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Journal of Ultrasound in Medicine :... Aug 2014The objectives of this systematic review were to examine the reproducibility of sonographic estimates of amniotic fluid volume (AFV) in twin pregnancies, compare the... (Review)
Review
The objectives of this systematic review were to examine the reproducibility of sonographic estimates of amniotic fluid volume (AFV) in twin pregnancies, compare the association of sonographic estimates of AFV with dye-determined AFV, and correlate AFV with antepartum, intrapartum, and perinatal outcomes in twin pregnancies. Studies were included if they were adequately powered and investigated antepartum, intrapartum, and/or perinatal adverse outcome parameters in twin gestations. Studies with comparable populations and exclusion criteria were merged into forest plots. Data comparing the accuracy of AFV assessment, correlation of AFV with gestational age, and adverse outcomes were tabulated. Five of the 6 studies investigating AFV by the amniotic fluid index as a function of gestational age reported data fitting a quadratic equation, with fluid volumes peaking at mid gestation and then declining. This trend was less pronounced when AFV was assessed by the single deepest pocket (2 of 4 studies reporting a quadratic fit). Polyhydramnios was associated with prematurity in 2 of 4 studies (1 amniotic fluid index and 1 single deepest pocket), and oligohydramnios was associated with prematurity in 1 single deepest pocket study. Stillbirth was the only intrapartum outcome reported in more than 1 study. Perinatal outcomes associated with polyhydramnios included neonatal death (P < .05 in 1 of 2 studies), low Apgar scores (1 of 2 studies), neonatal intensive care unit admission (1 of 2 studies), and low birth weight (2 of 3 studies).
Topics: Amniotic Fluid; Female; Humans; Oligohydramnios; Polyhydramnios; Pregnancy; Pregnancy Outcome; Pregnancy, Twin; Reproducibility of Results; Twins; Ultrasonography, Prenatal
PubMed: 25063400
DOI: 10.7863/ultra.33.8.1353 -
Obstetrics and Gynecology Jun 2021The goal of antepartum fetal surveillance is to reduce the risk of stillbirth. Antepartum fetal surveillance techniques based on assessment of fetal heart rate (FHR)...
The goal of antepartum fetal surveillance is to reduce the risk of stillbirth. Antepartum fetal surveillance techniques based on assessment of fetal heart rate (FHR) patterns have been in clinical use for almost four decades and are used along with real-time ultrasonography and umbilical artery Doppler velocimetry to evaluate fetal well-being. Antepartum fetal surveillance techniques are routinely used to assess the risk of fetal death in pregnancies complicated by preexisting maternal conditions (eg, diabetes mellitus) as well as those in which complications have developed (eg, fetal growth restriction). The purpose of this document is to provide a review of the current indications for and techniques of antepartum fetal surveillance and outline management guidelines for antepartum fetal surveillance that are consistent with the best scientific evidence.
PubMed: 34011881
DOI: 10.1097/AOG.0000000000004411 -
The Journal of Maternal-fetal &... Sep 2020To examine the potential value of fetal ultrasound and maternal characteristics in the prediction of antepartum stillbirth after 32 weeks' gestation. This was a...
To examine the potential value of fetal ultrasound and maternal characteristics in the prediction of antepartum stillbirth after 32 weeks' gestation. This was a retrospective multicenter study in Spain. In 29 pregnancies, umbilical artery pulsatility index (UA PI), middle cerebral artery pulsatility index (MCA PI), cerebroplacental ratio (CPR), estimated fetal weight (EFW), and maternal characteristics were recorded within 15 days prior to a stillbirth. The values of UA PI, MCA PI, and CPR were converted into multiples of the normal median (MoM) for gestational age and the EFW was expressed as percentile according to a Spanish reference range for gestational age. Data from the 29 pregnancies with stillbirths and 2298 control pregnancies resulting in livebirths were compared and multivariate logistic regression analysis was used to determine significant predictors of stillbirth. The only significant predictor of stillbirth was CPR (OR = 0.161, 95% confidence interval [CI] 0.035, 0.654; = .014); the area under the receiver operating characteristics curve was 0.663 (95% CI 0.545, 0.782) and the detection rate (DR) was 32.14% at a 10% false-positive rate (FPR). In addition, when we included MCA and UA PI MoM instead of CPR, only MCA PI MoM was significant (OR = 0.104, 95% confidence interval [CI] 0.013, 0.735; = .029), with similar prediction abilities (area under the curve (AUC) 0.645, DR 28.6%, FPR 10%). The CPR and MCA PI are predictors of late stillbirth but the performance of prediction is poor.
