomy extension to the rate of preterm birth has not been well-studied and may shed light on the mechanisms underlying the observed relationship between mode of delivery and subsequent preterm birth. ObjectiveWe aimed to quantify the association between unintended hysterotomy extension and preterm birth in a subsequent delivery. Study designWe performed a retrospective cohort study using electronic perinatal data collected in two university-affiliated obstetrical centers. The study included patients with a primary cesarean delivery of a term, singleton live birth and a subsequent singleton birth in the same catchment (2005-2021). The primary outcome was subsequent preterm birth <37 weeks; secondary outcomes included subsequent preterm birth <34, <32 and <28 weeks. We assessed crude and adjusted associations between unintended hysterotomy extensions and subsequent preterm birth with log binomial regression models using rate ratios (RRs) and 95% confidence intervals (CIs). Adjusted models included several characteristics of the primary cesarean delivery such as maternal age, length of active labour, indication for cesarean delivery, chorioamnionitis, and maternal comorbidity. ResultsA total 4,797 patients met the study inclusion criteria. The overall rate of unintended hysterotomy extension in the primary cesarean delivery was 6.0% and the total rate of preterm birth in the subsequent pregnancy was 4.8%. Patients with an unintended hysterotomy extension were more likely to have a longer duration of active labour, chorioamnionitis, failed vacuum delivery attempt, second stage cesarean delivery, and persistent occiput posterior position of the fetal head in the primary cesarean delivery and higher rates of smoking in the subsequent pregnancy. Multivariable analyses controlling for several confounders showed that a history of hysterotomy extension is not associated with a higher risk of preterm birth <37 weeks gestation (adjusted RR 1.55, 95% CI 0.98-2.47), but is associated with preterm birth <34 weeks gestation (adjusted RR 2.49, 95% CI 1.06-5.42). ConclusionPatients with a uterine incision extension have a 2.5 times higher rate of preterm birth <34 weeks compared with patients who do not sustain this injury. This association was not observed for preterm birth <37 weeks. Future research should aim to replicate our analyses while incorporating additional data to minimize the potential for residual confounding.