Maternal Mortality in the United States: Trends and Opportunities for Prevention

A systematic review of community-based interventions to address perinatal mental health

Little is known about the scope and effectiveness of community-based interventions to address maternal perinatal mental health in the US. We searched PubMed, CINAHL, and PsychINFO in January 2024 to conduct a systematic review of studies using community-based interventions for maternal mental health from pregnancy to 1 year postpartum in the US. We reviewed 22 quantitative studies, and assessed methodological quality and effectiveness of interventions. Most were randomized trials (n = 16) with strong or good methodological quality. The majority of the studies included racially and ethnically diverse participants (n = 14), delivered interventions through community health workers, nurses, midwives, and doulas (n = 18), and had mixed effectiveness of interventions (n = 14). Limitations included small sample sizes, interventions not specifically developed for mental health, limited community involvement in designing interventions, and focus on participants with no mental health issues. Community partners augment this review with lived experience and recommendations for research and clinical practice.

Analysis of the current situation and demand for perinatal education in pregnant women in general grade A tertiary hospitals in China: a cross-sectional survey

OBJECTIVES

This study aimed to assess the factors influencing pregnant women's participation in perinatal education and their demand for educational courses.

DESIGN

A cross-sectional study.

SETTING

Tertiary hospital in Suzhou, China, July-September 2022.

PARTICIPANTS

Pregnant women from a general grade A tertiary hospital in Suzhou were recruited via online survey invitations during the specified period.

MEASURES

A self-designed scale was used to evaluate pregnant women's demand for perinatal education. Multiple response sets were employed for the assessment of multiple-choice items and analyses included frequency and cross-tabulation. Logistic regression analysis was conducted to assess the factors influencing pregnant women's participation in perinatal education.

OUTCOME

The primary outcome measured was the demand for perinatal education among pregnant women.

RESULTS

A majority (53.8%) of pregnant women expressed a preference for a mixed teaching mode combining online and offline formats. Logistic regression analysis showed that education level significantly influenced pregnant women's participation in online learning. Specifically, women with higher education levels were more likely to participate actively in online courses. Additionally, compared with those with first-born children, pregnant women with second-born children participated less actively in online learning. Pregnant women in their second and third trimesters showed greater engagement in online learning compared with those in their first trimester.

CONCLUSIONS

These findings indicate that Chinese pregnant women's preferences for perinatal education are influenced by their educational background, pregnancy history and the mode of teaching employed. The variability in educational needs underscores the importance of regularly updating course content based on participant feedback.

Predictive model for postpartum hemorrhage requiring hysterectomy in a minority ethnic region

BACKGROUND

Postpartum hemorrhage (PPH) is a leading cause of maternal mortality, and hysterectomy is an important intervention for managing intractable PPH. Accurately predicting the need for hysterectomy and taking proactive emergency measures is crucial for reducing mortality rates.

AIM

To develop a risk prediction model for PPH requiring hysterectomy in the ethnic minority regions of Qiandongnan, China, to help guide clinical decision-making.

METHODS

The study included 23490 patients, with 1050 having experienced PPH and 74 who underwent hysterectomies. The independent risk factors closely associated with the necessity for hysterectomy were analyzed to construct a risk prediction model, and its predictive efficacy was subsequently evaluated.

RESULTS

The proportion of hysterectomies among the included patients was 0.32% (74/23490), representing 7.05% (74/1050) of PPH cases. The number of deliveries, history of cesarean section, placenta previa, uterine atony, and placenta accreta were identified in this population as independent risk factors for requiring a hysterectomy. Receiver operating characteristic curve analysis of the prediction model showed an area under the curve of 0.953 (95% confidence interval: 0.928-0.978) with a sensitivity of 90.50% and a specificity of 90.70%.

CONCLUSION

The model demonstrates excellent predictive power and is effective in guiding clinical decisions regarding PPH in the ethnic minority regions of Qiandongnan, China.

BMI status and weight trajectories across females' reproductive years and risk of adverse pregnancy outcomes: a prospective cohort study

BACKGROUND

Prepregnancy body mass index (BMI) is a well-established risk factor of adverse pregnancy outcomes (APOs). The associations of long-term and short-term weight trajectories with APOs are less clear.

OBJECTIVES

This study aimed to determine the associations of weight trajectories during females' reproductive years, before and between pregnancies, with risk of APOs.