Topics: Female; Gestational Age; Humans; Middle Cerebral Artery; Pregnancy; Pulsatile Flow; Retrospective Studies; Spain; Stillbirth; Ultrasonography, Prenatal; Umbilical Arteries
PubMed: 30672365
DOI: 10.1080/14767058.2019.1566900 -
American Journal of Perinatology Jan 2022We sought to quantify the distribution of stillbirths by gestational age (GA) in a contemporary cohort and to determine identifiable risk factors associated with...
OBJECTIVE
We sought to quantify the distribution of stillbirths by gestational age (GA) in a contemporary cohort and to determine identifiable risk factors associated with stillbirth prior to 32 weeks of gestation.
STUDY DESIGN
Population-based case-control study of all stillbirths in the United States during the year 2014, utilizing vital statistics data, obtained from the National Center for Health Statistics. Distribution of stillbirths were stratified by 20 to 44 weeks of GA, in women diagnosed with stillbirth in the antepartum period. Pregnancy characteristics were compared between those diagnosed with stillbirth <32 versus ≥32 weeks of gestation. Multivariate logistic regression estimated the relative influence of various factors on the outcome of stillbirth prior to 32 weeks of gestation.
RESULTS
There were 15,998 nonlaboring women diagnosed with stillbirth during 2014 in the United States between 20 and 44 weeks. Of them, 60.1% ( = 9,618) occurred before antenatal fetal surveillance (ANFS) is typically initiated (<32 weeks) and 39.9% ( = 6,380) were diagnosed at ≥32 weeks. Women with stillbirth prior to 32 weeks were more likely to be of non-Hispanic Black race (29.0 vs. 23.9%, < 0.001), nulliparous (53.8 vs. 50.6%, = 0.001), have chronic hypertension (CHTN; 6.0 vs. 4.3%, < 0.001), and fetal growth restriction as evidenced by small for GA (SGA < 10th%) birth weight (44.8 vs. 42.1%, < 0.001) as opposed to women with stillbirth after 32 weeks. After adjustment, SGA birth weight (adjusted odds ratio [aOR] = 1.2, 95% confidence interval [CI]: 1.1-1.3), Black race (aOR = 1.2, 95% CI: 1.1-1.3), and CHTN (aOR = 1.3, 95% CI: 1.1-1.5) were associated with stillbirth prior to 32 weeks of gestation as opposed to stillbirth after 32 weeks.
CONCLUSION
More than 6 out of 10 stillbirths in this study occurred <32 weeks of gestation, before ANFS is typically initiated under American College of Obstetricians and Gynecologists recommendations. Among identifiable risk factors, CHTN, Black race, and fetal growth restriction were associated with higher risk of stillbirth before 32 weeks of gestation. Earlier ANFS may be warranted at in certain "at risk" women.
KEY POINTS
· Six out of 10 stillbirths occur before 32 weeks of gestation.. · We evaluated factors associated with stillbirth <32 weeks.. · Hypertension and fetal growth restriction were associated with early stillbirth..
