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ELife Jun 2024Preterm birth is the leading cause of neonatal morbidity and mortality worldwide. Most cases of preterm birth occur spontaneously and result from preterm labor with...
BACKGROUND
Preterm birth is the leading cause of neonatal morbidity and mortality worldwide. Most cases of preterm birth occur spontaneously and result from preterm labor with intact (spontaneous preterm labor [sPTL]) or ruptured (preterm prelabor rupture of membranes [PPROM]) membranes. The prediction of spontaneous preterm birth (sPTB) remains underpowered due to its syndromic nature and the dearth of independent analyses of the vaginal host immune response. Thus, we conducted the largest longitudinal investigation targeting vaginal immune mediators, referred to herein as the immunoproteome, in a population at high risk for sPTB.
METHODS
Vaginal swabs were collected across gestation from pregnant women who ultimately underwent term birth, sPTL, or PPROM. Cytokines, chemokines, growth factors, and antimicrobial peptides in the samples were quantified via specific and sensitive immunoassays. Predictive models were constructed from immune mediator concentrations.
RESULTS
Throughout uncomplicated gestation, the vaginal immunoproteome harbors a cytokine network with a homeostatic profile. Yet, the vaginal immunoproteome is skewed toward a pro-inflammatory state in pregnant women who ultimately experience sPTL and PPROM. Such an inflammatory profile includes increased monocyte chemoattractants, cytokines indicative of macrophage and T-cell activation, and reduced antimicrobial proteins/peptides. The vaginal immunoproteome has improved predictive value over maternal characteristics alone for identifying women at risk for early (<34 weeks) sPTB.
CONCLUSIONS
The vaginal immunoproteome undergoes homeostatic changes throughout gestation and deviations from this shift are associated with sPTB. Furthermore, the vaginal immunoproteome can be leveraged as a potential biomarker for early sPTB, a subset of sPTB associated with extremely adverse neonatal outcomes.
FUNDING
This research was conducted by the Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS) under contract HHSN275201300006C. ALT, KRT, and NGL were supported by the Wayne State University Perinatal Initiative in Maternal, Perinatal and Child Health.
Topics: Humans; Female; Longitudinal Studies; Pregnancy; Vagina; Premature Birth; Adult; Retrospective Studies; Proteome; Cytokines; Fetal Membranes, Premature Rupture; Young Adult; Immunoproteins
PubMed: 38913421
DOI: 10.7554/eLife.90943 -
Journal of Surgical Case Reports Jun 2024Uterine rupture is specified as a complete laceration of the uterine wall, including its serosa, leading to a connection between the endometrial and peritoneal chambers....
Uterine rupture is specified as a complete laceration of the uterine wall, including its serosa, leading to a connection between the endometrial and peritoneal chambers. It can occur in any stage of pregnancy and is considered a severe and perhaps fatal complication. A 35-year-old woman at 9 weeks of gestation with a medical history of five prior cesarean sections presented with lower abdominal pain that had lasted for 5 hr. We detected small amounts of free fluid in the Douglas pouch using ultrasound. Subsequently, a laparotomy revealed a cesarean scar dehiscence from a non-cesarean scar pregnancy. Patients who experience a uterine rupture may have vague symptoms, severe abdominal discomfort, abnormal uterine bleeding, and severe hemorrhagic shock, depending on their gestational age. Ultrasound imaging can be used to diagnose this fatal condition in addition to laparoscopy to immediately identify and treat the issue in urgent cases.
PubMed: 38912433
DOI: 10.1093/jscr/rjae422 -
Frontiers in Global Women's Health 2024Home delivery, which is the process of childbirth at one's residence rather than in a health facility, is a major reason for maternal mortality caused by obstetric...
