Maternal death: Case definition and guidelines for data collection, analysis, and presentation of immunization safety data

Defining and reporting adverse events of special interest in comparative maternal vaccine studies: a systematic review

Introduction

The GAIA (Global Alignment on Immunisation Safety Assessment in Pregnancy) consortium was established in 2014 with the aim of creating a standardised, globally coordinated approach to monitoring the safety of vaccines administered in pregnancy. The consortium developed twenty-six standardised definitions for classifying obstetric and infant adverse events. This systematic review sought to evaluate the current state of adverse event reporting in maternal vaccine trials following the publication of the case definitions by GAIA, and the extent to which these case definitions have been adopted in maternal vaccine safety research.

Methods

A comprehensive search of published literature was undertaken to identify maternal vaccine research studies. PubMed, EMBASE, Web of Science, and Cochrane were searched using a combination of MeSH terms and keyword searches to identify observational or interventional studies that examined vaccine safety in pregnant women with a comparator group. A two-reviewer screening process was undertaken, and a narrative synthesis of the results presented.

Results

14,737 titles were identified from database searches, 435 titles were selected as potentially relevant, 256 were excluded, the remaining 116 papers were included. Influenza vaccine was the most studied (25.0%), followed by TDaP (20.7%) and SARS-CoV-2 (12.9%).Ninety-one studies (78.4%) were conducted in high-income settings. Forty-eight (41.4%) utilised electronic health-records. The majority focused on reporting adverse events of special interest (AESI) in pregnancy (65.0%) alone or in addition to reactogenicity (27.6%). The most frequently reported AESI were preterm birth, small for gestational age and hypertensive disorders. Fewer than 10 studies reported use of GAIA definitions. Gestational age assessment was poorly described; of 39 studies reporting stillbirths 30.8% provided no description of the gestational age threshold.

Conclusions

Low-income settings remain under-represented in comparative maternal vaccine safety research. There has been poor uptake of GAIA case definitions. A lack of harmonisation and standardisation persists limiting comparability of the generated safety data.

Predictive Factors for the Common Adverse Maternal and Fetal Outcomes in Pregnancies Complicated by Systemic Lupus Erythematosus

Objectives

This study aimed to evaluate the outcomes of pregnancy in patients with systemic lupus erythematosus (SLE). It focused on identifying clinical and laboratory markers that could predict the common adverse pregnancy outcomes (APOs) after 20 weeks of gestation, namely preeclampsia (PE) and preterm birth (PTB) in them.

Methods

Pregnant SLE women who delivered at the study center from 2010 to 2023 were retrospectively analyzed. Categorical variables were evaluated using the chi-square test or Fisher's exact test, while continuous variables underwent Mann-Whitney U testing. Stepwise regression was used to assess the predictors of pregnancy outcomes.

Results

The study enrolled 445 pregnancies in 408 women diagnosed with SLE. Of these, 202 pregnancies (45.4%) resulted in at least one APO. Disease flare-ups, hypertension, and proteinuria during the first trimester were primary predictors of at least one APO and PTB. The most frequently recorded maternal adverse outcome was PE (14.6%), while PTB accounted for 32.6% of fetal adverse outcomes. Multivariate regression analysis identified hypertension, history of PE, associated antiphospholipid syndrome (APS), proteinuria, and low serum C4 in the first trimester as independent risk factors for PE. Regular follow-ups at our center correlated with lower risks of APOs, PE, and PTB. APS also emerged as a risk factor for PTB, whereas the use of hydroxychloroquine (HCQ) during pregnancy seemed to protect against PTB.

Conclusion

For pregnancies complicated by SLE, we recommend early pregnancy screening for proteinuria-even in the absence of lupus nephritis-as well as continued use of HCQ and routine prenatal care throughout pregnancy.

Standardizing case definitions for monitoring the safety of maternal vaccines globally: GAIA definitions, a review of progress to date

In 2014, the Global Alignment on Immunization safety Assessment in pregnancy consortium (GAIA) was formed, with the goal of developing a harmonized, globally-concerted approach to actively monitor the safety of vaccines in pregnancy. A total of 26 standardized definitions for the classification of adverse events have been developed. The aim of this review was to identify and describe studies undertaken to assess the performance of these definitions. A literature search was undertaken to identify published studies assessing the performance of the definitions, and reference lists were snowballed. Data were abstracted by two investigators and a narrative review of the results is presented. Four studies that have evaluated 13 GAIA case definitions (50%) were identified. Five case definitions have been assessed in high-income settings only. Recommendations have been made by the investigators to improve the performance of the definitions. These include ensuring consistency across definitions, removal of the potential for ambiguity or variations in interpretation and ensuring that higher-level criteria are acceptable at lower levels of confidence. Future research should prioritize the key case definitions that have not been assessed in low- and middle-income settings, as well as the 13 that have not undergone any validation.

