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The Journal of Obstetrics and... May 2022The International Classification of Diseases for Perinatal Mortality (ICD-PM) is a system for recording causes of perinatal death. In this system, placental pathology is...
Classification of stillbirth by the International Classification of Diseases for Perinatal Mortality using a sequential approach: A 20-year retrospective study from Thailand.
AIM
The International Classification of Diseases for Perinatal Mortality (ICD-PM) is a system for recording causes of perinatal death. In this system, placental pathology is considered a "maternal condition" and this category does not cover the spectrum of placental pathology that can impact on perinatal death. The aim of the study was to apply a wider spectrum of placental pathology as a separate parameter for classifying death in the ICD-PM.
METHODS
All autopsy reports at a single institution over a 20-year period (2001-2020) were reviewed. Causes of stillbirth were analyzed in a sequential manner: step 1, clinical history and laboratory results; step 2, placenta; and step 3, autopsy; and classified at each step according to the ICD-PM.
RESULTS
The review identified 330 cases, including 126 antepartum and 204 intrapartum deaths. Step 1 identified a cause in 176 (86%) intrapartum deaths and 64 (51%) antepartum deaths. The addition of placental pathology (step 2) changed the cause of death in 12% of cases, with causes now identified in 190 (93%) intrapartum and 89 (71%) antepartum deaths. Adding step 3 did not identify any additional causes of death.
CONCLUSION
The accuracy of the ICD-PM classification is dependent on the data available. Placental pathology made a significant difference in assigning causes of death in our series, stressing the importance of placental examination. Determination of the cause of death based on clinical history and laboratory data alone may be inaccurate, and less useful for comparative studies and planning prenatal care.
Topics: Female; Humans; Pregnancy; Cause of Death; International Classification of Diseases; Perinatal Death; Perinatal Mortality; Placenta; Retrospective Studies; Stillbirth; Thailand; Infant, Newborn
PubMed: 35178832
DOI: 10.1111/jog.15189 -
European Journal of Obstetrics,... Mar 2021The primary objective was the identification of sub-standard care in antepartum stillbirths in Emilia-Romagna Region (Italy), hence the number of potentially preventable...
OBJECTIVES
The primary objective was the identification of sub-standard care in antepartum stillbirths in Emilia-Romagna Region (Italy), hence the number of potentially preventable cases. Secondly, we seek to evaluate any association between inadequate care and either risk factors for stillbirth or causes of death.
STUDY DESIGN
This study was based on prospectively-collected data in an institutional stillbirth audit project, involving all 29 hospital with a maternity unit in Emilia-Romagna Region. For each stillbirth occurred in the area from 2014 to the first semester of 2019 the same diagnostic workup was performed and a clinical record with data about mother and stillborn was completed. Every case was discussed in a multidisciplinary local audit to assess both the cause of death and the quality of care. Two aspects of care quality were evaluated: clinical management and women's access to care. Data were then reviewed by the Regional Audit Group.
RESULTS
Elements of inadequate care were identified in 56 out of 524 (10.7 %) fetal deaths. Non-Italian women and pregnancies with fetal growth restriction had double the risk of having received inadequate care during pregnancy, compared to Italian women (aOR 2.0, 95 % CI 1.1-3.6) and a normally developing fetus (aOR 2.0, 95 % CI 1.1-4.1), respectively. Women whose stillbirth was caused by maternal disorders were at higher risk for inadequate care compared to women who had stillbirth explained by other cause (aOR 5.89, 95 %CI 2.2-15.4). Sub-optimal clinical management and barriers to access to care were observed to equal extents. Inappropriate ultrasound monitoring was the most frequent suboptimal care element.
CONCLUSIONS
About one out of ten stillbirths was potentially preventable. Interventions to reduce stillbirth occurrence in our high-resource setting should focus on appropriate diagnosis and management of maternal disorders and fetal growth restriction, as well as improving access to antenatal care.