INTRODUCTION
Home delivery, which is the process of childbirth at one's residence rather than in a health facility, is a major reason for maternal mortality caused by obstetric complications, such as sepsis, hypertensive disorders, and hemorrhage. Maternal and child mortality remains high in developing countries despite efforts made to reduce these outcomes. This is mainly due to poor utilization of institution-based healthcare services. Moreover, there is a limited number of studies that have addressed the determinants of home delivery in Ethiopia, including the study area. This study aims to identify the determinants of home delivery in Bore District, East Guji Zone, Southern Ethiopia, in 2022.
METHODS
A community-based unmatched case-control study was conducted from 18 May to 5 July 2022 among 498 women (249 cases and 249 controls) who gave birth in Bore District. The case group included women who gave birth at home, while the control group included those who gave their last birth at health institutions. A multistage sampling technique was employed to select the study participants. Data were collected using the KoboToolbox digital software and exported to SPSS Version 26.0 for analysis. A multivariable logistic regression analysis was done to declare the statistical significance of the association of the the independent variables and home delivery.
RESULTS
The study included a total of 496 respondents with a mean age of 32.5 (SD = ±5.5) for the case group and 33.7 (SD = ±5.2) for the control group. Among the assessed determinants of home delivery were not attending antenatal care (ANC) visits [adjusted odds ratio (AOR) = 5.6, 95% CI: 2.0-15.16], missing pregnant women's conferences (AOR = 3.2, 95% CI: 1.65-8.32), not receiving health education on pregnancy-related complications (AOR = 2.2, 95% CI: 1.1-4.3), inadequate knowledge of pregnancy-related danger signs (AOR = 6.0, CI: 3.0-11.9), inadequate knowledge about pregnancy-related complications (AOR = 3.0, CI: 1.55-6.13), and unfavorable attitude (AOR = 6.9, 95% CI: 2.16-22.6).
CONCLUSION
In this study, not attending ANC visits, missing pregnant women's conferences, not receiving health education on pregnancy-related complications, inadequate knowledge of pregnancy-related danger signs, inadequate knowledge about pregnancy-related complications, and unfavorable attitudes were identified as determinants of home delivery. The district health office and other stakeholders should work on strengthening maternal health service delivery through appropriate ANC visits and participation in pregnant women's conferences and improving community awareness about pregnancy at all levels.
PubMed: 38912412
DOI: 10.3389/fgwh.2024.1236758 -
HRB Open Research 2023Improved Pregnancy Outcomes via Early Detection (IMPROvED) is a multi-centre, European phase IIa clinical study. The primary aim of IMPROvED is to enable the assessment...
BACKGROUND
Improved Pregnancy Outcomes via Early Detection (IMPROvED) is a multi-centre, European phase IIa clinical study. The primary aim of IMPROvED is to enable the assessment and refinement of innovative prototype preeclampsia risk assessment tests based on emerging biomarker technologies. Here we describe IMPROvED's profile and invite researchers to collaborate.
METHODS
A total of 4,038 low-risk nulliparous singleton pregnancies were recruited from maternity units in Ireland (N=1,501), United Kingdom (N=1,108), The Netherlands (N=810), and Sweden (N=619) between November 2013 to August 2017. Participants were interviewed by a research midwife at ~11 weeks (optional visit), ~15 weeks, ~20 weeks, ~34 weeks' gestation (optional visit), and postpartum (within 72-hours following delivery).
FINDINGS TO DATE
Clinical data included information on maternal sociodemographic, medical history, and lifestyle factors collected at ~15 weeks' gestation, and maternal measurements, collected at each study visit. Biobank samples included blood, urine, and hair collected at each study visit throughout pregnancy in all units plus umbilical cord/blood samples collected at birth in Ireland and Sweden. A total of 74.0% (N=2,922) had an uncomplicated pregnancy, 3.1% (N=122) developed preeclampsia, 3.6% (N=143) had a spontaneous preterm birth, and 10.5% (N=416) had a small for gestational age baby. We evaluated a panel of metabolite biomarkers and a panel of protein biomarkers at 15 weeks and 20 weeks' gestation for preeclampsia risk assessment. Their translation into tests with clinical application, as conducted by commercial entities, was hampered by technical issues and changes in test requirements. Work on the panel of proteins was abandoned, while work on the use of metabolite biomarkers for preeclampsia risk assessment is ongoing.
