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BJOG : An International Journal of... Oct 2021To evaluate the recurrence risk of stillbirth.
OBJECTIVES
To evaluate the recurrence risk of stillbirth.
DESIGN
Retrospective cohort study.
SETTING AND POPULATION
All births 1992-2017, Alberta, Canada.
METHODS
Retrospective cohort study.
MAIN OUTCOME MEASURES
Stillbirth was defined as the death in utero of a fetus with gestational age ≥20 weeks or weighing ≥500 g. Stillbirths were further subdivided into those occurring before labour and those in labour.
RESULTS
We identified 744 897 births from 308 478 women. Of these, 3698 women experienced a stillbirth and, of these, 97.7%, experienced only one. For women with a small-for-gestational- age stillbirth in the first birth, their risk of a subsequent antepartum stillbirth was increased substantially: 4.09%, relative risk (RR) 10.39, 95% CI 5.81-18.59. For women with a first birth appropriate-for-gestational-age stillbirth with no risk factors such as pregnancy induced hypertension, the risk with pre-existing diabetes mellitus or hypertension was also increased but to a much lesser degree (RR 2.46, 95% CI 1.23-4.91). For women who had experienced a first birth intrapartum stillbirth, the risk of another intrapartum stillbirth was very high (3.59%, RR 36.50, 95% CI 20.17-66.05). Most of these births also occurred prior to 24 weeks' gestation: 83% (10/12).
CONCLUSIONS
The risk of recurrent antepartum stillbirth is low. The increase in risk in instances where the antepartum stillbirth was not growth-restricted is not clinically meaningful. Given the very low risk in any given gestational week, fetal surveillance is unlikely to be effective and may lead to unnecessary interventions. Intrapartum stillbirth has a very high recurrence risk but may not be preventable.
TWEETABLE ABSTRACT
Stillbirth recurrence is rare.
Topics: Adult; Alberta; Female; Fetal Death; Gestational Age; Humans; Infant, Newborn; Infant, Small for Gestational Age; Pregnancy; Prenatal Care; Recurrence; Retrospective Studies; Risk Assessment; Risk Factors; Stillbirth
PubMed: 33837600
DOI: 10.1111/1471-0528.16718 -
BMC Women's Health Sep 2021Abortion and stillbirths are the common obstetrics condition in Ethiopia and their effect on the next pregnancy was not well identified in resource limited settings. The...
BACKGROUND
Abortion and stillbirths are the common obstetrics condition in Ethiopia and their effect on the next pregnancy was not well identified in resource limited settings. The aim of the study was to assess the effect of stillbirth and abortion on the next pregnancy.
METHODS
A prospective cohort study design was implemented. The study was conducted in Mecha demographic surveillance and field research center catchment areas. The data were collected from January 2015 to March 2019. Epi-info software was used to calculate the sample size. The systematic random sampling technique was used to select stillbirth and abortion women. Poison regression was used to identify the predictors of MCH service utilization; descriptive statistics were used to identify the prevalence of blood borne pathogens. The Kaplan Meier survival curve was used to estimate survival to pregnancy and pregnancy related medical disorders.
RESULTS
1091 stillbirth and 3,026 abortion women were followed. Hepatitis B was present in 6% of abortion and 3.2% of stillbirth women. Hepatitis C was diagnosed in 4.7% of abortion and 0.3% of stillbirth women. HIV was detected in 3% of abortion and 0.8% of stillbirth women. MCH service utilization was determined by knowledge of contraceptives [IRR 1.29, 95% CI 1.18-1.42], tertiary education [IRR 4.29, 95% CI 3.72-4.96], secondary education. [IRR 3.14, 95% CI 2.73-3.61], married women [IRR 2.08, 95% CI 1.84-2.34], family size [IRR 0.67, 95% CI 1.001-1.01], the median time of pregnancy after stillbirth and abortion were 12 months. Ante-partum hemorrhage was observed in 23.1% of pregnant mothers with a past history of abortion cases and post-partum hemorrhage was observed in 25.6% of pregnant mothers with a past history of abortion. PREGNANCY INDUCED DIABETES MELLITUS was observed 14.3% of pregnant mothers with a past history of stillbirth and pregnancy-induced hypertension were observed in 9.2% of mothers with a past history of stillbirth.