Topics: Black or African American; Case-Control Studies; Chronic Disease; Female; Fetal Growth Retardation; Gestational Age; Humans; Hypertension; Hypertension, Pregnancy-Induced; Infant, Small for Gestational Age; Logistic Models; Pregnancy; Pregnancy in Diabetics; Risk Factors; Stillbirth; United States
PubMed: 32736406
DOI: 10.1055/s-0040-1714421 -
Clinical Infectious Diseases : An... Jun 2024We evaluated associations between antepartum weight change and adverse pregnancy outcomes and between antiretroviral therapy (ART) regimens and week 50 postpartum body... (Randomized Controlled Trial)
Randomized Controlled Trial
Weight Changes and Adverse Pregnancy Outcomes With Dolutegravir- and Tenofovir Alafenamide Fumarate-Containing Antiretroviral Treatment Regimens During Pregnancy and Postpartum.
BACKGROUND
We evaluated associations between antepartum weight change and adverse pregnancy outcomes and between antiretroviral therapy (ART) regimens and week 50 postpartum body mass index in IMPAACT 2010.
METHODS
Women with human immunodeficiency virus (HIV)-1 in 9 countries were randomized 1:1:1 at 14-28 weeks' gestational age (GA) to start dolutegravir (DTG) + emtricitabine (FTC)/tenofovir alafenamide fumarate (TAF) versus DTG + FTC/tenofovir disoproxil fumarate (TDF) versus efavirenz (EFV)/FTC/TDF. Insufficient antepartum weight gain was defined using Institute of Medicine guidelines. Cox-proportional hazards regression models were used to evaluate the association between antepartum weight change and adverse pregnancy outcomes: stillbirth (≥20 weeks' GA), preterm delivery (<37 weeks' GA), small size for GA (<10th percentile), and a composite of these endpoints.
RESULTS
A total of 643 participants were randomized: 217 to the DTG + FTC/TAF, 215 to the DTG + FTC/TDF, and 211 to the EFV/FTC/TDF arm. Baseline medians were as follows: GA, 21.9 weeks; HIV RNA, 903 copies/mL; and CD4 cell count, 466/μL. Insufficient weight gain was least frequent with DTG + FTC/TAF (15.0%) versus DTG + FTC/TDF (23.6%) and EFV/FTC/TDF (30.4%). Women in the DTG + FTC/TAF arm had the lowest rate of composite adverse pregnancy outcome. Low antepartum weight gain was associated with higher hazard of composite adverse pregnancy outcome (hazard ratio, 1.44 [95% confidence interval, 1.04-2.00]) and small size for GA (1.48 [.99-2.22]). More women in the DTG + FTC/TAF arm had a body mass index ≥25 (calculated as weight in kilograms divided by height in meters squared) at 50 weeks postpartum (54.7%) versus the DTG + FTC/TDF (45.2%) and EFV/FTC/TDF (34.2%) arms.
CONCLUSIONS
Antepartum weight gain on DTG regimens was protective against adverse pregnancy outcomes typically associated with insufficient weight gain, supportive of guidelines recommending DTG-based ART for women starting ART during pregnancy. Interventions to mitigate postpartum weight gain are needed.
Topics: Humans; Female; Pregnancy; HIV Infections; Tenofovir; Heterocyclic Compounds, 3-Ring; Adult; Oxazines; Pyridones; Piperazines; Pregnancy Outcome; Pregnancy Complications, Infectious; Postpartum Period; Anti-HIV Agents; Alanine; Weight Gain; Adenine; HIV-1; Young Adult
PubMed: 38180851
DOI: 10.1093/cid/ciae001 -
International Journal of Infectious... Feb 2024Chikungunya virus (CHIKV), a reemerging global public health concern, which causes acute febrile illness, rash, and arthralgia and may affect both mothers and infants...
OBJECTIVES
Chikungunya virus (CHIKV), a reemerging global public health concern, which causes acute febrile illness, rash, and arthralgia and may affect both mothers and infants during pregnancy. Mother-to-child transmission (MTCT) of CHIKV in Africa remains understudied.
