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Adu-Bredu TK, Rijken MJ, Nieto-Calvache AJ, Stefanovic V, Aryananda RA, Fox KA, Collins SL. A simple guide to ultrasound screening for placenta accreta spectrum for improving detection and optimizing management in resource limited settings. Int J Gynaecol Obstet 2023; 160:732-741. [PMID: 35900178 PMCID: PMC10086861 DOI: 10.1002/ijgo.14376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/21/2022] [Indexed: 11/07/2022]
Abstract
Placenta accreta spectrum is a pregnancy complication associated with severe morbidity and maternal mortality especially when not suspected antenatally and appropriate management instigated. Women in resource-limited settings are more likely to face adverse outcomes due to logistic, technical, and resource inadequacies. Accurate prenatal imaging is an important step in ensuring good outcomes because it allows adequate preparation and an appropriate management approach. This article provides a simple three-step approach aimed at guiding clinicians and sonographers with minimal experience in placental accreta spectrum through risk stratification and basic prenatal screening for this condition both with and without Doppler ultrasound.
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Affiliation(s)
| | - Marcus J Rijken
- Julius Global Health, Julius Centre for Health Science and Primary Care, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Department of Obstetrics and Gynecology, Amsterdam UMC, location AMC, Amsterdam, The Netherlands
| | - Albaro Jose Nieto-Calvache
- FundaciÓn Valle del Lili, Abnormally Invasive Placenta Clinic, Cali, Colombia.,Clinical Postgraduate Department, Universidad Icesi, Cali, Colombia
| | - Vedran Stefanovic
- Fetomaternal Medical Center, Department of Obstetrics and Gynecology, University of Helsinki, and Helsinki University Hospital, Helsinki, Finland
| | - Rozi Aditya Aryananda
- Maternal - Fetal Medicine Division, Obstetrics and Gynecology Department, Dr Soetomo Academic General Hospital, Universitas Airlangga, Surabaya, Indonesia
| | - Karin Anneliese Fox
- Division of Maternal - Fetal Medicine, Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Texas, USA
| | - Sally L Collins
- Nuffield Department of Women's and Reproductive Health, University of Oxford, Oxford, UK.,Fetal Medicine Unit, John Radcliffe Hospital, Oxford, UK
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Hernandez-Andrade E, Huntley ES, Bartal MF, Soto-Torres EE, Tirosh D, Jaiman S, Johnson A. Doppler evaluation of normal and abnormal placenta. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2022; 60:28-41. [PMID: 34806234 DOI: 10.1002/uog.24816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 11/12/2021] [Indexed: 06/13/2023]
Abstract
Doppler techniques are needed for the evaluation of the intraplacental circulation and can be of great value in the diagnosis of placental anomalies. Highly sensitive Doppler techniques can differentiate between the maternal (spiral arteries) and fetal (intraplacental branches of the umbilical artery) components of the placental circulation and assist in the evaluation of the placental functional units. A reduced number of placental functional units can be associated with obstetric complications, such as fetal growth restriction. Doppler techniques can also provide information on decidual vessels and blood movement. Abnormal decidual circulation increases the risk of placenta accreta. Doppler evaluation of the placenta greatly contributes to the diagnosis and clinical management of placenta accreta, vasa previa, placental infarcts, placental infarction hematoma, maternal floor infarction, massive perivillous fibrin deposition and placental tumors. However, it has a limited role in the diagnosis and clinical management of placental abruption, placental hematomas, placental mesenchymal dysplasia and mapping of placental anastomoses in monochorionic twin pregnancies. © 2021 International Society of Ultrasound in Obstetrics and Gynecology.
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Affiliation(s)
- E Hernandez-Andrade
- Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - E S Huntley
- Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - M F Bartal
- Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - E E Soto-Torres
- Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, TX, USA
| | - D Tirosh
- Department of Obstetrics and Gynecology, Soroka University Medical Center, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - S Jaiman
- Department of Obstetrics and Gynecology Wayne State University, Detroit, MI, USA
| | - A Johnson
- Department of Obstetrics and Gynecology and Reproductive Sciences, McGovern Medical School, University of Texas, Health Science Center at Houston (UTHealth), Houston, TX, USA
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Jaiman S, Romero R, Bhatti G, Jung E, Gotsch F, Suksai M, Gallo DM, Chaiworapongsa T, Kadar N. The role of the placenta in spontaneous preterm labor and delivery with intact membranes. J Perinat Med 2022; 50:553-566. [PMID: 35246973 PMCID: PMC9189066 DOI: 10.1515/jpm-2021-0681] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/20/2022] [Indexed: 12/16/2022]
Abstract
OBJECTIVES To determine whether placental vascular pathology and impaired placental exchange due to maturational defects are involved in the etiology of spontaneous preterm labor and delivery in cases without histologic acute chorioamnionitis. METHODS This was a retrospective, observational study. Cases included pregnancies that resulted in spontaneous preterm labor and delivery (<37 weeks), whereas uncomplicated pregnancies that delivered fetuses at term (≥37-42 weeks of gestation) were selected as controls. Placental histological diagnoses were classified into three groups: lesions of maternal vascular malperfusion, lesions of fetal vascular malperfusion, and placental microvasculopathy, and the frequency of each type of lesion in cases and controls was compared. Moreover, we specifically searched for villous maturational abnormalities in cases and controls. Doppler velocimetry of the umbilical and uterine arteries were performed in a subset of patients. RESULTS There were 184 cases and 2471 controls, of which 95 and 1178 had Doppler studies, respectively. The frequency of lesions of maternal vascular malperfusion was greater in the placentas of patients with preterm labor than in the control group [14.1% (26/184) vs. 8.8% (217/2471) (p=0.023)]. Disorders of villous maturation were more frequent in the group with preterm labor than in the control group: 41.1% (39/95) [delayed villous maturation in 31.6% (30/95) vs. 2.5% (13/519) in controls and accelerated villous maturation in 9.5% (9/95) vs. none in controls]. CONCLUSIONS Maturational defects of placental villi were associated with approximately 41% of cases of unexplained spontaneous preterm labor and delivery without acute inflammatory lesions of the placenta and with delivery of appropriate-for-gestational-age fetuses.