Geographical and Socioeconomic Inequalities in Maternal Mortality in Ethiopia

In Ethiopia, social inequalities are common among women residing in deprived communities and between the poor and the rich. This study aimed to assess geographical and socioeconomic inequalities in maternal mortality using nationally representative data from Ethiopian Demographic and Health Surveys conducted from 2000 to 2019 (inclusive). Four health-related geographical and socioeconomic factors were assessed. Four relative and absolute health-related inequality measures were also used: rate difference, rate ratio, population attributable risk, and population attributable fraction. A total of 61,610 sister siblings were included. The highest reported inequalities in maternal mortality were residence-related (46% in 2005 among rural women), region-related (66% in 2005 among women in Beshangul-Gumuz regional state), education-related (83% in 2011 among women with primary education), and wealth-related (47% in 2000 among poorer women). So, if education-related inequalities in maternal mortality alone had been averted, the national maternal mortality could have been reduced by 52% in 2000, 51% in 2005, 83% in 2011, and 76% in 2016. In conclusion, inequalities in maternal mortality were high and concentrated among poorer women, women with lower educational status, and rural areas. Therefore, reducing the effects of poverty including social determinants of maternal mortality is recommended.

Assessment of knowledge of obstetric danger signs and its associated factors among pregnant women attending antenatal clinic of rural health training centre of a medical college: A cross-sectional study from Rajasthan

Background and Objectives

Women and newborns are most vulnerable during and immediately after childbirth. The majority of maternal and newborn deaths occurring in developing countries can be attributed to inabilities to access health services, illiteracy, social stigmas, and gender inequalities. Women should be made aware of the danger signs so that health care services can be assessed on time, thus reducing maternal mortality. The objectives of this study were to assess the knowledge about obstetric danger signs and to find out various factors associated with them among pregnant women attending antenatal care (ANC) clinic at the Rural Health Training Centre (RHTC) attached to a Medical College.

Methodology

This cross-sectional study was conducted at the ANC clinic of the RHTC attached to a medical college of Rajasthan for a period of 4 months and included 353 pregnant women. A pre-designed and pre-tested schedule was used. Mean knowledge scores were computed and knowledge was classified into adequate and inadequate. Descriptive statistics were used and the Pearson Chi-square test was used as a test of significance, taking a P value of < 0.05 as statistically significant.

Results

Educational status of pregnant women, antenatal check-up status and gravid status had significant associations with the knowledge of obstetric danger signs.

Conclusions

About half of the respondents had adequate knowledge about the obstetrics danger signs. Therefore, there is a strong need of creating awareness in the community by improving access to health care.

Protocol for a pregnancy registry of maternal and infant outcomes in Uganda –The PREPARE Study

Background: Pregnancy is associated with complications which must be differentiated from adverse events associated with the administration of vaccines during pregnancy both in clinical trials and post licensure surveillance. The frequency of pregnancy related complications varies significantly by geographical location and the prevalence of pregnancy and neonatal outcomes are poorly documented in most low-resource settings. In preparation for Group B Streptococcus maternal vaccination trials, we describe a protocol for a pregnancy register at Kawempe National Referral Hospital, Kampala, Uganda to describe pregnancy maternal and infant outcomes. Methods: The study has two components. Firstly, an active, prospective surveillance cohort consisting of pregnant women in their first or second trimester recruited and followed up through their hospital scheduled antenatal visits, delivery and their infants through their extended programme of immunisation visits until 14 weeks of age. Data on obstetric and neonatal outcomes defined by the Brighton Collaboration Global Alliance of Immunisation Safety Assessment in Pregnancy criteria will be collected. Secondly, a passive surveillance cohort collecting data through routine electronic health records on all women and infants attending care at KNRH.  Data will be collected on vaccinations and medications including antiretroviral therapy received in antenatal clinic and prior to hospital discharge. Discussion:  Conducting vaccine research in resource-limited settings is essential for equity and to answer priority safety questions specific to these settings. It requires improved vaccine safety monitoring, which is especially pertinent in maternal vaccine research. During a trial, understanding the epidemiology and background rates of adverse events in the study population is essential to establish thresholds which indicate a safety signal. These data need to be systematically and reliably collected. This study will describe rates of adverse pregnancy outcomes in a cohort of 4,000 women and infants and any associated medications or vaccines received at a new vaccine trial site in Uganda.