METHODS

We followed 16,241 females (25,386 singleton pregnancies) participating in a prospective cohort, the Nurses' Health Study II. Weight at age 18 y, current weight, and height were assessed at baseline (1989), and weight was updated biennially. Pregnancy history was self-reported in 2009. The primary outcome was a composite of hypertensive disorders of pregnancy (HDP), gestational diabetes (GDM), preterm birth, and stillbirth. Secondary outcomes were individual APOs. The associations of weight change with APOs were estimated using log-binomial regression, adjusting for demographic, lifestyle, reproductive factors, and baseline BMI (in kg/m2).

RESULTS

The mean (standard deviation [SD]) age at first in-study pregnancy was 33.7 (4.1) y. The mean (SD) time from age 18 y to pregnancy, baseline to pregnancy, and between pregnancies was 16.3 (4.0), 6.1 (3.0), and 2.9 (1.6) y, with a corresponding weight change of 6.4 (9.1), 3.1 (5.8), and 2.3 (4.8) kg, respectively. Of the pregnancies, 4628 (18.2%) were complicated by ≥1 APOs. Absolute weight change since age 18 y was most strongly associated with APOs. Compared with females whose weight remained stable (0-2 kg) since age 18, females who gained >2 kg had higher risk of APO (2.1-9.9 kg, relative risk [RR]: 1.12; 95% confidence interval [CI]: 1.02, 1.23; 10.0-14.9 kg, RR: 1.43; 95% CI: 1.29, 1.60; ≥15 kg, RR: 1.87; 95% CI: 1.69, 2.08), primarily driven by HDP and GDM. The associations of per 1 kg weight gain before and between pregnancies with HDP were nearly identical.

CONCLUSIONS

Weight trajectories prior to and between pregnancies were associated with the risk of APOs, particularly HDP. Longer periods of weight gain, corresponding to greater absolute weight gain, were most strongly associated with higher risk of APOs.

Wildfire particulate exposure and risks of preterm birth and low birth weight in the Southwestern United States

OBJECTIVES

Wildfire air pollution is a growing concern on human health. The study aims to assess the associations between wildfire air pollution and pregnancy outcomes in the Southwestern United States.

STUDY DESIGN

This was a retrospective cohort study.

METHODS

Birth records of 627,404 singleton deliveries in 2018 were obtained in eight states of the Southwestern United States and were linked to wildfire-sourced fine particulate matter (PM2.5) and their constituents (black carbon [BC] and organic carbon [OC]) during the entire gestational period. A double-robust logistic regression model was used to assess the associations of wildfire-sourced PM2.5 exposures and preterm birth and term low birth weight, adjusting for non-fire-sourced PM2.5 exposure and individual- and area-level confounder variables.

RESULTS

Wildfire-sourced PM2.5 contributed on average 15% of the ambient total PM2.5 concentrations. For preterm birth, the strongest association was observed in the second trimester (odds ratio [OR]: 1.06, 95% confidence interval [CI]: 1.05-1.07 for PM2.5; 1.06, 95% CI: 1.05-1.07 for BC; 1.04, 95% CI: 1.03-1.05 for OC, per interquartile range increment of exposure), with higher risks identified among non-smokers or those with low socio-economic status. For term low birth weight, the associations with wildfire-sourced PM2.5 exposures were consistently elevated for all trimesters except for the exposure averaged over the entire gestational period. Overall, the associations between wildfire-sourced PM2.5 and pregnancy outcomes were stronger than those with total PM2.5.

CONCLUSIONS

Wildfire-sourced PM2.5 and its constituents are linked to higher risks of preterm birth and term low birth weight among a significant US population than the effects of ambient total PM2.5.

Hypertension Related Co-Morbidities and Complications in Women of Sub-Saharan Africa: A Brief Review