METHODS
Our cohort study screened 1006 pregnant women with a Zika/dengue/CHIKV rapid test at two clinics in Nigeria between 2019 and 2022. Women who tested positive for the rapid test were followed through their pregnancy and their infants were observed for 6 months, with a subset tested by reverse transcription-polymerase chain reaction (RT-PCR) and neutralization, to investigate seropositivity rates and MTCT of CHIKV.
RESULTS
Of the 1006, 119 tested positive for CHIKV immunoglobulin (Ig)M, 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 eight normal and four abnormal outcomes, including stillbirth, cleft lip/palate with microcephaly, preterm delivery, polydactyly with sepsis, and jaundice. CHIKV IgM testing identified three possible antepartum transmissions.
CONCLUSION
In Nigeria, we found significant CHIKV infection in pregnancy and possible CHIKV antepartum transmission associated with birth abnormalities.
Topics: Infant; Infant, Newborn; Humans; Female; Pregnancy; Chikungunya virus; Pregnant Women; Cohort Studies; Nigeria; Cleft Lip; Infectious Disease Transmission, Vertical; Cleft Palate; Chikungunya Fever; Zika Virus Infection; Zika Virus; Stillbirth; Immunoglobulin M; Dengue
PubMed: 38056689
DOI: 10.1016/j.ijid.2023.11.036 -
The Cochrane Database of Systematic... Nov 2014Domestic violence during pregnancy is a major public health concern. This preventable risk factor threatens both the mother and baby. Routine perinatal care visits offer... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Domestic violence during pregnancy is a major public health concern. This preventable risk factor threatens both the mother and baby. Routine perinatal care visits offer opportunities for healthcare professionals to screen and refer abused women for effective interventions. It is, however, not clear which interventions best serve mothers during pregnancy and postpartum to ensure their safety.
OBJECTIVES
To examine the effectiveness and safety of interventions in preventing or reducing domestic violence against pregnant women.
SEARCH METHODS
We searched the Cochrane Pregnancy and Childbirth Group's Trials Register (31 July 2014), scanned bibliographies of published studies and corresponded with investigators.
SELECTION CRITERIA
We included randomised controlled trials (RCTs) including cluster-randomised trials, and quasi-randomised controlled trials (e.g. where there was alternate allocation) investigating the effect of interventions in preventing or reducing domestic violence during pregnancy.
DATA COLLECTION AND ANALYSIS
Two review authors independently assessed trials for inclusion and risk of bias, extracted data and checked them for accuracy.
MAIN RESULTS
We included 10 trials with a total of 3417 women randomised. Seven of these trials, recruiting 2629 women, contributed data to the review. However, results for all outcomes were based on single studies. There was limited evidence for the primary outcomes of reduction of episodes of violence (physical, sexual, and/or psychological) and prevention of violence during and up to one year after pregnancy (as defined by the authors of trials). In one study, women who received the intervention reported fewer episodes of partner violence during pregnancy and in the postpartum period (risk ratio (RR) 0.62, 95% confidence interval (CI) 0.43 to 0.88, 306 women, moderate quality). Groups did not differ for Conflict Tactics Score - the mean partner abuse scores in the first three months postpartum (mean difference (MD) 4.20 higher, 95% CI -10.74 to 19.14, one study, 46 women, very low quality). The Current Abuse Score for partner abuse in the first three months was also similar between groups (MD -0.12 lower, 95% CI -0.31 lower to 0.07 higher, one study, 191 women, very low quality). Evidence for the outcomes episodes of partner abuse during pregnancy or episodes during the first three months postpartum was not significant (respectively, RR 0.50, 95% CI 0.25 to 1.02, one study with 220 women, very low quality; and RR 0.60, 95% CI 0.35 to 1.04, one study, 271 women, very low quality). Finally, the risk for low birthweight (< 2500 g) did not differ between groups (RR 0.74, 95 % CI 0.41 to 1.32, 306 infants, low quality).There were few statistically significant differences between intervention and control groups for depression during pregnancy and the postnatal period. Only one study reported findings for neonatal outcomes such as preterm delivery and birthweight, and there were no clinically significant differences between groups. None of the studies reported results for other secondary outcomes: Apgar score less than seven at one minute and five minutes, stillbirth, neonatal death, miscarriage, maternal mortality, antepartum haemorrhage, and placental abruption.
