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American Journal of Obstetrics and... Jun 2024Amniocentesis for genetic diagnosis is most commonly done between 15 and 22 weeks of gestation, but can be performed at later gestational ages. The safety and genetic...
BACKGROUND
Amniocentesis for genetic diagnosis is most commonly done between 15 and 22 weeks of gestation, but can be performed at later gestational ages. The safety and genetic diagnostic accuracy of amniocentesis have been well-established through numerous large-scale, multicenter studies for procedures before 24 weeks, but comprehensive data on late amniocentesis remain sparse.
OBJECTIVES
To evaluate the indications, diagnostic yield, safety, and maternal and fetal outcomes associated with amniocentesis performed at or beyond 24 weeks of gestation.
STUDY DESIGN
We conducted an international, multicenter retrospective cohort study examining pregnant individuals who underwent amniocentesis for prenatal diagnostic testing at gestational ages between 24w0d and 36w6d. The study, spanning from 2011 to 2022, involved nine referral centers. We included singleton or twin pregnancies with documented outcomes, excluding cases where other invasive procedures were performed during pregnancy or if amniocentesis was conducted for obstetric indications. We analyzed indications for late amniocentesis, types of genetic tests performed, their results, and the diagnostic yield, along with pregnancy outcomes and post-procedure complications.
RESULTS
Of the 752 pregnant individuals included in our study, late amniocentesis was primarily performed for the prenatal diagnosis of structural anomalies (91.6%), followed by suspected fetal infection (2.3%) and high-risk findings from cell-free DNA screening (1.9%). The median gestational age at the time of the procedure was 28w5d, and 98.3% of pregnant individuals received results of genetic testing before birth or pregnancy termination. The diagnostic yield was 22.9%, and a diagnosis was made 2.4 times more often for fetuses with anomalies in multiple organ systems (36.4%) compared to those with anomalies in a single organ system (15.3%). Additionally, the diagnostic yield varied depending on the specific organ system involved, with the highest yield for musculoskeletal anomalies (36.7%) and hydrops fetalis (36.4%) when a single organ system or entity was affected. The most prevalent genetic diagnoses were aneuploidies (46.8%), followed by copy number variants (26.3%) and monogenic disorders (22.2%). The median gestational age at delivery was 38w3d, with an average of 59 days between the procedure and delivery date. The overall complication rate within two weeks post-procedure was 1.2%. We found no significant difference in the rate of preterm delivery between pregnant individuals undergoing amniocentesis between 24-28 weeks and those between 28-32 weeks, reinforcing the procedure's safety across these gestational periods.
CONCLUSIONS
Late amniocentesis, at or after 24 weeks gestation, especially for pregnancies complicated by multiple congenital anomalies, has a high diagnostic yield and a low complication rate, underscoring its clinical utility. It provides pregnant individuals and their providers with a comprehensive diagnostic evaluation and results before delivery, enabling informed counseling and optimized perinatal and neonatal care planning.
PubMed: 38914189
DOI: 10.1016/j.ajog.2024.06.025 -
Immunohematology Jun 2024This review aims to provide a better understanding of when and why red blood cell (RBC) genotyping is applicable in transfusion medicine. Articles published within the...
This review aims to provide a better understanding of when and why red blood cell (RBC) genotyping is applicable in transfusion medicine. Articles published within the last 8 years in peer-reviewed journals were reviewed in a systematic manner. RBC genotyping has many applications in transfusion medicine including predicting a patient's antigen profile when serologic methods cannot be used, such as in a recently transfused patient, in the presence of autoantibody, or when serologic reagents are not available. RBC genotyping is used in prenatal care to determine zygosity and guide the administration of Rh immune globulin in pregnant women to prevent hemolytic disease of the fetus and newborn. In donor testing, RBC genotyping is used for resolving ABO/D discrepancies for better donor retention or for identifying donors negative for high-prevalence antigens to increase blood availability and compatibility for patients requiring rare blood. RBC genotyping is helpful to immunohematology reference laboratory staff performing complex antibody workups and is recommended for determining the antigen profiles of patients and prospective donors for accurate matching for C, E, and K in multiply transfused patients. Such testing is also used to determine patients or donors with variant alleles in the Rh blood group system. Information from this testing aides in complex antibody identification as well as sourcing rare allele-matched RBC units. While RBC genotyping is useful in transfusion medicine, there are limitations to its implementation in transfusion services, including test availability, turn-around time, and cost.
Topics: Female; Humans; Pregnancy; Blood Group Antigens; Blood Grouping and Crossmatching; Erythrocytes; Genotype; Genotyping Techniques; Transfusion Medicine
PubMed: 38910442
DOI: 10.2478/immunohematology-2024-009 -
BMC Pregnancy and Childbirth Jun 2024Differential exposure to chronic stressors by race/ethnicity may help explain Black-White inequalities in rates of preterm birth. However, researchers have not...