CONCLUSION
Obstetric hemorrhage was the common complications of abortion women while Pregnancy-induced diabetic Mellitus and pregnancy-induced hypertension were the most common complications of stillbirth for the next pregnancy.
Topics: Abortion, Induced; Abortion, Spontaneous; Female; Humans; Longitudinal Studies; Pregnancy; Prospective Studies; Stillbirth
PubMed: 34563190
DOI: 10.1186/s12905-021-01485-0 -
BMC Pregnancy and Childbirth Nov 2022There is a renewed call to address preventable foetal deaths in high-income countries, especially where progress has been slow. The Centers for Disease Control and...
BACKGROUND
There is a renewed call to address preventable foetal deaths in high-income countries, especially where progress has been slow. The Centers for Disease Control and Prevention released publicly, for the first time, the initiating cause and estimated timing of foetal deaths in 2014. The objective of this study is to describe risk and characteristics of antepartum versus intrapartum stillbirths in the U.S., and frequency of pathological examination to determine cause.
METHODS
We conducted a cross-sectional study of singleton births (24-43 weeks) using 2014 U.S. Fetal Death and Natality data available from the National Center for Health Statistics. The primary outcome was timing of death (antepartum (n = 6200), intrapartum (n = 453), and unknown (n = 5403)). Risk factors of interest included maternal sociodemographic, behavioural, medical and obstetric factors, along with foetal sex. We estimated gestational week-specific stillbirth hazard, risk factors for intrapartum versus antepartum stillbirth using multivariable log-binomial regression models, conditional probabilities of intrapartum and antepartum stillbirth at each gestational week, and frequency of pathological examination by timing of death.
RESULTS
The gestational age-specific stillbirth hazard was approximately 2 per 10,000 foetus-weeks among preterm gestations and > 3 per 10,000 foetus-weeks among term gestations. Both antepartum and intrapartum stillbirth risk increased in late-term and post-term gestations. The risk of intrapartum versus antepartum stillbirth was higher among those without a prior live birth, relative to those with at least one prior live birth (RR 1.32; 95% CI 1.08-1.61) and those with gestational hypertension, relative to those with no report of gestational hypertension (RR 1.47; 95% CI 1.09-1.96), and lower among Black, relative to white, individuals (RR 0.70; 95% CI 0.55-0.89). Pathological examination was not performed/planned in 25% of known antepartum stillbirths and 29% of known intrapartum stillbirths.
CONCLUSION
These findings suggest greater stillbirth risk in the late-term and post-term periods. Primiparous mothers had greater risk of intrapartum than antepartum still birth, suggesting the need for intrapartum interventions for primiparous mothers in this phase of pregnancy to prevent some intrapartum foetal deaths. Efforts are needed to improve understanding, prevention and investigation of foetal deaths as well as improve stillbirth data quality and completeness in the United States.
Topics: United States; Female; Pregnancy; Infant, Newborn; Humans; Stillbirth; Cross-Sectional Studies; Hypertension, Pregnancy-Induced; Sex Factors; Parturition
PubMed: 36447143
DOI: 10.1186/s12884-022-05185-x -
PloS One 2021The incidence of stillbirth has decreased marginally or remained stable during the past decades in high income countries. A recent report has shown Stockholm to have a...
INTRODUCTION
The incidence of stillbirth has decreased marginally or remained stable during the past decades in high income countries. A recent report has shown Stockholm to have a lower incidence of stillbirth at term than other parts of Sweden. The risk of antepartum stillbirth increases in late term and postterm pregnancies which is one of the factors contributing to the current discussion regarding the optimal time of induction of labor due to postterm pregnancy.
MATERIAL AND METHODS
This is a cohort study based on the Stockholm Stillbirth Database which contains all cases of stillbirth from 1998-2018 in Stockholm County. All cases were reviewed systematically and the cause of death was evaluated according to the Stockholm Stillbirth Classification. Stillbirths diagnosed between gestational week (GW) 37+0 and 40+6 n = 605 were compared to stillbirths diagnosed from GW 41+0 and onwards n = 157, according to the cause of stillbirth and pregnancy and maternal characteristics. The aim was to evaluate the incidence of stillbirth over time and the incidence of stillbirth diagnosed from GW 41+0.