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Affiliation(s)
- Sunil Jaiman
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Pathology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Roberto Romero
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, Michigan, USA,Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, Michigan, USA,Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, USA,Detroit Medical Center, Detroit, Michigan, USA,Corresponding Author: Roberto Romero, MD, DMedSci, Chief, Perinatology Research Branch, NICHD/NIH/DHHS, Hutzel Women’s Hospital, 3990 John R Street, 4 Brush, Detroit, Michigan 48201, USA. (313) 993-2700;
| | - Gaurav Bhatti
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Biomedical Engineering, Wayne State University College of Engineering, Detroit, MI, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Eunjung Jung
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Francesca Gotsch
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Manaphat Suksai
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Dahiana M. Gallo
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
| | - Tinnakorn Chaiworapongsa
- Perinatology Research Branch, Division of Obstetrics and Maternal-Fetal Medicine, Division of Intramural Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, U.S. Department of Health and Human Services (NICHD/NIH/DHHS), Bethesda, Maryland, and Detroit, Michigan, USA,Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, Michigan, USA
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Bouachba A, Allias F, Nadaud B, Massardier J, Mekki Y, Bouscambert Duchamp M, Fourniere BDLA, Huissoud C, Trecourt A, Collardeau-Frachon S. Placental lesions and SARS-Cov-2 infection: Diffuse placenta damage associated to poor fetal outcome. Placenta 2021; 112:97-104. [PMID: 34329973 PMCID: PMC8280612 DOI: 10.1016/j.placenta.2021.07.288] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 06/29/2021] [Accepted: 07/14/2021] [Indexed: 12/15/2022]
Abstract
Introduction Pregnant women with covid-19 are more likely to experience preterm birth. The virus seems to be associated with a wide range of placental lesions, none of them specific. Method We collected cases of Covid-19 maternal infection during pregnancy associated with poor pregnancy outcomes, for which we received the placenta. We studied clinical data and described pathological findings of placenta and post-mortem examination of fetuses. We performed an immunohistochemical study and RT-PCR of SARS-Cov-2 on placenta samples. Results We report 5 cases of poor fetal outcome, 3 fetal deaths and 2 extreme premature neonates, one with growth restriction, without clinical and biological sign of SARS-Cov-2 infection. All placenta presented massive perivillous fibrin deposition and large intervillous thrombi associated with strong SARS-Cov-2 expression in trophoblast and SARS-CoV-2 PCR positivity in amniotic fluid or on placenta samples. Chronic histiocytic intervillositis was present in 4/5 cases. Placental ultrasound was abnormal and the sFLT1-PIGF ratio was increased in one case. Timing between mothers’ infection and the poor fetal outcome was ≤10 days in 4 cases. The massive placental damage are directly induced by the virus whose receptors are expressed on trophoblast, leading to trophoblast necrosis and massive inflammation in villous chamber, in a similar way it occurs in diffuse alveolar damage in adults infected by SARS-Cov-2. Discussion SARS-Cov-2 can be associated to a rare set of placental lesions which can lead to fetal demise, preterm birth, or growth restriction. Stronger surveillance of mothers infected by SARS-Cov-2 is required.
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Affiliation(s)
- Amine Bouachba
- Institut de Pathologie Multisite des Hospices Civils de Lyon, 69677, Bron Cedex, Lyon, France; SOFFOET-Société Française de Fœtopathologie, 75014, Paris, France.