Usefulness of second trimester left ventricular global longitudinal strain for predicting adverse maternal outcome in pregnant women aged 35 years or older

The present study was primarily designed to accurately determine biventricular and biatrial myocardial function, assessed by two-dimensional speckle tracking echocardiography (2D-STE), in a prospective cohort of pregnant women aged ≥ 35 years, at the second trimester of pregnancy. Secondly, we aimed at investigating the main independent predictors of adverse maternal outcome (AMO) in the same study population. 80 consecutive pregnant women aged ≥ 35 years, 80 gestational week-matched (18.4 ± 1.6 vs 18.5 ± 1.8 weeks, p = 0.71) pregnant women aged < 35 years and 80 non-pregnant women aged ≥ 35 years without any comorbidity were included in this prospective study. All pregnant women underwent obstetric evaluation, modified Haller index (MHI) assessment and a conventional two-dimensional transthoracic echocardiography implemented with complete 2D-STE analysis of both ventricles and atria at the second trimester of pregnancy. AMO was defined as the occurrence of any of the following: gestational hypertension (GH) including preeclampsia; gestational diabetes mellitus (GDM); preterm delivery (PD); emergency caesarean section (ECS); postpartum haemorrhage (PPH); premature rupture of membranes (PROM); maternal death. Compared to younger pregnant women, pregnant women aged ≥ 35 years were more likely to be found with: (1) body mass index (BMI) ≥ 30 kg/m2 (37.5% of total); (2) significantly increased inflammatory markers; (3) significantly greater left ventricular mass index; (4) significantly impaired hemodynamics; (5) significantly reduced bi-atrial and bi-ventricular myocardial strain parameters, despite normal ejection fraction. A strong inverse correlation between second trimester BMI and left ventricular (LV)-global longitudinal strain (GLS) (r =  - 0.84) and between second trimester MHI and LV-GLS (r =  - 0.81) was demonstrated in pregnant women aged ≥ 35 years. GH, GDM, PD, ECS, PPH and PROM were detected in 15%, 12.5%, 10%, 8.7%, 8.7% and 7.5% of women, respectively. Age (OR 2.04, 95% CI 1.46-2.84), second trimester BMI (OR 2.40, 95% CI 1.64-3.51) and second trimester LV-GLS (OR 0.07, 95%C I 0.01-0.34) were independently associated with outcome. Age ≥ 37 years, BMI ≥ 30 kg/m2 and LV-GLS less negative than - 18% were the best cut-off values for predicting AMO. A LV-GLS less negative than - 18% allows to identify, among older pregnant women, those with an increased risk of AMO. Both intrinsic myocardial dysfunction and extrinsic compressive mechanical phenomena might affect global myocardial deformation during gestation.

Maternal mortality trends in Spain during the 2000-2018 period: the role of maternal origin

Background

The available literature indicates that there are significant differences in maternal mortality according to maternal origin in high income countries. The aim of this study was to examine the trend in the maternal mortality rate and its most common causes in Spain in recent years and to analyse its relationship with maternal origin.

Methods

This was a cross-sectional study of all live births as well as those resulting in maternal death in Spain during the period between 2000 and 2018. A descriptive analysis of the maternal mortality rate by cause, region of birth, maternal age, marital status, human development index and continent of maternal origin was performed. The risk of maternal death was calculated using univariate and multivariate logistic regression analyses, with adjustment for certain variables included in the descriptive analysis.

Results

There was a total of 293 maternal deaths and 8,439,324 live births during the study period. The most common cause of maternal death was hypertensive disorders of pregnancy. The average maternal death rate was 3.47 per 100,000 live births. The risk of suffering from this complication was higher for immigrant women from less developed countries. The adjusted effect of maternal HDI score over maternal mortality was OR = 0.976; 95% CI 0.95 – 0.99; p = 0.048; therefore, a decrease of 0.01 in the maternal human development index score significantly increased the risk of this complication by 2.4%.