BACKGROUND
Differential exposure to chronic stressors by race/ethnicity may help explain Black-White inequalities in rates of preterm birth. However, researchers have not investigated the cumulative, interactive, and population-specific nature of chronic stressor exposures and their possible nonlinear associations with preterm birth. Models capable of computing such high-dimensional associations that could differ by race/ethnicity are needed. We developed machine learning models of chronic stressors to both predict preterm birth more accurately and identify chronic stressors and other risk factors driving preterm birth risk among non-Hispanic Black and non-Hispanic White pregnant women.
METHODS
Multivariate Adaptive Regression Splines (MARS) models were developed for preterm birth prediction for non-Hispanic Black, non-Hispanic White, and combined study samples derived from the CDC's Pregnancy Risk Assessment Monitoring System data (2012-2017). For each sample population, MARS models were trained and tested using 5-fold cross-validation. For each population, the Area Under the ROC Curve (AUC) was used to evaluate model performance, and variable importance for preterm birth prediction was computed.
RESULTS
Among 81,892 non-Hispanic Black and 277,963 non-Hispanic White live births (weighted sample), the best-performing MARS models showed high accuracy (AUC: 0.754-0.765) and similar-or-better performance for race/ethnicity-specific models compared to the combined model. The number of prenatal care visits, premature rupture of membrane, and medical conditions were more important than other variables in predicting preterm birth across the populations. Chronic stressors (e.g., low maternal education and intimate partner violence) and their correlates predicted preterm birth only for non-Hispanic Black women.
CONCLUSIONS
Our study findings reinforce that such mid or upstream determinants of health as chronic stressors should be targeted to reduce excess preterm birth risk among non-Hispanic Black women and ultimately narrow the persistent Black-White gap in preterm birth in the U.S.
Topics: Adult; Female; Humans; Pregnancy; Young Adult; Black or African American; Machine Learning; Premature Birth; Risk Assessment; Risk Factors; Stress, Psychological; United States; White People; White
PubMed: 38909177
DOI: 10.1186/s12884-024-06613-w -
BMC Pregnancy and Childbirth Jun 2024Early initiation of prenatal care is widely accepted to improve the health outcomes of pregnancy for both mothers and their infants. Identification of the various...
BACKGROUND
Early initiation of prenatal care is widely accepted to improve the health outcomes of pregnancy for both mothers and their infants. Identification of the various barriers to entry into care that patients experience may inform and improve health care provision and, in turn, improve the patient's ability to receive necessary care.
AIM
This study implements a mixed-methods approach to establish methods and procedures for identifying barriers to early entry to prenatal care in a medically-vulnerable patient population and areas for future quality improvement initiatives.
METHODS
An initial chart review was conducted on obstetrics patients that initiated prenatal care after their first trimester at a large federally qualified health center in Brooklyn, NY, to determine patient-specified reasons for delay. A thematic analysis of these data was implemented in combination with both parametric and non-parametric analyses to characterize the population of interest, and to identify the primary determinants of delayed entry.
RESULTS
The age of patients in the population of interest (n = 169) was bimodal, with a range of 15 - 43 years and a mean of 28 years. The mean gestational age of entry into prenatal care was 19 weeks. The chart review revealed that 8% recently moved to Brooklyn from outside of NYC or the USA. Nine percent had difficulty scheduling an initial prenatal visit within their first trimester. Teenage pregnancy accounted for 7%. Provider challenges with documentation (21%) were noted. The most common themes identified (n = 155) were the patient being in transition (21%), the pregnancy being unplanned (17%), and issues with linkage to care (15%), including no shows or patient cancellations. Patients who were late to prenatal care also differed from their peers dramatically, as they were more likely to be Spanish-speaking, to be young, and to experience a relatively long delay between pregnancy confirmation and entry into care. Moreover, the greatest determinant of delayed entry into care was patient age.
CONCLUSION
Our study provides a process for other like clinics to identify patients who are at risk for delayed entry to prenatal care and highlight common barriers to entry. Future initiatives include the introduction of a smart data element to document reasons for delay and use of community health workers for dedicated outreach after no show appointments or patient cancellations.
Topics: Humans; Female; Pregnancy; Prenatal Care; Adult; Adolescent; Young Adult; New York City; Health Services Accessibility; Patient Acceptance of Health Care; Pregnancy Trimester, First; Time Factors
PubMed: 38907207
DOI: 10.1186/s12884-024-06630-9 -
Maternal and Child Health Journal Jun 2024Global health researchers have a responsibility to conduct ethical research in a manner that is culturally respectful and safe. The purpose of this work is to describe...