Topics: Female; Fetal Death; Fetal Growth Retardation; Humans; Italy; Pregnancy; Prenatal Care; Risk Factors; Stillbirth
PubMed: 33476925
DOI: 10.1016/j.ejogrb.2021.01.006 -
Obstetrics and Gynecology International 2021Birth of a fetus with no signs of life after a predefined age of viability is a nightmare for the obstetrician. Stillbirth is a sensitive indicator of maternal care...
BACKGROUND
Birth of a fetus with no signs of life after a predefined age of viability is a nightmare for the obstetrician. Stillbirth is a sensitive indicator of maternal care during the antepartum and intrapartum period. Though there has been a renewed global focus on stillbirth as a public health concern, the decline in stillbirth rate (SBR) has not been satisfactory across the nations, with a large number of stillbirths occurring in the low- to middle-income countries (LMICs). Hence, the study was carried out to analyze maternal and fetal risk factors and their association with stillbirths in a tertiary care center in South India.
METHODS
This observational prospective study included pregnant women with stillbirth beyond 20 weeks of gestation or fetal weight more than 500 grams. Stillbirths were classified according to the simplified causes of death and associated conditions (CODAC) classification. Association between the risk factor and stillbirths was calculated with chi-square test and odds ratio with 95% confidence interval.
RESULTS
There were 171 stillbirths (2.97%) among total 5755 births. The SBR was 29.71/1000 births. Risk factors such as preterm delivery (OR: 22.33, 95% CI: 15.35-32.50), anemia (OR: 21.87, 95% CI: 15.69-30.48), congenital malformation (OR: 11.24, 95% CI: 6.99-18.06), abruption (OR: 10.14, 95% CI: 6.43-15.97), oligohydramnios (OR: 4.88, 95% CI: 3.23-7.39), and hypertensive disorder (OR: 3.01, 95% CI: 2.03-4.46) were significantly associated with stillbirths. The proportion of intrapartum stillbirths was found to be 5 (3%) among the study population.
CONCLUSION
Highest prevalent risk factors associated with stillbirth are anemia and prematurity. Intrapartum stillbirths can be reduced significantly through evidence-based clinical interventions and practices in resource-poor settings. There is a need to provide and assure access to specialized quality antenatal care to pregnant women to control the risk factors associated with stillbirths.
PubMed: 34335785
DOI: 10.1155/2021/8033248 -
Clinical Endocrinology Sep 2022Large population-based studies on maternal hyperthyroidism's effect on antepartum, intrapartum, and neonatal complications are few. Most of these studies were small or...
OBJECTIVE
Large population-based studies on maternal hyperthyroidism's effect on antepartum, intrapartum, and neonatal complications are few. Most of these studies were small or did not evaluate a broad scope of possible complications. Therefore, a large population-based cohort study was conducted to study the associations between maternal hyperthyroidism and pregnancy and perinatal complications.
DESIGN
This is a retrospective population-based cohort study utilizing data from the Healthcare Cost and Utilization Project-Nationwide Inpatient Sample over 11 years from 2004 to 2014.
PATIENTS
16,984 deliveries to women with hyperthyroidism and 9,079,804 deliveries to mothers who did not suffer of hyperthyroidism.
METHODS
A cohort of all deliveries between 2004 and 2014 inclusively was created. Within this group, all deliveries to women with hyperthyroidism were the study group (n = 16,984) and the remaining deliveries were categorized as nonhyperthyroidism births and comprised the reference group (n = 9,079,804). The main outcome measures were pregnancy and perinatal complications.
RESULTS
Maternal hyperthyroidism was associated with several pregnancy and perinatal complications, including increased risks of gestational hypertension (adjusted odds ratio [aOR]: 1.236, 95% confidence interval [CI]: 1.045-1.462, p = .013) and preeclampsia (aOR: 1.190, 95% CI: 1.006-1.408, p = .042). These patients are more likely to experience preterm premature rupture of membranes (aOR: 1.322, 95% CI: 1.007-1.735, p = .044), preterm delivery (aOR: 1.287 95% CI: 1.132-1.465, p < .001), placental previa (aOR: 1.527, 95% CI: 1.082-2.155, p = .016), and suffer from venous thromboembolism (aOR: 2.894, 95% CI: 1.293-6.475, p = .010). As for neonatal outcomes, small for gestational age and stillbirth were more likely to occur in the offspring of women with hyperthyroidism (aOR: 1.688, 95% CI: 1.437-1.984, p < .001 and aOR: 1.647, 95% CI: 1.109-2.447, p = .013, respectively).