RESULTS
In Stockholm County the overall incidence of stillbirth has decreased from 4.6/1000 births during the period 1998-2004 to 3.4/1000 births during the period 2014-2018, p-value <0.001. When comparing the same time periods, the incidence of stillbirth diagnosed from GW 41+0 and onwards has decreased from 0.5/1000 births to 0.15/1000 births, p-value <0.001. Among women still pregnant at GW 41+0 the incidence of stillbirth has decreased from 1.8/ 1000 to 0.5/ 1000. When comparing stillbirths diagnosed at GW 37+0-40+6 with stillbirths diagnosed from GW 41+0 and onwards infection was a more common cause of stillbirth in the latter group.
CONCLUSION
In Stockholm County there was a decreasing incidence of stillbirth overall and in stillbirths diagnosed from 41+0 weeks of gestation and onwards during the period 1998-2018. In stillbirths diagnosed from GW 41+0 and onwards infection was a more common cause of death compared to stillbirths diagnosed between GW 37+0 and 40+6.
Topics: Adult; Cause of Death; Cohort Studies; Female; Gestational Age; Humans; Labor, Obstetric; Pregnancy; Pregnancy Complications; Pregnancy, Prolonged; Stillbirth; Sweden; Young Adult
PubMed: 34033674
DOI: 10.1371/journal.pone.0251965 -
The Australian & New Zealand Journal of... Aug 2022There is scant literature about antepartum stillbirth management but guidelines usually recommend reserving caesarean sections for exceptional circumstances. However,...
BACKGROUND
There is scant literature about antepartum stillbirth management but guidelines usually recommend reserving caesarean sections for exceptional circumstances. However, little is known about caesarean section rates following antepartum stillbirth in Australia.
AIMS
We aimed to describe the onset of labour, mode of birth, and use of analgesia and anaesthesia following antepartum stillbirth and to identify factors associated with caesarean section.
MATERIAL AND METHODS
In this retrospective cohort study, we used a population-based dataset of all singleton antepartum stillbirths ≥20 weeks gestation in Western Australia between 2010-2015. The overall, primary and repeat caesarean section rates for antepartum stillbirths were calculated and multivariable Poisson regression analyses were performed to identify associated factors, and to calculate relative risks (RRs) and 95% confidence intervals (CIs).
RESULTS
This study included 634 antepartum stillbirths. Labour was spontaneous for 134 (21.1%), induced for 457 (72.1%), and 43 (6.8%) had a prelabour caesarean section. The overall, primary and repeat caesarean section rates were 8.5%, 4.6% and 23.0% respectively and increased with gestation (P trends all <0.01). Other factors associated with an increased caesarean section risk included: any placenta praevia or placental abruption, birth at a metropolitan private hospital, large-for-gestational-age birthweight, and any maternal chronic condition. During labour, the most frequently used types of analgesia were systemic narcotics (46.0%) and regional blocks (34.7%) while among those who had a caesarean section, 40.7% had a general anaesthetic.
CONCLUSIONS
In Western Australia between 2010-2015, the caesarean section rates among women with antepartum stillbirths were low, in line with current guidelines.
Topics: Cesarean Section; Female; Humans; Placenta; Pregnancy; Retrospective Studies; Stillbirth; Western Australia
PubMed: 35170023
DOI: 10.1111/ajo.13494 -
Expert Review of Anti-infective Therapy Sep 2021: Infections during pregnancy are a preventable public health concern globally, with the highest burden occurring in low- and middle-income countries. Despite clear... (Review)
Review
: Infections during pregnancy are a preventable public health concern globally, with the highest burden occurring in low- and middle-income countries. Despite clear interventions to reduce these infections, their impact on preventing stillbirths is unclear, with conflicting evidence.: The purpose of this review is to discuss data regarding infectious causes of stillbirths, and interventions for the prevention and/or treatment of these infections. We discuss the limitations in evaluating the true effect of the interventions on stillbirths, and highlight the importance of preventing infections in the grand scheme of improving maternal and infant pregnancy outcomes. We used PubMed to identify relevant studies, reviews, and meta-analysis until January 2021.: Maternal infections during pregnancy, especially malaria and syphilis, are notable causes of stillbirth in low- and middle-income countries. Despite considerable global advocacy, there is scant recognition of the potential to reduce the burden of antepartum stillbirths related to infections. Reducing stillbirths overall must become an important indicator for quality of care and accountability, and progress must also be assessed by coverage of key interventions that impact stillbirths, which includes population-based screening, prevention and timely treatment of infections during pregnancy.