FUTURE PLANS
In accordance with the original goals of the IMPROvED study, the data and biobank are now available for international collaboration to conduct high quality research into the cause and prevention of adverse pregnancy outcomes.
PubMed: 38911611
DOI: 10.12688/hrbopenres.13812.2 -
Case Reports in Women's Health Jun 2024Caesarean scar pregnancy (CSP) occurs when the gestational sac implants in the region of a scar from a previous caesarean delivery. CSP can lead to life-threatening...
Caesarean scar pregnancy (CSP) occurs when the gestational sac implants in the region of a scar from a previous caesarean delivery. CSP can lead to life-threatening complications, including severe haemorrhage, uterine rupture, placenta accreta spectrum (PAS) and hysterectomy. A 40-year-old woman with one previous caesarean was referred to the specialist centre at 17 weeks of gestation with concerns about CSP. At 19 weeks, she was admitted with abdominal pain. Due to raised body habitus, accurate ultrasound assessment was challenging, necessitating reliance on magnetic resonance imaging (MRI). The patient desired to continue the pregnancy, but due to pain and concerns about uterine rupture she consented to a laparotomy to potentially terminate the pregnancy. Findings during the laparotomy were reassuring, leading to the decision not to terminate the pregnancy. The patient remained hospitalised until delivery by caesarean-hysterectomy at 33 weeks. Histopathology confirmed the PAS diagnosis. This case highlights the importance of achieving early diagnosis and obtaining clear sonographic findings. It emphasises the pitfalls of relying on MRI due to its tendency to over-diagnose severity. It emphasises the urgency for improved training in this domain. Early sonographic diagnosis allows safer performance of termination of pregnancy. It also provides women who continue with the pregnancy useful prognostic signs to facilitate decisions on the optimal gestation for delivery. Determining optimal conservative management for CSP remains an ongoing challenge. This case emphasises the importance of multidisciplinary discussion, comprehensive patient counselling and involving patients in their care planning, to create an individualised and adaptable treatment plan.
PubMed: 38911044
DOI: 10.1016/j.crwh.2024.e00626 -
Drug Design, Development and Therapy 2024We aimed to evaluate the effect of intravenous esketamine combined with dexmedetomidine as supplemental analgesia in reducing intraoperative visceral pain... (Randomized Controlled Trial)
Randomized Controlled Trial
Esketamine Combined with Dexmedetomidine to reduce Visceral Pain During elective Cesarean Section Under Combined Spinal-Epidural Anesthesia: A double-Blind Randomized Controlled Study.
PURPOSE
We aimed to evaluate the effect of intravenous esketamine combined with dexmedetomidine as supplemental analgesia in reducing intraoperative visceral pain during elective cesarean section under combined spinal-epidural anesthesia (CSEA).
PATIENTS AND METHODS
A total of 269 parturients scheduled for elective cesarean section under CSEA between May 2023 and August 2023 were assessed. The parturients were randomly allocated to receiving either intravenous infusion of 0.3-mg/kg esketamine combined with 0.5-μg/kg dexmedetomidine (group ED, n=76), 0.5-μg/kg dexmedetomidine (group D, n=76), or normal saline (group C, n=76) after umbilical cord clamping. The primary outcome was intraoperative visceral pain. Secondary outcomes included the visual analog scale (VAS) score for pain evaluation and other intraoperative complications.