| | - Fabienne Allias
- SOFFOET-Société Française de Fœtopathologie, 75014, Paris, France; Institut de Pathologie, Centre hospitalier Lyon Sud, Hospices Civils de Lyon, 69495, Pierre Bénite, Lyon, France
| | - Beatrice Nadaud
- Institut de Pathologie Multisite des Hospices Civils de Lyon, 69677, Bron Cedex, Lyon, France; SOFFOET-Société Française de Fœtopathologie, 75014, Paris, France
| | - Jerome Massardier
- SOFFOET-Société Française de Fœtopathologie, 75014, Paris, France; Service de gynécologie-obstétrique de l'Hôpital Femme-Mère-Enfant, Hospices Civils de Lyon, 69677, Bron Cedex, Lyon, France
| | - Yahia Mekki
- Institut des Agents Infectieux des Hospices Civils de Lyon, Service de Virologie, 69004, Lyon, France
| | - Maude Bouscambert Duchamp
- Institut des Agents Infectieux des Hospices Civils de Lyon, Service de Virologie, 69004, Lyon, France
| | - Benoit De LA Fourniere
- Service de Gynécologie-obstétrique de La Croix-Rousse, Hospices Civils de Lyon, 69004, Lyon, France
| | - Cyril Huissoud
- Service de Gynécologie-obstétrique de La Croix-Rousse, Hospices Civils de Lyon, 69004, Lyon, France; Université Claude Bernard Lyon 1, Faculté de Médecine Lyon Est, 69008, France
| | - Alexis Trecourt
- Institut de Pathologie Multisite des Hospices Civils de Lyon, 69677, Bron Cedex, Lyon, France
| | - Sophie Collardeau-Frachon
- Institut de Pathologie Multisite des Hospices Civils de Lyon, 69677, Bron Cedex, Lyon, France; SOFFOET-Société Française de Fœtopathologie, 75014, Paris, France; Université Claude Bernard Lyon 1, Faculté de Médecine Lyon Est, 69008, France
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Grünewald M, Häge E, Lehnert S, Maier C, Schimke A, Bramlage P, Güth M. Prophylactic Anticoagulation With Intermediate-Dose Certoparin in Vascular-Risk Pregnancies-The PACER-VARP Registry. Clin Appl Thromb Hemost 2021; 27:10760296211016550. [PMID: 34027682 PMCID: PMC8150601 DOI: 10.1177/10760296211016550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The management of pregnant women at increased risk of thromboembolic/other vascular events is still a matter of debate. In a single-center, retrospective, observational trial, we analyzed the safety and efficacy of prophylactic anticoagulation with certoparin in pregnant women at intermediate- or high-risk by EThIG criteria of thromboembolic/other vascular events. Subcutaneous certoparin 8,000 IU once daily was administered immediately after pregnancy confirmation and continued for 6 weeks postpartum. We investigated 74 pregnancies (49 women; mean age 31.8 years; weight 77.3 kg). Most prevalent risk factors were factor V Leiden mutation (40.5%), thrombogenic factor II mutation (12.2%) and protein S deficiency (8.1%). In 76 control pregnancies prior to registry inclusion/without anticoagulation there were 14 cases [18.4%] of venous thromboembolism (between week 7 gestation and week 8 postpartum); 63.2% pregnancies resulted in abortion (median week 8.6 gestation). With certoparin anticoagulation, thromboembolism was 1.4%, exclusively non-major bleeding was 4.1% and abortion was 10.8%. One case of pre-eclampsia necessitating obstetric intervention occurred. Prophylactic anticoagulation with intermediate-dose certoparin throughout pregnancies at increased venous vascular risk was safe and effective.
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Affiliation(s)
- Martin Grünewald
- Department of Medicine I, Klinikum Heidenheim, Heidenheim, Germany
| | - Esther Häge
- Department of Medicine I, Klinikum Heidenheim, Heidenheim, Germany
| | | | | | | | - Peter Bramlage
- Institute for Pharmacology and Preventive Medicine, Cloppenburg, Germany
| | - Martina Güth
- Department of Medicine I, Klinikum Heidenheim, Heidenheim, Germany
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Methodology for Biometrical Analysis of the Placenta: Feasibility and Reproducibility. Reprod Sci 2021; 28:1277-1280. [PMID: 33709374 DOI: 10.1007/s43032-021-00463-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 01/06/2021] [Indexed: 11/26/2022]
Abstract
The role of a healthy placenta as the interface between mother and fetus, which regulates the intrauterine environment and affects fetal and pregnancy outcomes, points to placental examination as a potentially useful diagnostic tool. Placental macroscopic and microscopic patterns are routinely evaluated when pregnancy complications occur. Moreover, placental measures particularly the ratio between fetal and placental weight have been reported to correlate with maternal characteristics, such as BMI as well as with birth-weight and fetal gender. Our pilot study evaluates the feasibility of the placental measures' reproducibility intra-operators. We enrolled 50 consecutive singleton pregnancies including physiological pregnancies and any pre-existing maternal disease or maternal and fetal complication. We conducted a macroscopic analysis of fetal adnexa with four different operators assessing pathological findings or other abnormalities. Intra-class correlation coefficient (ICC) and Cohen and Fleiss kappa coefficient were used to assess the degree of consistency between operators. The results of our study show that the placental morphometric analysis is a reproducible method.