Hypertension is the leading cause of cardiovascular disease in women, and sub-Saharan African (SSA) countries have some of the highest rates of hypertension in the world. Expanding knowledge of causes, management, and awareness of hypertension and its co-morbidities worldwide is an effective strategy to mitigate its harms, decrease morbidities and mortality, and improve individual quality of life. Hypertensive disorders of pregnancy (HDPs) are a particularly important subset of hypertension, as pregnancy is a major stress test of the cardiovascular system and can be the first instance in which cardiovascular disease is clinically apparent. In SSA, women experience a higher incidence of HDP compared with other African regions. However, the region has yet to adopt treatment and preventative strategies for HDP. This delay stems from insufficient awareness, lack of clinical screening for hypertension, and lack of prevention programs. In this brief literature review, we will address the long-term consequences of hypertension and HDP in women. We evaluate the effects of uncontrolled hypertension in SSA by including research on heart disease, stroke, kidney disease, peripheral arterial disease, and HDP. Limitations exist in the number of studies from SSA; therefore, we will use data from countries across the globe, comparing and contrasting approaches in similar and dissimilar populations. Our review highlights an urgent need to prioritize public health, clinical, and bench research to discover cost-effective preventative and treatment strategies that will improve the lives of women living with hypertension in SSA.

Association Between Doula Use on a Digital Health Platform and Birth Outcomes

OBJECTIVE

To examine the association between the use of virtual doula appointments on a comprehensive digital health platform and users' mode of birth and their birth experiences, among all platform users and Black platform users.

METHODS

Data for this retrospective cohort study were extracted from individuals who enrolled in a comprehensive digital health platform, between January 1, 2020, and April 22, 2023. Multivariable logistic regression models were used to estimate the association between number of virtual doula appointments completed on the digital health platform and odds of cesarean birth and user-reported birth experience outcomes, which included help deciding a birth preference, receiving a high level of support during pregnancy, learning medically accurate information about pregnancy complications and warning signs, and managing mental health during pregnancy, stratified by parity. The interaction of doula utilization by race for each outcome was also tested.

RESULTS

Overall 8,989 platform users were included. The completion of at least two appointments with a virtual doula on the digital health platform was associated with a reduction in odds of cesarean birth among all users (adjusted odds ratio [aOR] 0.80, 95% CI, 0.65-0.99) and among Black users (aOR 0.32, 95% CI, 0.14-0.72). Among platform users with a history of cesarean birth, completion of any number of doula visits was associated with a reduction in odds of repeat cesarean birth (one visit: aOR 0.35, 95% CI, 0.17-0.72; two or more visits: aOR 0.37, 95% CI, 0.17-0.83). Analyses among all users indicated dose-response associations between increased virtual doula use and greater odds of users reporting support in deciding a birth preference (one visit: aOR 2.35, 95% CI, 2.02-2.74; two or more visits: aOR 3.67, 95% CI, 3.03-4.44), receiving a high level of emotional support during pregnancy (one visit: aOR 1.99, 95% CI, 1.74-2.28; two or more visits: aOR 3.26, 95% CI, 2.70-3.94), learning medically accurate information about pregnancy complications and warning signs (one visit: aOR 1.26, 95% CI, 1.10-1.44; two or more visits: aOR 1.55, 95% CI, 1.29-1.88), and help managing mental health during pregnancy (one visit: aOR 1.28, 95% CI, 1.05-1.56; two or more visits: aOR 1.78, 95% CI, 1.40-2.26).

CONCLUSION

This analysis demonstrates that virtual doula support on a digital health platform is associated with lower odds of cesarean birth and an improved birth experience. Positive findings among Black users and users with vaginal birth after cesarean suggest that doula support is critical for patient advocacy, and that digital health may play a meaningful role in increasing health equity in birth outcomes.

From lab to life: how wearable devices can improve health equity

Wearable devices can provide personalised medicine at the point of need, potentially increasing access to health services and therefore improving health equity. Here the authors discuss their experiences developing wearable devices for vulnerable patient populations, including neonates and pregnant individuals.

Prepregnancy Healthy Lifestyle and Adverse Pregnancy Outcomes

OBJECTIVE

To investigate the association of healthy lifestyle factors before pregnancy (body mass index [BMI] 18.5-24.9, nonsmoking, 150 min/wk or more of moderate-to-vigorous physical activity, healthy eating [top 40% of Dietary Approaches to Stop Hypertension score], no or low-to-moderate alcohol intake [less than 15 g/d], and use of multivitamins) with risk of adverse pregnancy outcomes.

METHODS

We conducted a secondary analysis of prospectively collected data for women without chronic diseases who are participating in an ongoing cohort in the United States (the NHSII [Nurses' Health Study II]). Healthy lifestyle factors preceding pregnancy were prospectively assessed every 2-4 years from 1991 to 2009 with validated measures. Reproductive history was self-reported in 2001 and 2009. A composite outcome of adverse pregnancy outcomes that included miscarriage, ectopic pregnancy, gestational diabetes, gestational hypertension, preeclampsia, preterm birth, stillbirth, or low birth weight was assessed.