CONCLUSIONS
Women with hyperthyroidism are more likely to experience pregnancy, delivery, and neonatal complications. We found an association between hyperthyroidism and hypertensive disorders, preterm delivery, and intrauterine fetal death.
Topics: Cohort Studies; Female; Humans; Hyperthyroidism; Infant, Newborn; Placenta; Pregnancy; Pregnancy Complications; Pregnancy Outcome; Premature Birth; Retrospective Studies; Stillbirth
PubMed: 35261044
DOI: 10.1111/cen.14713 -
Global Health Action Dec 2020Suriname has one of the highest stillbirth rates in Latin America and the Caribbean. To facilitate data comparison of perinatal deaths, the World Health Organization...
BACKGROUND
Suriname has one of the highest stillbirth rates in Latin America and the Caribbean. To facilitate data comparison of perinatal deaths, the World Health Organization developed the International Classification of Diseases-10 Perinatal Mortality (ICD-PM).
OBJECTIVE
We aimed to (1) assess characteristics and risk indicators of women with a stillbirth, (2) determine the timing and causes of stillbirths according to the ICD-PM with critical evaluation of its application and (3) propose recommendations for the reduction of stillbirths in Suriname.
METHODS
A hospital-based, nation-wide, cross-sectional study was conducted in all hospitals within Suriname during one-year (2017). The medical files of stillbirths (gestation ≥28 weeks/birth weight ≥1000 grams) were reviewed and classified using ICD-PM. We used descriptive statistics and multiple logistic regression analyses.
RESULTS
The stillbirth rate in Suriname was 14.4/1000 births (n=131 stillbirths, n=9089 total births). Medical files were available for 86% (n=113/131) of stillbirths. Women of African descent had the highest stillbirth rate and two times the odds of stillbirth (OR 2.1, 95%CI 1.4-3.1) compared to women of other ethnicities. One third (33%, n=37/113) of stillbirths occurred after hospital admission. The timing was antepartum in 85% (n=96/113), intrapartum in 11% (n=12/113) and unknown in 4% (n=5/113). Antepartum stillbirths were caused by in 46% (n=44/96). In 41% (n=39/96) the cause was unspecified. were present in 50% (n=57/113), mostly hypertensive disorders.
CONCLUSION
Stillbirth reduction strategies in Suriname call for targeting ethnic disparities, improving antenatal services, implementing perinatal death audits and improving diagnostic post-mortem investigations. ICD-PM limited the formulation of recommendations due to many stillbirths of 'unspecified' causes. Based on our study findings, we also recommend addressing some challenges with applying the ICD-PM.
ABBREVIATIONS
CTG: Cardiotocography; ENAP: Every Newborn Action Plan (ENAP); ICD-PM: The WHO application of ICD-10 to deaths during the perinatal period - perinatal mortality; SBR: Stillbirth rate; SGA: Small for gestational age; WHO: World Health Organization; LMIC: Low- and middle-income countries; FHR: foetal heart rate.
Topics: Adult; Caribbean Region; Cause of Death; Cross-Sectional Studies; Female; Hospitals; Humans; Infant, Newborn; International Classification of Diseases; Parturition; Perinatal Death; Perinatal Mortality; Pregnancy; Risk Factors; Stillbirth; Suriname; World Health Organization
PubMed: 32777997
DOI: 10.1080/16549716.2020.1794105 -
Women and Birth : Journal of the... Feb 2024Reducing preventable perinatal deaths is the focus of perinatal death surveillance and response programmes. Standardised review tools can help identify modifiable... (Review)
Review
INTRODUCTION
Reducing preventable perinatal deaths is the focus of perinatal death surveillance and response programmes. Standardised review tools can help identify modifiable factors in perinatal deaths.