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Jaiswal N, Puri M, Agarwal K, Singh S, Yadav R, Tiwary N, Tayal P, Vats B. COVID-19 as an independent risk factor for subclinical placental dysfunction. Eur J Obstet Gynecol Reprod Biol 2021; 259:7-11. [PMID: 33556768 PMCID: PMC7845516 DOI: 10.1016/j.ejogrb.2021.01.049] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 01/21/2021] [Accepted: 01/26/2021] [Indexed: 12/26/2022]
Abstract
Background The pandemic of the severe acute respiratory distress syndrome-associated Coronavirus-2 (SARS-CoV-2) has affected millions around the world. In pregnancy the dangers to the mother and fetus are still being explored. SARS-CoV2 can potentially compromise maternal and neonatal outcomes and this may be dependent on the pregnancy stage during which the infection occurs. Objective The present study was done to find the histopathological alterations in the placenta of SARS-CoV-2 positive pregnancies with either no symptoms or mild coronavirus disease (COVID)-19 related symptoms and its association with neonatal outcomes. Study design This was a prospective analytical study. Twenty seven asymptomatic or mildly symptomatic SARS-CoV-2 positive pregnant women with a singleton pregnancy delivered between 1st July 2020 and 15th September 2020, were included as cases. An equal number of SARS-CoV-2 negative singleton pregnancies matched for maternal and gestational age during the same period were included as controls. After delivery the histopathological examination of the placenta of these women was done and the findings recorded on a predesigned proforma based on the Amsterdam consensus criteria for evidence of maternal and fetal vascular malperfusion changes. Results The baseline characteristics were comparable between the cases and controls. The following features of maternal vascular malperfusion (MVM) were significantly higher in the placentae of COVID-19 positive pregnancies: retroplacental hematomas (RPH), accelerated villous maturation (AVM), distal villous hyperplasia (DVH), atherosis, fibrinoid necrosis, mural hypertrophy of membrane arterioles (MHMA), vessel ectasia and persistence of intramural endovascular trophoblast (PIEVT). Fetal vascular malperfusion (FVM) significantly associated with the positive pregnancies were chorioangiosis, thrombosis of the fetal chorionic plate (TFCP), intramural fibrin deposition (IMFD) and vascular ectasia. Additionally, perivillous fibrin deposition was also significantly higher in the placentae of cases. The percentage of spontaneously delivered women was comparable in the two groups. The sex and weight of the newborn and the number of live births were comparable between the two groups. Conclusions Asymptomatic or mildly symptomatic SARS-CoV-2 positive pregnant women, with otherwise uncomplicated pregnancies, show evidence of placental injury at a microscopic level. Similar findings have been demonstrated in other studies too. This placental injury apparently does not lead to poor pregnancy outcomes. The extent of this injury in symptomatic cases of COVID-19 pregnancies and its consequences on the outcomes need to be analysed.
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Affiliation(s)
- Nishtha Jaiswal
- Department of Obstetrics and Gynecology, Smt Sucheta Kriplani Hospital and Lady Hardinge Medical College, New Delhi, India.
| | - Manju Puri
- Department of Obstetrics and Gynecology, Smt Sucheta Kriplani Hospital and Lady Hardinge Medical College, New Delhi, India
| | - Kiran Agarwal
- Department of Pathology, Lady Hardinge Medical College, New Delhi, India
| | - Smita Singh
- Department of Pathology, Lady Hardinge Medical College, New Delhi, India
| | - Reena Yadav
- Department of Obstetrics and Gynecology, Smt Sucheta Kriplani Hospital and Lady Hardinge Medical College, New Delhi, India
| | - Narendra Tiwary
- Department of Biostatistics, RG Kar Medical College, Kolkata, India
| | - Prerna Tayal
- Department of Obstetrics and Gynecology, Smt Sucheta Kriplani Hospital and Lady Hardinge Medical College, New Delhi, India
| | - Barkha Vats
- Department of Obstetrics and Gynecology, Smt Sucheta Kriplani Hospital and Lady Hardinge Medical College, New Delhi, India
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Shiro M, Yamamoto R, Ichikawa C, Nakanishi K, Kawaguchi H, Hayashi S, Takeuchi M, Ishii K. Placental histopathological features of fetoscopic laser photocoagulation for monoaminotic diamniotic twin pregnancies. Placenta 2020; 100:159-163. [PMID: 32980047 DOI: 10.1016/j.placenta.2020.07.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Revised: 06/08/2020] [Accepted: 07/06/2020] [Indexed: 11/24/2022]
Abstract
INTRODUCTION This study aimed to compare the histopathological placental features of monochorionic diamniotic (MCDA) twins who did and did not undergo fetoscopic laser photocoagulation (FLP). METHODS This was a retrospective single-institution cohort study on MCDA twins who underwent FLP between October 2010 and December 2018. The control group included MCDA twins who did not undergo FLP and were delivered during the same period in the institute. The incidence of chorioamnionitis (CAM), funisitis, and other pathological findings was compared between the FLP and control groups after matching by gestational age at delivery. RESULTS In total, 292 MCDA pregnant women who underwent FLP and 356 controls gave birth during the study period. After matching the two groups in the ratio 1:1 by gestational age at delivery, each group comprised 194 subjects. The incidence of histological CAM with Blanc association (stage I, 6.2% vs. 3.1%, crude odds ratio (cOR) = 3.1, P = 0.052; stage II, 7.2% vs. 5.7%, cOR = 1.6, P = 0.30; stage III, 2.1% vs. 2.6%, cOR = 0.66, P = 0.52) and funisitis (artery, 5.2% vs. 3.6%, cOR = 1.3, P = 0.63; vein 7.2% vs. 4.1%, cOR = 1.6, P = 0.29) was not statistically significant difference between the FLP and control groups. The FLP group demonstrated a higher incidence of partial placental infarction than the control group (10.3% vs. 3.1%, cOR = 4.3, P = 0.004, adjusted OR = 2.8, P = 0.031). DISCUSSION FLP did not appear to increase the incidence of histological CAM or funisitis in subjects matched by gestational age at delivery. The FLP group demonstrated a higher incidence of partial placental infarction than the control group.
