Relationship between risk factor profile and prescription of low-dose aspirin for preeclampsia prevention

Prevention of maternal mortality with interventions in primary care services: What can we do?

Despite global progress and a marked reduction in maternal mortality ratio worldwide, the burden of maternal death and morbidity remains a huge challenge, especially among low- and middle-income settings. Maternal mortality is determined by multiple components. As a result, sustainable strategies require not only the implementation of effective health policies but also social development. In this narrative review, we discuss strategies to improve the maternal mortality ratio based on recent advances in public health. Primary care plays a key role in identifying background conditions, risk factors and early signs of some major causes of maternal mortality and morbidity. Antenatal care also addresses other conditions that influence outcomes: unwanted pregnancies, nutrition, sexually transmitted illnesses, family planning, immunization, and child health. Therefore, awareness about major causes of maternal mortality, direct and indirect targeted interventions to adequately identify risk factors, implement prophylactic interventions when available and guarantee early diagnosis, can certainly impact outcomes.

Risk and Protective Factors for Preterm Birth Among Racial, Ethnic, and Socioeconomic Groups in California

Importance

Preterm birth (PTB) (gestational age <37 weeks) is a major cause of infant mortality and morbidity in the US and is marked by racial and ethnic and socioeconomic inequities. Further research is needed to elucidate the association of risk and protective factors with trends in PTB rates and with related inequities.

Objective

To describe the association of PTB rates with inequities as well as related risk and protective factors over the past decade in a US population-based cohort.

Design, Setting, and Participants

This retrospective cohort study of singleton live births in California from January 1, 2011, to December 31, 2022, was conducted using vital statistics records and hospital records. The cohort included births with a gestational age of 22 to 44 weeks.

Main Outcomes and Measures

Preterm birth rates by racial and ethnic group and by public and nonpublic insurance (considered as a proxy for socioeconomic status) were studied across years. Log-linear regression (relative risks with 95% CIs) was used to evaluate risk and protective factors within groups. Associations of PTB rates with risk and protective factors were assessed.

Results

This study included 5 431 018 singleton live births to individuals who identified as American Indian or Alaska Native (0.3%), Asian (14.2%), Black (4.9%), Hispanic (47.8%), or White (27.0%). A total of 43.1% of births were to individuals with public health insurance. From 2011 to 2022, the overall PTB rate increased from 6.8% to 7.5% (change [SE], 10.6% [0.6%]; z score of 18.5; P < .001). Differences in PTB rates and associated changes were observed for racial and ethnic groups and insurance groups. For example, 2022 PTB rates ranged from 5.8% among White individuals with nonpublic insurance to 11.3% among Black individuals with public health insurance. From 2011 to 2022, PTB rates decreased from 9.1% to 8.8% (change [SE], -3.5% [4.2]; z score of -0.8; P = .42) among Black individuals with nonpublic insurance, whereas they increased from 6.4% to 9.5% (change [SE], 49.8% [16.0%]; z score of 3.1; P = .002) among American Indian or Alaska Native individuals with nonpublic insurance. Increases in some risk factors (eg, preexisting diabetes, sexually transmitted infections, mental health conditions) were observed in most groups, and decreases in some protective factors (eg, participation in the California Women, Infants, and Children program) (P for trend < .001 from 2011 to 2021) were observed mostly in low-income groups.

Conclusions and Relevance

In this cohort study of singleton live births in California, PTB rates increased in many groups. Persistent racial and ethnic and socioeconomic inequities were also observed. Changes in risk and protective factors provided clues to patterns of PTB. These data point to an urgent need to address factors associated with PTB at both the individual and population levels.

Missed opportunity for aspirin prophylaxis for preeclampsia prevention: a cross-sectional study from Sub-Saharan Africa

BACKGROUND

Recent studies showed that aspirin for preeclampsia prevention is underused despite its effectiveness in preventing preeclampsia among patients with moderate and high risk factors. Little is known about this issue in the Sub-Saharan setting, including Ethiopia.

OBJECTIVE

This study aimed to determine the missed opportunity for aspirin prophylaxis among candidates for this preeclampsia preventive intervention at a national tertiary referral hospital in Ethiopia.

STUDY DESIGN

This was a cross-sectional study on pregnant women who had preeclampsia and who were managed at the St. Paul's Hospital Millennium Medical College (Ethiopia) over a 6-month period (April 1-September 30, 2023). Data were collected prospectively using a structured questionnaire. The primary outcome was the proportion of women who had an indication for aspirin prophylaxis for preeclampsia prevention but were not given the opportunity (missed opportunity for aspirin) among all pregnant preeclampsia patients presenting to our hospital. Secondary outcomes were adverse maternal and perinatal outcomes. Data were analyzed using SPSS version 23. Descriptive statistics were employed to analyze the data. Proportions and percentages were used to present the results.

RESULTS

A total of 427 pregnant women with preeclampsia were screened for inclusion and 32 of them were excluded based on the study criteria. Among the 395 pregnant women with preeclampsia who were included in the final analysis, 195 (50.6%) had an indication for aspirin prophylaxis for the prevention of preeclampsia. The mean systolic and diastolic blood pressure measurements at presentation were 153.8±12.8 and 100.6±8.5 mm Hg, respectively. Most patients had proteinuria (51.7% of the participants had a urine test-strip protein level of +2, whereas 18.5% [74/395] had a urine test-strip protein level of +1 and 10.9% had 24-hour urine protein levels in the preeclampsia range). Among the women who had an indication for aspirin prophylaxis, only 1.1% received aspirin (the missed opportunity for aspirin prophylaxis for preeclampsia prevention was 98.9%). The perinatal morality rate was 11.9%, whereas the neonatal intensive care unit admission rate was 20.5%. The rate of a low Apgar score at 5 minutes was 8.9%. Eight mothers (2.1%) developed hemolysis, elevated liver enzymes, and low platelet count syndrome, whereas another 3 (0.8%) mothers developed a pulmonary edema.

CONCLUSION

In this study, the missed opportunity for administration of aspirin prophylaxis for the prevention of preeclampsia was high although more than half of the study subjects were candidates for this preventive intervention. Preeclampsia was also associated with higher rates of adverse perinatal outcomes and serious maternal morbidity.