AIM
This systematic review aimed to identify, compare, and appraise perinatal mortality review tools (PMRTs) in upper-middle to high-income countries.
METHODS
Four major scientific databases were searched for publications relating to perinatal death reviews. There were no restrictions on date, study, or publication type. Professional websites for each country were searched for relevant material. The Appraisal of Guidelines Research and Evaluation Health Systems (AGREE-HS) checklist was used for quality appraisal of each tool. A narrative synthesis was used to describe and compare tools.
FINDINGS
Ten PMRTs were included. Five PMRTs were from high-income countries, four from upper-middle income countries and one was designed for use in a global context. The structure, content, and quality of each PMRT varied. Each tool collected information about the antepartum, intrapartum, and neonatal periods and a section to classify perinatal deaths using a standardised classification system. All tools reviewed the care provided. Five tools included recommendation development for changes to clinical care. Four tools mentioned parent involvement in the review process. For quality appraisal, one review tool scored "high quality", six scored "moderate quality" and two scored "poor quality".
CONCLUSION
There is little standardisation when it comes to PMRTs. Guidance on structuring PMRTs in a standardised way is needed. Recommendation development from a review is important to highlight changes to care required to reduce preventable perinatal deaths.
Topics: Female; Humans; Infant, Newborn; Pregnancy; Parturition; Perinatal Death; Perinatal Mortality; Stillbirth; Software
PubMed: 37793961
DOI: 10.1016/j.wombi.2023.09.006 -
Pediatric and Developmental Pathology :... 2021The incidence of umbilical cord or placental parenchyma abnormalities associated with mortality or morbidity of term infants is lacking.
BACKGROUND
The incidence of umbilical cord or placental parenchyma abnormalities associated with mortality or morbidity of term infants is lacking.
METHODS
Placentas of 55 antepartum stillbirths (APD), 21 intrapartum stillbirths (IPD), 12 neonatal deaths (ND), and 80 admissions to a level 3 neonatal intensive care unit (NS) were studied and compared with 439 placentas from neonates from normal term pregnancies and normal outcome after vaginal delivery (NPVD) and with 105 placentas after an elective caesarian sections (NPEC).
RESULTS
NPVD and NPEC placentas showed no or one abnormality in 70% and placentas from stillbirth showed two or more abnormalities in 80% of cases. APD placentas more frequently had a low weight and less formation of terminal villi. Hypercoiling was more often present in all study groups. Severe chronic villitis was almost exclusively present in APD placentas. Chorioamnionitis was significantly more frequent in APD, IPD and NS placentas and funisitis was more often observed in IPD and NS placentas.
CONCLUSION
Multiple placental abnormalities are significantly more frequent in placentas from term neonates with severe perinatal morbidity and mortality. These placental abnormalities are thought to be associated with disturbed oxygen transfer or with inflammation.
Topics: Case-Control Studies; Female; Humans; Incidence; Infant, Newborn; Logistic Models; Male; Netherlands; Odds Ratio; Perinatal Death; Placenta; Placenta Diseases; Pregnancy; Prognosis; Prospective Studies; Stillbirth; Term Birth
PubMed: 33470918
DOI: 10.1177/1093526620980608 -
BJOG : An International Journal of... Jul 2024To investigate the risk of stillbirth in relation to (1) a previous caesarean delivery (CD) compared with those following a vaginal birth (VB); and (2) vaginal birth...
OBJECTIVES
To investigate the risk of stillbirth in relation to (1) a previous caesarean delivery (CD) compared with those following a vaginal birth (VB); and (2) vaginal birth after caesarean (VBAC) compared with a repeat CD.
DESIGN
Population-based cohort study.
SETTING
The Swedish Medical Birth registry.
POPULATION
Women with their first and second singletons between 1982 and 2012.
METHODS
Multivariable logistic regression models were performed to estimate adjusted odds ratios (aOR) and 95% confidence intervals (CI) of the association between CD in the first pregnancy and stillbirth in the second pregnancy and the association between VBAC and stillbirth. Sub-group analyses were performed by types of CD and timing of stillbirth (antepartum and intrapartum).