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Affiliation(s)
- Michihisa Shiro
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Ryo Yamamoto
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Chihiro Ichikawa
- Department of Pathology, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Kentaro Nakanishi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Haruna Kawaguchi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Shusaku Hayashi
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Makoto Takeuchi
- Department of Pathology, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan
| | - Keisuke Ishii
- Department of Maternal Fetal Medicine, Osaka Women's and Children's Hospital, 840, Murodo, Izumi, Osaka, 594-1101, Japan.
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Brosens I, Puttemans P, Benagiano G. Placental bed research: I. The placental bed: from spiral arteries remodeling to the great obstetrical syndromes. Am J Obstet Gynecol 2019; 221:437-456. [PMID: 31163132 DOI: 10.1016/j.ajog.2019.05.044] [Citation(s) in RCA: 181] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 05/03/2019] [Accepted: 05/20/2019] [Indexed: 12/11/2022]
Abstract
The term placental bed was coined to describe the maternal-fetal interface (ie, the area in which the placenta attaches itself to the uterus). Appropriate vascularization of this area is of vital importance for the development of the fetus; this is why systematic investigations of this area have now been carried out. Initially, the challenge was the identification and classification of the various successive branching of uterine arteries in this area. These vessels have a unique importance because failure of their physiological transformation is considered to be the anatomical basis for reduced perfusion to the intervillous space in women with preeclampsia, fetal growth restriction, preterm labor, preterm premature rupture of membranes, abruptio placentae, and fetal death. To investigate in depth the pathophysiology of the placental bed, some 60 years ago, a large number of placental bed biopsies, as well as of cesarean hysterectomy specimens with placenta in situ, from both early and late normotensive and hypertensive pregnancies, were carefully dissected and analyzed. Thanks to the presence of a series of specific physiological changes, characterized by the invasion and substitution of the arterial intima by trophoblast, this material allowed the identification in the placental bed of normal pregnancies of the main vessels, the uteroplacental arteries. It was then discovered that preeclampsia is associated with defective or absent transformation of the myometrial segment of the uteroplacental arteries. In addition, in severe hypertensive disease, atherosclerotic lesions were also found in the defective myometrial segment. Finally, in the basal decidua, a unique vascular lesion, coined acute atherosis, was also identified This disorder of deep placentation, coined defective deep placentation, has been associated with the great obstetrical syndromes, grouping together preeclampsia, intrauterine growth restriction, preterm labor, preterm premature rupture of membranes, late spontaneous abortion, and abruptio placentae. More recently, simplified techniques of tissue sampling have been also introduced: decidual suction allows to obtain a large number of decidual arteries, although their origin in the placental bed cannot be determined. Biopsies parallel to the surface of the basal plate have been more interesting, making possible to identify the vessels' region (central, paracentral, or peripheral) of origin in the placental bed and providing decidual material for immunohistochemical studies. Finally, histochemical and electron microscopy investigations have now clarified the pathology and pathogenetic mechanisms underlying the impairment of the physiological vascular changes.
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Prell RA, Dybdal N, Arima A, Chihaya Y, Nijem I, Halpern W. Placental and Fetal Effects of Onartuzumab, a Met/HGF Signaling Antagonist, When Administered to Pregnant Cynomolgus Monkeys. Toxicol Sci 2019; 165:186-197. [PMID: 29893934 DOI: 10.1093/toxsci/kfy141] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Onartuzumab is an engineered single arm, monovalent monoclonal antibody that targets the MET receptor and prevents hepatocyte growth factor (HGF) signaling. Knockout mice have clearly demonstrated that HGF/MET signaling is developmentally critical. A pre- and postnatal development study (enhanced design) was conducted in cynomolgus monkeys to evaluate the potential developmental consequences following onartuzumab administration. Control or onartuzumab, at loading/maintenance doses of 75/50 mg/kg (low) or 100/100 mg/kg (high), was administered intravenously once weekly to 12 confirmed pregnant female cynomolgus monkeys per group from gestation day (GD) 20 through GD 174. Onartuzumab administration resulted in decreased gestation length, decreased birth weight, and increased fetal and perinatal mortality. A GD147 C-section was conducted for a subset of Control and High Dose monkeys, and identified placental infarcts with hemorrhage in the chorionic plate, chorionic villus and/or decidual plate. These findings were limited to placentas from onartuzumab-treated animals. In addition, decreased cellularity of the hepatocytes with dilated hepatic sinusoids was inconsistently observed in the liver of a few fetal or infant monkeys that died in the perinatal period. Surviving offspring had some evidence of developmental delay compared with controls, but no overt teratogenicity. Overall, effects on the perinatal fetuses were consistent with those reported in knockout mice, but not as severe. Onartuzumab concentrations were low or below the level of detection in most offspring, with cord blood concentrations only 1%-2% of maternal levels on GD 147. Malperfusion secondary to onartuzumab-induced placental injury could explain the adverse pregnancy outcomes, fetal growth restriction and relatively low fetal exposures.