Topics: Developing Countries; Female; Global Health; Humans; Pregnancy; Pregnancy Complications, Infectious; Pregnancy Outcome; Prenatal Care; Quality of Health Care; Stillbirth
PubMed: 33517816
DOI: 10.1080/14787210.2021.1882849 -
MedRxiv : the Preprint Server For... Aug 2023Chikungunya virus (CHIKV) has become a global public health concern since the reemergence of the Indian Ocean lineage and expansion of the Asian genotype. CHIKV...
Chikungunya virus (CHIKV) has become a global public health concern since the reemergence of the Indian Ocean lineage and expansion of the Asian genotype. CHIKV infection causes acute febrile illness, rash, and arthralgia and during pregnancy may affect both mothers and infants. The mother-to-child transmission (MTCT) of CHIKV in Africa remains understudied. We screened 1006 pregnant women at two clinics in Nigeria between 2019 and 2022 and investigated the prevalence and MTCT of CHIKV. Of the 1006, 119 tested positive for CHIKV IgM, of which 36 underwent detailed laboratory tests. While none of the IgM reactive samples were RT-PCR positive, 14 symptomatic pregnant women were confirmed by CHIKV neutralization test. Twelve babies were followed with 8 normal and 4 abnormal outcomes, including stillbirth, cleft lip/palate with microcephaly, preterm delivery, polydactyly with sepsis and jaundice. CHIKV IgM testing identified 3 antepartum transmissions, further studies will determine its impact in antepartum infection.
PubMed: 37609297
DOI: 10.1101/2023.08.05.23293675 -
Archives of Gynecology and Obstetrics Feb 2021To evaluate the effect of the choice growth chart and threshold used to define small for gestational age (SGA) on the predictive value of SGA for placenta-related or...
PURPOSE
To evaluate the effect of the choice growth chart and threshold used to define small for gestational age (SGA) on the predictive value of SGA for placenta-related or unexplained antepartum stillbirth.
METHODS
A retrospective cohort study of all women with a singleton pregnancy who gave birth > 24 week gestation in a single center (2000-2016). The exposure of interest was SGA, defined as birth weight < 10th or < 25th centile according to three fetal growth charts (Hadlock et al., Radiology 181:129-133, 1991; intergrowth-21st (IG21), WHO 2017, and a Canadian birthweight-based reference-Kramer et al., Pediatrics 108:E35, 2001). The outcome of interest was antepartum stillbirth due to placental dysfunction or unknown etiology. Cases of stillbirth attributed to other specific etiologies were excluded.
RESULTS
A total of 49,458 women were included in the cohort. There were 103 (0.21%) cases of stillbirth due to placental dysfunction or unknown etiology. For cases in the early stillbirth cluster (≤ 30 weeks), the detection rate was high and was similar for the three ultrasound-based fetal growth charts of Hadlock, IG21, and WHO (range 83.3-87.0%). In contrast, the detection rate of SGA for cases in the late stillbirth cluster (> 30 weeks) was low, being highest for WHO and Hadlock (36.7% and 34.7%, respectively), and lowest for IG21 (18.4%). Using a threshold of the 25th centile increased the detection rate for stillbirth by approximately 15-20% compared with that achieved by the 10th centile cutoff.
CONCLUSION
At > 30 week gestation, the Hadlock or WHO fetal growth charts provided the best balance between detection rate and false positive rate for stillbirth.
Topics: Adult; Birth Weight; Canada; Female; Fetal Development; Fetal Growth Retardation; Gestational Age; Growth Charts; Humans; Infant, Newborn; Infant, Small for Gestational Age; Placenta; Pregnancy; Retrospective Studies; Stillbirth; Ultrasonography, Prenatal
PubMed: 32803394
DOI: 10.1007/s00404-020-05747-4 -
Population Health Metrics Feb 2021Household surveys remain important sources of stillbirth data, but omission and misclassification are common. Classifying adverse pregnancy outcomes as stillbirths...
BACKGROUND
Household surveys remain important sources of stillbirth data, but omission and misclassification are common. Classifying adverse pregnancy outcomes as stillbirths requires accurate reporting of vital status at birth and gestational age or birthweight for every pregnancy. Further categorisation, e.g. by sex, or timing (intrapartum/antepartum) improves data to understand and prevent stillbirth.