MAIN OUTCOME MEASURES
Stillbirth (antepartum and intrapartum fetal death).
RESULTS
Of the 1 771 700 singleton births from 885 850 women, 117 114 (13.2%) women had a CD in the first pregnancy, and 51 755 had VBAC in the second pregnancy. We found a 37% increased odds of stillbirth (aOR 1.37; 95% CI 1.23-1.52) in women with a previous CD compared with VB. The odds of intrapartum stillbirth were higher in the previous pre-labour CD group (aOR 2.72; 95% CI 1.51-4.91) and in the previous in-labour CD group (aOR 1.35; 95% CI 0.76-2.40), although not statistically significant in the latter case. No increased odds were found for intrapartum stillbirth in women who had VBAC (aOR 0.99; 95% CI 0.48-2.06) compared with women who had a repeat CD.
CONCLUSIONS
This study confirms that a CD is associated with an increased risk of subsequent stillbirth, with a greater risk among pre-labour CD. This association is not solely mediated by increases in intrapartum asphyxia, uterine rupture or attempted VBAC. Further research is needed to understand this association, but these findings might help healthcare providers to reach optimal decisions regarding mode of birth, particularly when CD is unnecessary.
Topics: Humans; Female; Stillbirth; Pregnancy; Sweden; Adult; Vaginal Birth after Cesarean; Risk Factors; Cohort Studies; Cesarean Section; Registries; Logistic Models; Odds Ratio; Young Adult
PubMed: 38287170
DOI: 10.1111/1471-0528.17760 -
PloS One 2023Ethiopia is one of the countries facing a very high burden of perinatal death in the world. Despite taking several measures to reduce the burden of stillbirth, the pace...
INTRODUCTION
Ethiopia is one of the countries facing a very high burden of perinatal death in the world. Despite taking several measures to reduce the burden of stillbirth, the pace of decline was not that satisfactory. Although limited perinatal mortality studies were conducted at a national level, none of the studies stressed the timing of perinatal death. Thus, this study is aimed at determining the magnitude and risk factors that are associated with the timing of perinatal death in Ethiopia.
METHODS
National perinatal death surveillance data were used in the study. A total of 3814 reviewed perinatal deaths were included in the study. Multilevel multinomial analysis was employed to examine factors associated with the timing of perinatal death in Ethiopia. The final model was reported through the adjusted relative risk ratio with its 95% Confidence Interval, and variables with a p-value less than 0.05 were declared statistically significant predictors of the timing of perinatal death. Finally, a multi-group analysis was carried out to observe inter-regional variation among selected predictors.
RESULT
Among the reviewed perinatal deaths, 62.8% occurred during the neonatal period followed by intrapartum stillbirth, unknown time of stillbirth, and antepartum stillbirth, each contributing 17.5%,14.3%, and 5.4% of perinatal deaths, respectively. Maternal age, place of delivery, maternal health condition, antennal visit, maternal education, cause of death (infection and congenital and chromosomal abnormalities), and delay to decide to seek care were individual-level factors significantly associated with the timing of perinatal death. While delay reaching a health facility, delay to receive optimal care health facility, type of health facility and type region were provincial-level factors correlated with the timing of perinatal death. A statistically significant inter-regional variation was observed due to infection and congenital anomalies in determining the timing of perinatal death.
CONCLUSION
Six out of ten perinatal deaths occurred during the neonatal period, and the timing of perinatal death was determined by neonatal, maternal, and facility factors. As a way forward, a concerted effort is needed to improve the community awareness of institutional delivery and ANC visit. Moreover, strengthening the facility level readiness in availing quality service through all paths of the continuum of care with special attention to the lower-level facilities and selected poor-performing regions is mandatory.
Topics: Infant, Newborn; Female; Pregnancy; Humans; Perinatal Death; Stillbirth; Ethiopia; Causality; Risk Factors
PubMed: 37159458
DOI: 10.1371/journal.pone.0285465 -
PLoS Medicine Jun 2021Maternal morbidity occurs several times more frequently than mortality, yet data on morbidity burden and its effect on maternal, foetal, and newborn outcomes are limited...