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Affiliation(s)
- Rodney A Prell
- Department of Safety Assessment, Genentech, South San Francisco, California 94080
| | - Noel Dybdal
- Department of Safety Assessment, Genentech, South San Francisco, California 94080
| | - Akihiro Arima
- Shin Nippon Biomedical Laboratories, Ltd, Kagoshima 891-1394, Japan
| | - Yutaka Chihaya
- Shin Nippon Biomedical Laboratories, Ltd., Atsubetsu-ku, Sapporo, Hokkaido 004-0071, Japan
| | - Ihsan Nijem
- Bioanalytical Sciences/Assay Development and Technology, Genentech, South San Francisco, California 94080
| | - Wendy Halpern
- Department of Safety Assessment, Genentech, South San Francisco, California 94080
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11
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Stanek J. Histological Features of Shallow Placental Implantation Unify Early-Onset and Late-Onset Preeclampsia. Pediatr Dev Pathol 2019; 22:112-122. [PMID: 30301442 DOI: 10.1177/1093526618803759] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Preeclampsia is distinguishable from other hypertensive conditions of pregnancy by its high rates of decidual arteriopathy, the uterine type of chronic hypoxic placental injury, the occurrence of villous infarctions, and clusters of multinucleate trophoblasts in the maternal floor. To retrospectively study the clinical and placental phenotypes of 230 women with early-onset preeclampsia, 261 women with late-onset preeclampsia, and 5059 women without hypertension in pregnancy (comparative group), 24 clinical and 46 placental phenotypes were statistically compared (analysis of variance, χ2 with Bonferroni correction). The frequency of decidual arteriopathy (both hypertrophic and atherosis), patterns of chronic hypoxic placental injury, villous infarction, membrane laminar necrosis, membrane microscopic chorionic pseudocysts, clusters of maternal floor multinucleated trophoblasts, excessive number of extravillous trophoblasts, and intervillous thrombi was strikingly higher in both late-onset preeclampsia and early-onset preeclampsia than in the comparative group without hypertension in pregnancy. All 3 patterns of chronic hypoxic placental injury were 2- to 3-fold more common in preeclampsia. Although the preuterine pattern was as common in early-onset preeclampsia as it was in late-onset preeclampsia, the postuterine pattern was 2-fold more common in early-onset preeclampsia, and chronic villitis of unknown etiology was more common in late-onset preeclampsia than in the other 2 groups. Features of shallow placental implantation occurred at the same frequency in early-onset preeclampsia as in late-onset preeclampsia, which reflects an underlying common pathological mechanism in both subgroups of preeclampsia, while hypoxic lesions and patterns of placental injury were more common in early-onset preeclampsia than in late-onset preeclampsia, which correlates with more severe clinical outcomes of the former.
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Affiliation(s)
- Jerzy Stanek
- 1 Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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12
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Neville G, Russell N, O'Donoghue K, Fitzgerald B. Rounded intraplacental hematoma - A high risk placental lesion as illustrated by a prospective study of 26 consecutive cases. Placenta 2019; 81:18-24. [PMID: 31138427 DOI: 10.1016/j.placenta.2019.02.011] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 01/23/2019] [Accepted: 02/21/2019] [Indexed: 11/15/2022]
Abstract
BACKGROUND A rounded intraplacental hematoma (RIH) is a recently delineated placental lesion. Following the observation of two cases of RIH in placentas associated with stillbirth in 2012, we postulated that RIHs were associated with a higher risk obstetric phenotype when compared to other lesions characteristic of maternal vascular malperfusion (MVM). We aimed to investigate this further by reviewing the associated maternal and fetal characteristics in a series of prospectively identified cases. METHODS Pregnancies where a RIH was identified on placental examination were prospectively collected from February 2014-July 2016. Comparison was made with pregnancies with placental evidence of MVM but without RIH. RESULTS 26 placentas with a RIH were identified and 26 placentas with MVM were selected for comparison. There was a statistically significantly increased incidence of stillbirth in the RIH group as compared with the MVM-only group (p = 0.022). Also, pregnancies with RIHs had a lower maternal age (p = 0.041), decreased incidence of antenatally diagnosed growth restriction (p = 0.023), a trend to increased incidence of clinical abruption (p = 0.051) and heavier mean infant birthweight (p = 0.034). Both groups had a high incidence of pre-eclampsia, Caesarean section and preterm delivery when compared with the general population. DISCUSSION This is the first study to prospectively identify and collect RIHs using standardised pathological criteria and more than doubles the number of reported cases to date. We present 2 comparable, high-risk cohorts but with a significantly increased incidence of stillbirth in those in which RIHs were seen. Further study of these lesions is justified with an emphasis on the potential for antenatal detection using ultrasound evaluation of placental texture.