AUTHORS' CONCLUSIONS
There is insufficient evidence to assess the effectiveness of interventions for domestic violence on pregnancy outcomes. There is a need for high-quality, RCTs with adequate statistical power to determine whether intervention programs prevent or reduce domestic violence episodes during pregnancy, or have any effect on maternal and neonatal mortality and morbidity outcomes.
Topics: Domestic Violence; Female; Humans; Pregnancy; Pregnancy Outcome; Pregnant Women; Randomized Controlled Trials as Topic; Safety; Sex Offenses
PubMed: 25390767
DOI: 10.1002/14651858.CD009414.pub3 -
Lancet (London, England) Nov 2015Antenatal care of women with epilepsy is varied. The association of epilepsy and antiepileptic drug exposure with pregnancy outcomes needs to be quantified to guide... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Antenatal care of women with epilepsy is varied. The association of epilepsy and antiepileptic drug exposure with pregnancy outcomes needs to be quantified to guide management. We did a systematic review and meta-analysis to investigate the association between epilepsy and reproductive outcomes, with or without exposure to antiepileptic drugs.
METHODS
We searched MEDLINE, Embase, Cochrane, AMED, and CINAHL between Jan 1, 1990, and Jan 21, 2015, with no language or regional restrictions, for observational studies of pregnant women with epilepsy, which assessed the risk of obstetric complications in the antenatal, intrapartum, or postnatal period, and any neonatal complications. We used the Newcastle-Ottawa Scale to assess the methodological quality of the included studies, risk of bias in the selection and comparability of cohorts, and outcome. We assessed the odds of maternal and fetal complications (excluding congenital malformations) by comparing pregnant women with and without epilepsy and undertook subgroup analysis based on antiepileptic drug exposure in women with epilepsy. We summarised the association as odds ratio (OR; 95% CI) using random effects meta-analysis. The PROSPERO ID of this Systematic Review's protocol is CRD42014007547.
FINDINGS
Of 7050 citations identified, 38 studies from low-income and high-income countries met our inclusion criteria (39 articles including 2,837,325 pregnancies). Women with epilepsy versus those without (2,809,984 pregnancies) had increased odds of spontaneous miscarriage (OR 1·54, 95% CI 1·02-2·32; I(2)=67%), antepartum haemorrhage (1·49, 1·01-2·20; I(2)=37%), post-partum haemorrhage (1·29, 1·13-1·49; I(2)=41%), hypertensive disorders (1·37, 1·21-1·55; I(2)=23%), induction of labour (1·67, 1·31-2·11; I(2)=64%), caesarean section (1·40, 1·23-1·58; I(2)=66%), any preterm birth (<37 weeks of gestation; 1·16, 1·01-1·34; I(2)=64%), and fetal growth restriction (1·26, 1·20-1·33; I(2)=1%). The odds of early preterm birth, gestational diabetes, fetal death or stillbirth, perinatal death, or admission to neonatal intensive care unit did not differ between women with epilepsy and those without the disorder.
INTERPRETATION
A small but significant association of epilepsy, exposure to antiepileptic drugs, and adverse outcomes exists in pregnancy. This increased risk should be taken into account when counselling women with epilepsy.
FUNDING
EBM CONNECT Collaboration.
Topics: Anticonvulsants; Epilepsy; Female; Humans; Pregnancy; Pregnancy Complications; Pregnancy Outcome
PubMed: 26318519
DOI: 10.1016/S0140-6736(15)00045-8 -
International Journal of Gynaecology... Aug 2021To evaluate the association between obstetric and medical risk factors and stillbirths in a Kenyan set-up.
OBJECTIVE
To evaluate the association between obstetric and medical risk factors and stillbirths in a Kenyan set-up.