RESULTS
The incidence of visceral pain was lower in group ED [9 (12.7%)] than in group D [32 (43.8%)] and group C [36 (48.6%), <0.0001]. The VAS score was also lower in group ED when exploring abdominal cavity [0 (0), <0.0001] and suturing the muscle layer [0 (0), =0.036]. The mean arterial pressure was higher in group D [83 (9) mmHg] and group ED [81 (11) mmHg] than in group C [75 (10) mmHg, <0.0001] after solution infusion. The heart rate after infusion of the solution was lower in group D [80 (12) bpm] than in group C [86 (14) bpm] and group ED [85 (12) bpm, = 0.016]. The incidence of transient neurologic or mental symptoms was higher in group ED compared to group C and group D (76.1% vs 18.9% vs 23.3%, <0.0001).
CONCLUSION
During cesarean section, 0.3-mg/kg esketamine combined with 0.5-μg/kg dexmedetomidine can alleviate visceral traction pain and provide stable hemodynamics. Parturients receiving this regimen may experience transient neurologic or mental symptoms that can spontaneously resolve at the end of the surgery.
Topics: Humans; Dexmedetomidine; Ketamine; Double-Blind Method; Cesarean Section; Female; Adult; Visceral Pain; Anesthesia, Spinal; Pregnancy; Anesthesia, Epidural; Drug Therapy, Combination; Elective Surgical Procedures
PubMed: 38911034
DOI: 10.2147/DDDT.S460924 -
The Journal of Maternal-fetal &... Dec 2024The current study aims to evaluate the correlation between oxytocin augmentation and postpartum hemorrhage. (Meta-Analysis)
Meta-Analysis
OBJECTIVE
The current study aims to evaluate the correlation between oxytocin augmentation and postpartum hemorrhage.
METHOD
PubMed, Web of Science, and Scopus has been searched for studies assessing the correlation between oxytocin augmentation and postpartum hemorrhage up to January 24, 2024. The search strategy included relevant keywords related to PPH and oxytocin augmentation. The risk of bias assessment was conducted by two reviewers using the Newcastle-Ottawa Scale (NOS). To pool the effects sized of included studies odds ratios (OR) of interest outcome with their 95% confidence interval (CI) were used.
RESULTS
Eight studies were included in this meta-analysis. The pooled analysis of the included studies showed a statistically significant association between oxytocin augmentation and increased odds of PPH (pooled odds ratio [OR] = 1.27, 95% confidence interval [CI]: 1.05-1.53; I2 = 84.94%; = 0.01). Publication bias was assessed using funnel plots, which appeared relatively asymmetrical, indicating significant publication bias. Galbraith plot and trim and fill plot were used for publication bias. Sensitivity analyses were performed by leave one out method.
CONCLUSION
This meta-analysis suggests that using oxytocin for labor augmentation is linked to a significant increase in the risk of PPH. It highlights the need for careful monitoring and consideration when using oxytocin, especially in low and middle-income countries where guidelines and supervision are crucial.
Topics: Humans; Oxytocin; Female; Postpartum Hemorrhage; Pregnancy; Oxytocics
PubMed: 38910114
DOI: 10.1080/14767058.2024.2369210 -
The Journal of Maternal-fetal &... Dec 2024Current guidelines recommend multidisciplinary cardiovascular obstetric programs (CVOB) to manage complex pregnant patients with cardiovascular disease. Minimal...
BACKGROUND
Current guidelines recommend multidisciplinary cardiovascular obstetric programs (CVOB) to manage complex pregnant patients with cardiovascular disease. Minimal evaluation of these programs exists, with most of these programs offered at university-based centers.
METHODS
A cohort of 113 patients managed by a CVOB team at a non-university health system (2018-2019) were compared to 338 patients seen by cardiology prior to the program (2016-2017). CVOB patients were matched with comparison patients (controls) on modified World Health Organization (mWHO) category classification, yielding a cohort of 102 CVOB and 102 controls.
RESULTS
CVOB patients were more ethnically diverse and cardiovascular risk was higher compared to controls based on mWHO ≥ II-III (57% vs 17%) and. After matching, CVOB patients had more cardiology tests during pregnancy (median of 8 tests vs 5, < .001) and were more likely to receive telemetry care (32% vs 19%, = .025). The median number of perinatology visits was significantly higher in the CVOB group (8 vs 2, < .001). Length of stay was a half day longer for vaginal delivery patients in the CVOB group (median 2.66 vs 2.13, = .006).