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Affiliation(s)
- Grace Neville
- Department of Pathology, Cork University Hospital, Cork, Ireland.
| | - Noirin Russell
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, Cork, Ireland.
| | - Keelin O'Donoghue
- Department of Obstetrics and Gynaecology, Cork University Maternity Hospital, Cork, Ireland.
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13
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Sotiriadis A, Hernandez-Andrade E, da Silva Costa F, Ghi T, Glanc P, Khalil A, Martins WP, Odibo AO, Papageorghiou AT, Salomon LJ, Thilaganathan B. ISUOG Practice Guidelines: role of ultrasound in screening for and follow-up of pre-eclampsia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2019; 53:7-22. [PMID: 30320479 DOI: 10.1002/uog.20105] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 07/15/2018] [Accepted: 07/22/2018] [Indexed: 06/08/2023]
Affiliation(s)
- A Sotiriadis
- Second Department of Obstetrics and Gynecology, Faculty of Medicine, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - E Hernandez-Andrade
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, Hutzel Women Hospital, Wayne State University, Detroit, MI, USA
| | - F da Silva Costa
- Department of Gynecology and Obstetrics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, São Paulo, Brazil; and Department of Obstetrics and Gynaecology, Monash University, Melbourne, Australia
| | - T Ghi
- Obstetrics and Gynecology Unit, University of Parma, Parma, Italy
| | - P Glanc
- Department of Radiology, University of Toronto, Toronto, Ontario, Canada
| | - A Khalil
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, London, UK; and Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
| | - W P Martins
- SEMEAR Fertilidade, Reproductive Medicine and Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil
| | - A O Odibo
- Department of Obstetrics and Gynecology, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - A T Papageorghiou
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, London, UK; and Nuffield Department of Obstetrics and Gynecology, University of Oxford, Women's Center, John Radcliffe Hospital, Oxford, UK
| | - L J Salomon
- Department of Obstetrics and Fetal Medicine, Hopital Necker-Enfants Malades, Assistance Publique-Hopitaux de Paris, Paris Descartes University, Paris, France
| | - B Thilaganathan
- Fetal Medicine Unit, St George's University Hospitals NHS Foundation Trust, London, UK; and Vascular Biology Research Centre, Molecular and Clinical Sciences Research Institute, St George's University of London, London, UK
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Burton GJ, Jauniaux E. Pathophysiology of placental-derived fetal growth restriction. Am J Obstet Gynecol 2018; 218:S745-S761. [PMID: 29422210 DOI: 10.1016/j.ajog.2017.11.577] [Citation(s) in RCA: 502] [Impact Index Per Article: 83.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Revised: 11/13/2017] [Accepted: 11/13/2017] [Indexed: 01/03/2023]
Abstract
Placental-related fetal growth restriction arises primarily due to deficient remodeling of the uterine spiral arteries supplying the placenta during early pregnancy. The resultant malperfusion induces cell stress within the placental tissues, leading to selective suppression of protein synthesis and reduced cell proliferation. These effects are compounded in more severe cases by increased infarction and fibrin deposition. Consequently, there is a reduction in villous volume and surface area for maternal-fetal exchange. Extensive dysregulation of imprinted and nonimprinted gene expression occurs, affecting placental transport, endocrine, metabolic, and immune functions. Secondary changes involving dedifferentiation of smooth muscle cells surrounding the fetal arteries within placental stem villi correlate with absent or reversed end-diastolic umbilical artery blood flow, and with a reduction in birthweight. Many of the morphological changes, principally the intraplacental vascular lesions, can be imaged using ultrasound or magnetic resonance imaging scanning, enabling their development and progression to be followed in vivo. The changes are more severe in cases of growth restriction associated with preeclampsia compared to those with growth restriction alone, consistent with the greater degree of maternal vasculopathy reported in the former and more extensive macroscopic placental damage including infarcts, extensive fibrin deposition and microscopic villous developmental defects, atherosis of the spiral arteries, and noninfectious villitis. The higher level of stress may activate proinflammatory and apoptotic pathways within the syncytiotrophoblast, releasing factors that cause the maternal endothelial cell activation that distinguishes between the 2 conditions. Congenital anomalies of the umbilical cord and placental shape are the only placental-related conditions that are not associated with maldevelopment of the uteroplacental circulation, and their impact on fetal growth is limited.