METHODS
We undertook a cross-sectional population-based survey of women of reproductive age in five health and demographic surveillance system sites in Bangladesh, Ethiopia, Ghana, Guinea-Bissau and Uganda (2017-2018). All women answered a full birth history with pregnancy loss questions (FBH+) or a full pregnancy history (FPH). A sub-sample across both groups were asked additional stillbirth questions. Questions were evaluated using descriptive measures. Using an interpretative paradigm and phenomenology methodology, focus group discussions with women exploring barriers to reporting birthweight for stillbirths were conducted. Thematic analysis was guided by an a priori codebook.
RESULTS
Overall 69,176 women reported 98,483 livebirths (FBH+) and 102,873 pregnancies (FPH). Additional questions were asked for 1453 stillbirths, 1528 neonatal deaths and 12,620 surviving children born in the 5 years prior to the survey. Completeness was high (> 99%) for existing FBH+/FPH questions on signs of life at birth and gestational age (months). Discordant responses in signs of life at birth between different questions were common; nearly one-quarter classified as stillbirths on FBH+/FPH were reported born alive on additional questions. Availability of information on gestational age (weeks) (58.1%) and birthweight (13.2%) was low amongst stillbirths, and heaping was common. Most women (93.9%) were able to report the sex of their stillborn baby. Response completeness for stillbirth timing (18.3-95.1%) and estimated proportion intrapartum (15.6-90.0%) varied by question and site. Congenital malformations were reported in 3.1% stillbirths. Perceived value in weighing a stillborn baby varied and barriers to weighing at birth a nd knowing birthweight were common.
CONCLUSIONS
Improving stillbirth data in surveys will require investment in improving the measurement of vital status, gestational age and birthweight by healthcare providers, communication of these with women, and overcoming reporting barriers. Given the large burden and effect on families, improved data must be made available to end preventable stillbirths.
Topics: Birth Weight; Child; Cross-Sectional Studies; Female; Gestational Age; Humans; Infant; Infant, Newborn; Perinatal Death; Pregnancy; Stillbirth
PubMed: 33557841
DOI: 10.1186/s12963-020-00239-8 -
BJOG : An International Journal of... Jan 2024To investigate the incidence of antepartum stillbirth in relation to the distribution of neonatal/fetal weight for different gestational ages. (Observational Study)
Observational Study
OBJECTIVES
To investigate the incidence of antepartum stillbirth in relation to the distribution of neonatal/fetal weight for different gestational ages.
DESIGN
Prospective observational cohort study.
SETTING
Obstetric ultrasound departments in two UK maternity hospitals.
POPULATION
168 966 women with singleton pregnancies attending for routine antenatal care.
METHODS
We examined the incidence of antepartum stillbirths, within different birthweight and fetal weight percentile subgroups, conditioning for gestational age.
MAIN OUTCOME MEASURES
Incidence of antepartum stillbirth.
RESULTS
The risk of stillbirth progressively increased for lower birthweight. Considering the 25-75th percentile as the reference category, the relative risks for stillbirth at <37 weeks' gestation were 7.6 (95% confidence interval [CI] 5.7-10.2) <1st percentile, 2.6 (95% CI 1.8-3.7) 1 to 10th percentile, 1.4 (95% CI 0.9-2.1) 10 to 25th percentile, 0.8 (95% CI 0.4-1.5) 75 to 90th percentile, 0.8 (95% CI 0.4-1.7) 90 to 99th percentile, 0.9 (95% CI 0.3-2.5) >99th percentile. The respective values for births at ≥37 weeks' gestation were 5.0 (95% CI 2.9-8.9), 2.1 (95% CI 1.4-3.3), 1.4 (95% CI 0.9-2.1), 1.2 (95% CI 0.7-1.8), 1.0 (95% CI 0.6-1.8) and 4.0 (95% CI 1.8-9.3). The incidence of stillbirth in ongoing low-risk singleton pregnancies gradually increases for smaller fetuses at any gestational point. The higher incidence (5.56%) was evident for fetal weight <1st percentile between 24 and 28 weeks' gestation.
CONCLUSION
Fetal weight and the weight of the stillborn have a continuous association with the incidence of antepartum stillbirth which is affected by gestational age.
Topics: Infant, Newborn; Pregnancy; Female; Humans; Birth Weight; Stillbirth; Gestational Age; Prospective Studies; Fetal Weight; Infant, Small for Gestational Age; Fetal Growth Retardation
PubMed: 37691257
DOI: 10.1111/1471-0528.17652