CONCLUSION
Implementation of a CVOB program resulted in a more diverse patient population than previously referred to cardiology. The CVOB program participants also experienced a higher level of care in terms of increased cardiovascular testing, monitoring, care from specialists, and appropriate use of medications during pregnancy.
Topics: Humans; Female; Pregnancy; Adult; Pregnancy Complications, Cardiovascular; Program Evaluation; Case-Control Studies; Obstetrics; Retrospective Studies; Cardiovascular Diseases; Cardiology; Patient Care Team
PubMed: 38910113
DOI: 10.1080/14767058.2024.2367090 -
Rural and Remote Health Jun 2024Maternity unit closures in rural and remote settings of Australia have left a substantial gap in services for pregnant women. In the absence of midwives, and when women...
INTRODUCTION
Maternity unit closures in rural and remote settings of Australia have left a substantial gap in services for pregnant women. In the absence of midwives, and when women are unable to attend a maternity facility, registered nurses (RNs) are required to fill the void. While maternity education can attempt to prepare RNs for such encounters, there is little documented to suggest it meets all their physical and psychological needs. The existing challenges for health professionals, practising a vast generalist scope of practice while living and working in a rural and remote location, have been well researched and documented. How nurses feel about the expectation that they work outside their scope of practice to provide maternity care in a rural and remote setting in Australia has not been asked until now. This study explores the perceptions and experiences of RNs who find themselves in this situation.
METHODS
The study utilised a hermeneutic phenomenological methodology to examine the experiences and perceptions of rural and remote nurses providing care for pregnant women. RNs working in rural and remote health facilities that had no maternity services were recruited by a purposive sampling method. Semistructured conversational interviews were recorded and transcribed verbatim. Data analysis was guided by van Manen's analytical approach.
RESULTS
Eight nurses participated, and from the data three themes, each with several subthemes, emerged: 'being-in-the-world of the rural and remote nurse' - described how participants viewed rural and remote nursing as an entity with unchangeable aspects that could not be considered in isolation; 'scope of practice - unprepared or underprepared' described how, despite their existing and extensive nursing skills, participants felt ill-equipped theoretically, practically and mentally to care for pregnant women; 'moral distress' - participants expanded their feelings of unpreparedness to include inadequacy, fear, and appropriateness of care delivery.
DISCUSSION
The realism of rural and remote nursing practice demonstrates that at some point in their career, rural and remote nurses will care for a labouring and/or pregnant woman at high risk for complications. Participants in this study appeared open and honest in their interviews, displaying pride at their extensive nursing skills and job satisfaction. However, they were unanimous in their discussions of what being a nurse and providing maternity care in a rural and remote setting meant to themselves and to pregnant women. They suggested care was fragmented and inadequate from a workforce that is inadequately prepared and stressed.
CONCLUSION
This study has highlighted another concerning aspect of rural and remote midwifery care - the experiences and perceptions of eight nurses delivering care that has previously been overlooked. The united voice of the RNs in this study warrants a platform to speak from and deserves acknowledgement and attention from government and midwifery policy drivers. These nurses, and the women receiving their care, deserve more.
Topics: Humans; Female; Pregnancy; Rural Health Services; Australia; Attitude of Health Personnel; Maternal Health Services; Adult; Rural Nursing; Midwifery; Rural Population; Qualitative Research; Interviews as Topic
PubMed: 38909988
DOI: 10.22605/RRH8721 -
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: Humans; Female; Premature Birth; Pregnancy; Machine Learning; White People; Black or African American; Stress, Psychological; Adult; Risk Factors; United States; Young Adult; Risk Assessment
PubMed: 38909177
DOI: 10.1186/s12884-024-06613-w