PURPOSE
Global health researchers have a responsibility to conduct ethical research in a manner that is culturally respectful and safe. The purpose of this work is to describe our experiences with recruitment and retention in Pakistan, a low-middle-income country.
DESCRIPTION
We draw on two studies with a combined sample of 2161 low-risk pregnant women who participated in a pilot (n = 300) and a larger (n = 1861) prospective study of psychological distress and preterm birth at one of four centers (Garden, Hyderabad, Kharadar, Karimabad) of the Aga Khan University Hospital in Karachi, Pakistan.
ASSESSMENT
Challenges we encountered include economic hardship and access to healthcare; women's position in the family; safety concerns and time commitment; misconceptions and mistrust in the research process; and concerns related to blood draws. To mitigate these challenges, we developed culturally acceptable study incentives, involved family members in the decision-making process about study participation, partnered with participants' obstetrician-gynecologists, accommodated off site study visits, combined research visits with regular prenatal care visits, and modified research participation related to blood draws for some women.
CONCLUSION
Implementation of these mitigation strategies improved recruitment and retention success, and we are confident that the solutions presented will support future scientists in addressing sociocultural challenges while embarking on collaborative research projects in Pakistan and other low-middle-income countries.
PubMed: 38907181
DOI: 10.1007/s10995-024-03957-9 -
Sante Publique (Vandoeuvre-les-Nancy,... 2024The town of Djibo in Burkina Faso has been facing a security and humanitarian crisis since 2015. The internally displaced populations who have taken refuge there have...
INTRODUCTION
The town of Djibo in Burkina Faso has been facing a security and humanitarian crisis since 2015. The internally displaced populations who have taken refuge there have several needs, including health care. The establishment of advanced health posts is part of the health-nutrition service delivery strategy adopted to address these needs. We evaluated the contribution of these advanced health posts in terms of availability, access to care, and beneficiary satisfaction.
METHODOLOGY
We conducted a mixed descriptive and analytical cross-sectional study from May 1, 2021 to January 30, 2022 on the host population, internally displaced people, health workers, and selected health facilities in Djibo. It involved 422 people for the quantitative component. The quantitative data, including those from 2016 to 2020, were analyzed using Epi Info software, version 7.2.3.1, and completed by a qualitative component.
RESULTS
Of the nine peripheral structures studied, seven were advanced health posts offering basic care such as prenatal and postnatal consultations, infant monitoring, and vaccination. Nutritional interventions were inadequate in some of these advanced health posts. Geographic access was satisfactory, but financial access was not.
CONCLUSION
The strategy made it possible to meet basic health care needs in this crisis context, but financial access must be improved.
Topics: Humans; Burkina Faso; Cross-Sectional Studies; Female; Male; Adult; Health Services Accessibility; Emergencies; Middle Aged; Delivery of Health Care; Young Adult; Emergency Medical Services
PubMed: 38906809
DOI: No ID Found -
Midwifery Jun 2024Early identification of psychosocial vulnerability among expectant parents through psychosocial assessment is increasingly recommended within maternity care. For routine... (Review)
Review
BACKGROUND
Early identification of psychosocial vulnerability among expectant parents through psychosocial assessment is increasingly recommended within maternity care. For routine antenatal assessment, a strong recognition exists regarding conversational assessment tools. However, the knowledge base of conversational tools is limited, inhibiting their clinical use.
OBJECTIVE
Synthesising existing knowledge pertaining to antenatal conversational psychosocial assessment tools, including identifying characteristics, acceptability, performance, effectiveness and unintended consequences.
DESIGN
Mixed-method systematic review based on searches in CINAHL, PubMed, Embase, PsycINFO, Cochrane and Scopus. 20 out of 5394 studies were included and synthesised with a convergent integrated approach using a thematic analysis strategy.
FINDINGS
We identified seven antenatal psychosocial assessment tools that partially or completely utilised a conversational approach. Women's acceptability was high, and tools were generally found to support person-centred communication and the parent-health care professional relationship. Evidence regarding effectiveness and performance of conversational tools was limited. Unintended consequences were found, including some women having negative experiences related to assessment of intimate partner violence, lack of preparation and lack of relevance. High acceptability was reported by health care professionals who considered the tools as valuable and enhancing of identification of vulnerability. Unintended consequences, including lack of time and competencies as well as discomfort when assessment is very sensitive, were reported.
CONCLUSIONS
Evidence regarding conversational tools' effectiveness and performance is limited. More is known about the acceptability of conversational tools, which is generally highly acceptable among women and health care professionals. Some unintended consequences of the use of included conversational tools were identified.