Conclusions

The results of this study indicate that there are inequalities in maternal mortality according to maternal origin in Spain. The human development index of the country of maternal origin could be a useful tool when estimating the risk of this complication, taking into account the origin of the pregnant woman.

Exploring health provider's knowledge on the home-based maternal and neonatal health care package in Rwanda

BACKGROUND

Rwanda implemented post-natal care home visits by maternal community health workers (M-CHWs) in charge of maternal and newborn health care in 2010 as a component of a home-based maternal and neonatal health care package (HB-MNHCP), this being a complementary strategy to facility-based postnatal care to improve survival. The country has not met its Sustainable Development Goal (SDG) 3 target of less than 70 maternal mortalities per 100,000 live births and less than 12 neonatal deaths per 1,000 live births. This study therefore aimed to establish the knowledge of the health providers, providing HB-MNHC services as part of their antenatal, delivery and postnatal care program, specifically the M-CHWs services.

METHODS

The cross-sectional descriptive study included 79 purposively sampled health care providers who were directly involved in the various components of the HB-MNHCP, namely: professional nurses, midwives, M-CHW, social workers, supervisors and data managers. The Kibogora, Muhima and Nyamata District Hospitals and two rural, semi-urban and urban health facility were included. Data was collected using questionnaires from April to July 2018. This study followed the STROBE checklist form: Cross -sectional studies.

RESULTS

Overall, 88.6% (n=70/79) of participants knew about the M-CHW three home visits scheduled during pregnancy, 73.4% (n=58/79) about the three postnatal home visits after birth when the weight was normal, and 64.6% (n=51/79) about the five PNC home visits for low birth weights. Most (97.5%, n=77/79) knew that the mother and newborn should be screened during the same M-CHW home visits, and 87.2% (n= 68/79) were aware of the seven postnatal core competencies of delivering key maternal and newborn interventions during PNC home visits.

CONCLUSIONS

There were varying levels of knowledge among the HB-MNHCP staff, indicating the need for ongoing monitoring and training to ensure that the correct information is provided to the mothers throughout the antenatal and postnatal periods. While most of the M-CHWs appear to have had the correct knowledge, their executing of some activities needs to be monitored to ensure that they provide the required services, as this is an important step in lowering the maternal and infant mortality and enabling Rwanda to meet its SDG 3. Home visits by the M-CHWs could increase referrals and reduce maternal and newborn mortality.

Disparities in pregnancy-related deaths: spatial and Bayesian network analyses of maternal mortality ratio in 54 African countries

BACKGROUND

Maternal mortality remains a public health problem despite several global efforts. Globally, about 830 women die of pregnancy-related death per day, with more than two-third of these cases occurring in Africa. We examined the spatial distribution of maternal mortality in Africa and explored the influence of SDoH on the spatial distribution.

METHODS

We used country-level secondary data of 54 African countries collected between 2006 and 2018 from three databases namely, World Development Indicator, WHO's Global Health Observatory Data and Human Development Report. We performed descriptive analyses, presented in tables and maps. The spatial analysis involved local indicator of spatial autocorrelation maps and spatial regression. Finally, we built Bayesian networks to determine and show the strength of social determinants associated with maternal mortality.

RESULTS

We found that the average prevalence of maternal mortality ratio (MMR) in Africa was 415 per 100 000 live births. Findings from the spatial analyses showed clusters (hotspots) of MMR with seven countries (Guinea-Bissau, Guinea, Sierra Leone, Cote d'Ivoire, Chad and Cameroon, Mauritania), all within the Middle and West Africa. On the other hand, the cold spot clusters were formed by two countries; South Africa and Namibia; eight countries (Algeria, Tunisia, Libya, Ghana, Gabon and Congo, Equatorial Guinea and Cape Verde) formed low-high clusters; thus, indicating that these countries have significantly low MMR but within the neighbourhood of countries with significantly high MMR. The findings from the regression and Bayesian network analysis showed that gender inequities and the proportion of skilled birth attendant are strongest social determinants that drive the variations in maternal mortality across Africa.