RESULTS

Overall, 15,509 women with 27,135 pregnancies were included. The mean maternal age was 35.1±4.2 years. Approximately one in three pregnancies (n=9,702, 35.8%) was complicated by one or more adverse pregnancy outcomes. The combination of six low-risk factors was inversely associated with risk of adverse pregnancy outcomes in a dose-dependent manner ( P for trend <.001). Compared with women who had zero or one healthy lifestyle factor, those with six had a 37% lower risk of adverse pregnancy outcomes (relative risk 0.63, 95% CI 0.55-0.72), driven primarily by lower risks of gestational diabetes, gestational hypertension, and low birth weight. All prepregnancy healthy lifestyle factors, except avoiding harmful alcohol consumption and regular physical activity, were independently associated with lower risk of adverse pregnancy outcomes after mutual adjustment for each other. Healthy BMI, high-quality diet, and multivitamin supplementation showed the strongest inverse associations with adverse pregnancy outcomes. If the observed relationships were causal, 19% of adverse pregnancy outcomes could have been prevented by the adoption of all six healthy lifestyle factors (population attributable risk 19%, 95% CI 13-26%).

CONCLUSION

Prepregnancy healthy lifestyle is associated with a substantially lower risk of adverse pregnancy outcomes and could be an effective intervention for the prevention of adverse pregnancy outcomes.

Why the United States needs a multifaceted definition of health

How health is conceived and operationalized is an unrecognized contributor to poor health outcomes in the United States. The United States lacks an explicit definition of health, yielding a de facto, implicit biomedical definition in research and in health care that contrasts with how many people define health for themselves. This biomedical conceptualization has led to the development of lifesaving drugs, vaccines, and procedures, but has also resulted in critical underinvestment in people across their lives, beginning in early childhood, in behavioral, environmental, and social determinants. This underinvestment across the entire lifespan in people's health traps the United States in a vicious cycle of chronic disease and unsustainable health care costs. A movement towards holistic definitions of health represents an escape by defining health in more meaningful terms that reflect people's early development, agency, functioning, adaptive capacity, well-being, and lifelong development-that is, the capability for every person to thrive. Adopting and implementing a multifaceted, holistic health definition by federal research and health agencies could transform and humanize health in the United States and advance health equity.

The Impact of New and Renewed Restrictive State Abortion Laws on Pregnancy-Capable People with Diabetes

PURPOSE OF REVIEW

When the Supreme Court handed down its decision in Dobbs v Jackson Women's Health Organization in June 2022, the constitutional right to abortion was no longer protected by Roe v Wade. Fifteen states now have total or near-total bans on abortion care or no clinics providing abortion services. We review how these restrictions affect the medical care of people with pregestational diabetes.

RECENT FINDINGS

Of the ten states with the highest percent of adult women living with diabetes, eight currently have complete or 6-week abortion bans. People with diabetes are at high risk of diabetes-related pregnancy complications and pregnancy-related diabetes complications and are disproportionately burdened by abortion bans. Abortion is an essential part of comprehensive, evidence-based diabetes care, yet no medical society has published guidelines on pregestational diabetes that explicitly discuss the importance and role of safe abortion care. Medical societies enacting standards for diabetes care and clinicians providing diabetes care must advocate for access to abortion to reduce pregnancy-related morbidity and mortality for pregnant people with diabetes.

Postpartum Hemorrhage and Tranexamic Acid: A Literature Review

This review aims to explore the postpartum hemorrhage (PPH) burden and the efficacy of prophylactic tranexamic acid (TXA) in PPH and recent indications of TXA. A comprehensive review of the literature was conducted using a combination of Medical Subject Headings keywords including "Postpartum haemorrhage," "Tranexamic acid," and "Cesarean section." PPH has been explored for epidemiology, risk factors, and pathophysiology in the first part of the article. Recent indications of TXA, obstetric indications, and the role of TXA as prophylaxis for PPH are discussed in the second part of this article. TXA has many indications apart from obstetric indications and shows a significant effect in controlling bleeding. Furthermore, TXA is more efficient in preventing PPH if administered during the final stage of labor and is a valuable option for managing obstetric bleeding.