Direct maternal morbidity and the risk of pregnancy-related deaths, stillbirths, and neonatal deaths in South Asia and sub-Saharan Africa: A population-based prospective cohort study in 8 countries.
BACKGROUND
Maternal morbidity occurs several times more frequently than mortality, yet data on morbidity burden and its effect on maternal, foetal, and newborn outcomes are limited in low- and middle-income countries. We aimed to generate prospective, reliable population-based data on the burden of major direct maternal morbidities in the antenatal, intrapartum, and postnatal periods and its association with maternal, foetal, and neonatal death in South Asia and sub-Saharan Africa.
METHODS AND FINDINGS
This is a prospective cohort study, conducted in 9 research sites in 8 countries of South Asia and sub-Saharan Africa. We conducted population-based surveillance of women of reproductive age (15 to 49 years) to identify pregnancies. Pregnant women who gave consent were include in the study and followed up to birth and 42 days postpartum from 2012 to 2015. We used standard operating procedures, data collection tools, and training to harmonise study implementation across sites. Three home visits during pregnancy and 2 home visits after birth were conducted to collect maternal morbidity information and maternal, foetal, and newborn outcomes. We measured blood pressure and proteinuria to define hypertensive disorders of pregnancy and woman's self-report to identify obstetric haemorrhage, pregnancy-related infection, and prolonged or obstructed labour. Enrolled women whose pregnancy lasted at least 28 weeks or those who died during pregnancy were included in the analysis. We used meta-analysis to combine site-specific estimates of burden, and regression analysis combining all data from all sites to examine associations between the maternal morbidities and adverse outcomes. Among approximately 735,000 women of reproductive age in the study population, and 133,238 pregnancies during the study period, only 1.6% refused consent. Of these, 114,927 pregnancies had morbidity data collected at least once in both antenatal and in postnatal period, and 114,050 of them were included in the analysis. Overall, 32.7% of included pregnancies had at least one major direct maternal morbidity; South Asia had almost double the burden compared to sub-Saharan Africa (43.9%, 95% CI 27.8% to 60.0% in South Asia; 23.7%, 95% CI 19.8% to 27.6% in sub-Saharan Africa). Antepartum haemorrhage was reported in 2.2% (95% CI 1.5% to 2.9%) pregnancies and severe postpartum in 1.7% (95% CI 1.2% to 2.2%) pregnancies. Preeclampsia or eclampsia was reported in 1.4% (95% CI 0.9% to 2.0%) pregnancies, and gestational hypertension alone was reported in 7.4% (95% CI 4.6% to 10.1%) pregnancies. Prolonged or obstructed labour was reported in about 11.1% (95% CI 5.4% to 16.8%) pregnancies. Clinical features of late third trimester antepartum infection were present in 9.1% (95% CI 5.6% to 12.6%) pregnancies and those of postpartum infection in 8.6% (95% CI 4.4% to 12.8%) pregnancies. There were 187 pregnancy-related deaths per 100,000 births, 27 stillbirths per 1,000 births, and 28 neonatal deaths per 1,000 live births with variation by country and region. Direct maternal morbidities were associated with each of these outcomes.
CONCLUSIONS
Our findings imply that health programmes in sub-Saharan Africa and South Asia must intensify their efforts to identify and treat maternal morbidities, which affected about one-third of all pregnancies and to prevent associated maternal and neonatal deaths and stillbirths.
TRIAL REGISTRATION
The study is not a clinical trial.
Topics: Adolescent; Adult; Female; Humans; Infant; Infant, Newborn; Pregnancy; Young Adult; Africa South of the Sahara; Asia; Infant Mortality; Maternal Mortality; Pregnancy Complications; Pregnancy Outcome; Prospective Studies; Risk Assessment; Risk Factors; Stillbirth; Network Meta-Analysis
PubMed: 34181649
DOI: 10.1371/journal.pmed.1003644