CONCLUSION

Maternal mortality is very high in Africa especially in countries in the middle and western African subregions. To achieve the target 3.1 of the sustainable development goal on maternal health, there is a need to design effective strategies that will address gender inequalities and the shortage of health professionals.

Association Between Mass Media Use and Maternal Healthcare Service Utilisation in Malawi

Introduction

Using data from Malawi Demographic and Health Survey (2015–16), in the present study, we aimed to assess the role of exposure to family planning information through various mass media on the utilization of maternal healthcare services.

Methods

The sample population included 13,217 women aged 15–49 years with a history of at least one childbirth. Outcome measures included essential maternal healthcare services such as early and adequate use of antenatal care, skilled delivery service. Multivariate logistic regression models were used to find the association between maternal healthcare services and exposure to family planning messages by controlling for sociodemographic characteristics.

Results

Women who reported receiving family planning message through internet [odds ratio=1.48, 95% CI=1.15, 1.91], radio [odds ratio=1.15, 95% CI=1.05, 1.26], TV [odds ratio=1.53, 95% CI=1.32, 1.76] and mobile phone [odds ratio=1.23, 95% CI=1.02, 1.48] had higher odds of having timely ANC care. For using adequate number of ANC, the associations were significant for TV [odds ratio=1.41, 1.23, 1.62] and mobile phone [odds ratio=1.20, 95% CI=1.01, 1.43] only. For the use of facility delivery, a strong association was observed for poster [odds ratio=1.43, 95% CI=1.12, 1.82] and TV [odds ratio=2.99, 95% CI=1.78, 5.03]. The odds of using all three services varied noticeably between urban and rural areas, eg, receiving family planning messages through internet increased the odds of antenatal care and facility delivery services in the urban areas only, whereas that from poster was associated only for facility delivery and only in the rural areas.

Conclusion

The findings indicate a positive association on media communication regarding family planning on the uptake of maternal healthcare services.

Assessing feasibility of resources at health facilities in Uganda to diagnose pregnancy and neonatal outcomes

BACKGROUND

Standardized case definitions for obstetric and neonatal outcomes were developed by the Global Alignment of Immunization Safety Assessment in Pregnancy (GAIA) project. These definitions can facilitate comparable assessment of maternal immunization safety surveillance and research. This study assessed the capabilities of health centers (HC) in Uganda to implement these definitions in a low income country, which has not been explored.

METHODS

Healthcare practitioners at 15 government-accredited health centers and one government-funded district hospital in the Iganga-Mayuge Health and Demographic Surveillance Site (IMHDSS) in Uganda were interviewed about the facility's clinical diagnostic and laboratory capabilities. Five obstetric and five neonatal case definitions were evaluated. Definitions with the highest diagnostic certainty were designated as level 1, while definitions that decreased in certainty were designated as level 2 or 4. HCs were evaluated on diagnostic and laboratory capabilities to apply the GAIA definitions.

RESULTS

Higher-level facilities in the IMHDSS demonstrated the ability to diagnose more specific levels of the GAIA obstetric and neonatal outcomes than lower-level facilities. Furthermore, for the neonatal outcome assessment, there was an increased ability to diagnose outcomes moving from GAIA level 1 to level 3.

CONCLUSIONS

The ability of health centers to implement globally standardized definitions is promising for implementation of standardized data collection methods for global vaccine safety surveillance and research.

Global alignment of immunization safety assessment in pregnancy - The GAIA project

Immunization in pregnancy provides a promising contribution to globally reducing neonatal and under-five childhood mortality and morbidity. Thorough assessment of benefits and risks for the primarily healthy pregnant women and their unborn babies is required. The GAIA project was formed in response to the call of the World Health Organization for a globally concerted approach to actively monitor the safety of vaccines and immunization in pregnancy programs. GAIA aims to improve the quality of outcome data from clinical vaccine trials in pregnant women with a specific focus on the needs and requirements for safety monitoring in LMIC. In the first year of the project, a large and functional network of experts was created. The first outputs include a guidance document for clinical trials of immunization in pregnancy, a basic data collection guide, ten case definitions of key obstetric and neonatal health outcomes, an ontology of key terms and a map of pertinent disease codes. The GAIA Network is designed as an open and growing forum for professionals sharing the GAIA vision and aim. Based on the initial achievements, tools and services are developed to support investigators and strengthen immunization in pregnancy programs with specific focus on LMIC.