METHODS
A case-control study was conducted in four hospitals between August 2018 and April 2019. Two hundred and fourteen women with stillbirths and 428 with live births at more than >28 weeks of gestation were enrolled. Data collection was via interviews and abstraction from medical records. Outcome variables were stillbirth and live birth; exposure variables were sociodemographic characteristics, and medical and obstetric factors. The two-sample t test and χ test were used to compare continuous and categorical variables respectively. The association between the exposure and outcome variable was done using logistic regression. A P value less than 0.05 was considered statistically significant.
RESULTS
Stillbirth was associated with pre-eclampsia without severe features (odds ratio [OR] 9.1, 95% confidence interval [CI] 2.6-32.5), pre-eclampsia with severe features (OR 7.4, 95% CI 2.4-22.8); eclampsia (OR 9.2, 95% CI 2.6-32.5), placenta previa (OR 8.6 95% CI 2.8-25.9), placental abruption (OR 6.9 95% CI 2.2-21.3), preterm delivery(OR 9.5, 95% CI 5.7-16), and gestational diabetes mellitus, (OR 11.5, 95% CI 2.5-52.6). Stillbirth was not associated with multiparity, anemia, and HIV.
CONCLUSION
Proper antepartum care and surveillance to identify and manage medical and obstetric conditions with the potential to cause stillbirth are recommended.
Topics: Adult; Case-Control Studies; Diabetes, Gestational; Female; Humans; Infant, Newborn; Kenya; Obstetric Labor Complications; Parity; Placenta; Poverty; Pre-Eclampsia; Pregnancy; Pregnancy Complications; Premature Birth; Prenatal Care; Risk Factors; Stillbirth; Young Adult
PubMed: 33306840
DOI: 10.1002/ijgo.13528 -
Frontiers in Pediatrics 2022Stillbirth, which accounts for half of all the perinatal mortality, is not counted on policy, program, and investment agendas around the globe. It has been...
BACKGROUND
Stillbirth, which accounts for half of all the perinatal mortality, is not counted on policy, program, and investment agendas around the globe. It has been underestimated public health burden, particularly in developing countries. Ethiopia is among the top countries with a large prevalence of stillbirth in the world. However, there is a dearth of study on the current magnitude of stillbirth in the study area. Therefore, this study intended to assess the prevalence of stillbirth and its associated factors to bridge the gap.
METHODS
A hospital-based retrospective study was conducted from 1 to 28 February 2019 and data were collected by reviewing the chart records of all the women who gave birth in the past 2 years (January 2016 to December 2018) at Hiwot Fana Specialized University Hospital. Data were entered into EpiData version 4.2.0.0 software and transported to SPSS version 23 for analysis. Descriptive statistics such as frequency, mean, and SDs were generated. Determinants of stillbirth were analyzed using a binary logistic regression and presented by adjusted odds ratio (AOR) with a 95% CI.
RESULTS
The prevalence of stillbirth was 14.5% (95% CI: 11.7%, 17.6%). Low birth weight (AOR = 2.42, 95% CI: 1.23-4.76), prematurity (AOR = 2.10, 95% CI: 1.10-4.01), premature rupture of membranes (AOR = 2.08, 95% CI: 1.14-3.77), antepartum hemorrhage (AOR = 3.33, 95% CI: 1.66-6.67), obstructed labor (AOR = 2.87, 95% CI: 1.48-5.56), and preeclampsia (AOR = 2.91, 95% CI: 1.28-6.62) were an independently associated with stillbirth.
CONCLUSION
The prevalence of stillbirth in this study was high. Low birth weight, preterm birth, premature rupture of membranes, antepartum hemorrhage, obstructed labor, and preeclampsia were independently associated with a stillbirth. Therefore, much study is needed involving different stakeholders to reduce stillbirths by improving the health status of women through the provision of quality maternal care including referral systems.
PubMed: 35633972
DOI: 10.3389/fped.2022.820308