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15
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Chaiworapongsa T, Romero R, Erez O, Tarca AL, Conde-Agudelo A, Chaemsaithong P, Kim CJ, Kim YM, Kim JS, Yoon BH, Hassan SS, Yeo L, Korzeniewski SJ. The prediction of fetal death with a simple maternal blood test at 20-24 weeks: a role for angiogenic index-1 (PlGF/sVEGFR-1 ratio). Am J Obstet Gynecol 2017; 217:682.e1-682.e13. [PMID: 29037482 PMCID: PMC5951183 DOI: 10.1016/j.ajog.2017.10.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2017] [Revised: 09/29/2017] [Accepted: 10/01/2017] [Indexed: 12/13/2022]
Abstract
BACKGROUND Fetal death is an obstetrical syndrome that annually affects 2.4 to 3 million pregnancies worldwide, including more than 20,000 in the United States each year. Currently, there is no test available to identify patients at risk for this pregnancy complication. OBJECTIVE We sought to determine if maternal plasma concentrations of angiogenic and antiangiogenic factors measured at 24-28 weeks of gestation can predict subsequent fetal death. STUDY DESIGN A case-cohort study was designed to include 1000 randomly selected subjects and all remaining fetal deaths (cases) from a cohort of 4006 women with a singleton pregnancy, enrolled at 6-22 weeks of gestation, in a pregnancy biomarker cohort study. The placentas of all fetal deaths were histologically examined by pathologists who used a standardized protocol and were blinded to patient outcomes. Placental growth factor, soluble endoglin, and soluble vascular endothelial growth factor receptor-1 concentrations were measured by enzyme-linked immunosorbent assays. Quantiles of the analyte concentrations (or concentration ratios) were estimated as a function of gestational age among women who delivered a live neonate but did not develop preeclampsia or deliver a small-for-gestational-age newborn. A positive test was defined as analyte concentrations (or ratios) <2.5th and 10th centiles (placental growth factor, placental growth factor/soluble vascular endothelial growth factor receptor-1 [angiogenic index-1] and placental growth factor/soluble endoglin) or >90th and 97.5th centiles (soluble vascular endothelial growth factor receptor-1 and soluble endoglin). Inverse probability weighting was used to reflect the parent cohort when estimating the relative risk. RESULTS There were 11 fetal deaths and 829 controls with samples available for analysis between 24-28 weeks of gestation. Three fetal deaths occurred <28 weeks and 8 occurred ≥28 weeks of gestation. The rate of placental lesions consistent with maternal vascular underperfusion was 33.3% (1/3) among those who had a fetal death <28 weeks and 87.5% (7/8) of those who had this complication ≥28 weeks of gestation. The maternal plasma angiogenic index-1 value was <10th centile in 63.6% (7/11) of the fetal death group and in 11.1% (92/829) of the controls. The angiogenic index-1 value was <2.5th centile in 54.5% (6/11) of the fetal death group and in 3.7% (31/829) of the controls. An angiogenic index-1 value <2.5th centile had the largest positive likelihood ratio for predicting fetal death >24 weeks (14.6; 95% confidence interval, 7.7-27.7) and a relative risk of 29.1 (95% confidence interval, 8.8-97.1), followed by soluble endoglin >97.5th centile and placental growth factor/soluble endoglin <2.5th, both with a positive likelihood ratio of 13.7 (95% confidence interval, 7.3-25.8) and a relative risk of 27.4 (95% confidence interval, 8.2-91.2). Among women without a fetal death whose plasma angiogenic index-1 concentration ratio was <2.5th centile, 61% (19/31) developed preeclampsia or delivered a small-for-gestational-age neonate; when the 10th centile was used as the cut-off, 37% (34/92) of women had these adverse outcomes. CONCLUSION (1) A maternal plasma angiogenic index-1 value <2.5th centile (0.126) at 24-28 weeks of gestation carries a 29-fold increase in the risk of subsequent fetal death and identifies 55% of subsequent fetal deaths with a false-positive rate of 3.5%; and (2) 61% of women who have a false-positive test result will subsequently experience adverse pregnancy outcomes.
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Affiliation(s)
- Tinnakorn Chaiworapongsa
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Roberto Romero
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, University of Michigan, Ann Arbor, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI; Center for Molecular Medicine and Genetics, Wayne State University, Detroit, MI.
| | - Offer Erez
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI; Department of Obstetrics and Gynecology, Soroka University Medical Center, School of Medicine, Faculty of Health Sciences, Ben-Gurion University of the Negev, Beersheba, Israel
| | - Adi L Tarca
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Agustin Conde-Agudelo
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI
| | - Piya Chaemsaithong
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Chong Jai Kim
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Pathology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Yeon Mee Kim
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Pathology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Republic of Korea
| | - Jung-Sun Kim
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Bo Hyun Yoon
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sonia S Hassan
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Lami Yeo
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI
| | - Steven J Korzeniewski
- Perinatology Research Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development/National Institutes of Health/Department of Health and Human Services, Bethesda, MD, and Detroit, MI; Department of Obstetrics and Gynecology, Wayne State University School of Medicine, Detroit, MI; Department of Epidemiology and Biostatistics, Michigan State University, East Lansing, MI
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Placental pathology varies in hypertensive conditions of pregnancy. Virchows Arch 2017; 472:415-423. [DOI: 10.1007/s00428-017-2239-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 09/20/2017] [Accepted: 09/25/2017] [Indexed: 10/18/2022]
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