PubMed: 38905861
DOI: 10.1016/j.midw.2024.104066 -
Journal of Acquired Immune Deficiency... Jul 2024There is evidence that a supportive male partner facilitates maternal HIV testing during pregnancy, increases maternal antiretroviral therapy initiation and adherence,... (Randomized Controlled Trial)
Randomized Controlled Trial
INTRODUCTION
There is evidence that a supportive male partner facilitates maternal HIV testing during pregnancy, increases maternal antiretroviral therapy initiation and adherence, and increases HIV-free infant survival. Most male partner engagement clinical strategies have focused on increasing uptake of couple-based HIV testing and counseling. We delivered a couple-based care and treatment intervention to improve antiretroviral therapy adherence in expectant couples living with HIV.
METHODS
We implemented a cluster randomized controlled trial for seroconcordant couples living with HIV, comparing retention (using a patient's medication possession ratio) in HIV care for a couple-based care and treatment intervention vs. standard of care services in rural Mozambique. The intervention included couple-based treatment, couple-based education and skills building, and couple-peer educator support.
RESULTS
We recruited 1080 couples to participate in the study. Using a linear mixed effect model with a random effect for clinic, the intervention had no impact on the medication possession ratio among women at 12 months. However, the intervention increased men's medication ratio by 8.77%. Our unadjusted logistic regression model found the odds of an infant seroconverting in the intervention group was 30% less than in the control group, but the results were not statistically significant.
DISCUSSION
Our study found no difference in maternal outcomes by study arm, but our intervention resulted in an improved medication possession ratio among male partners. We provide a community/clinic-based treatment framework that can improve outcomes among male partners. Further work needs to be done to improve social support for pregnant women and to facilitate prevention of vertical transmission to infants among couples living with HIV.
Topics: Humans; Mozambique; Female; Male; HIV Infections; Adult; Pregnancy; Rural Population; Anti-HIV Agents; Prenatal Care; Sexual Partners; Postnatal Care; Infectious Disease Transmission, Vertical; Young Adult; Pregnancy Complications, Infectious; Medication Adherence
PubMed: 38905476
DOI: 10.1097/QAI.0000000000003440 -
Medicine Jun 2024Although the physical complications of gestational diabetes mellitus (GDM) are well known, emerging evidence suggests a significant link with psychiatric conditions such... (Review)
Review
Although the physical complications of gestational diabetes mellitus (GDM) are well known, emerging evidence suggests a significant link with psychiatric conditions such as schizophrenia (SCZ). This review aimed to explore the extent, nature, and implications of the association between GDM and SCZ, exploring how the 2 conditions may reciprocally influence each other. We conducted a comprehensive literature review and, analyzed clinical and mechanistic evidence supporting the mutual effects of GDM and SCZ. This review examined factors such as neurodevelopment and the impact of antipsychotics. The study found that Maternal GDM increases the risk of SCZ in offspring. Conversely, women with SCZ were more prone to hyperglycemic pregnancies. The research highlights significant regional variations in GDM prevalence, with the highest rate in the Middle East, North Africa, and South-East Asia regions. These regional variations may have an impact on the epidemiology of SCZ. Furthermore, this review identifies the potential biological and environmental mechanisms underlying these associations. There is a bidirectional relationship between GDM and SCZ, with each disorder potentially exacerbating the others. This relationship has significant implications for maternal and offspring health, particularly in regions with high GDM prevalence. These findings underline the need for integrated care approaches for women with SCZ during pregnancy and the importance of monitoring and managing GDM to mitigate the risk of SCZ in the offspring. Notably, this study recognizes the need for further research to fully understand these complex interactions and their implications for healthcare.
Topics: Humans; Diabetes, Gestational; Pregnancy; Female; Schizophrenia; Risk Factors; Antipsychotic Agents; Prevalence; Prenatal Exposure Delayed Effects
PubMed: 38905391
DOI: 10.1097/MD.0000000000038677 -
Journal of Ultrasound Jun 2024This is an extremely rare case of complicated fetal esophageal atresia (EA) with tracheoesophageal fistula (TEF) and interrupted inferior vena cava (IVC) diagnosed by...
PURPOSE
This is an extremely rare case of complicated fetal esophageal atresia (EA) with tracheoesophageal fistula (TEF) and interrupted inferior vena cava (IVC) diagnosed by prenatal ultrsonography and successfully treated with surgical repair.
METHODS
A 35-year-old pregnant woman was referred to our center for prenatal ultrasound, and the fetus was found to have a series of abnormalities, such as an interrupted IVC associated with a dilated azygos vein, an upper neck pouch sign of the thorax, and polyhydramnios. With suspicion of EA with TEF and interrupted IVC, the infant was born at 39 weeks of gestation, and successfully underwent the surgical operation.
RESULTS
The baby was doing well after 21 months of follow-up.
CONCLUSION
It is beneficial for the prenatal ultrasonic diagnosis of EA with TEF in optimizing labor care, postpartum treatment, and prompting neonatal management.
PubMed: 38904735
DOI: 10.1007/s40477-024-00879-8