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Stuijt DG, Bos M, Nikkels PGJ, Wolterbeek R, van der Meeren LE. Significant association between circumvallate placenta, placental abruption and acute chorioamnionitis in preterm birth: A 23-year retrospective cohort study. Placenta 2024; 146:25-29. [PMID: 38160600 DOI: 10.1016/j.placenta.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Revised: 11/28/2023] [Accepted: 12/14/2023] [Indexed: 01/03/2024]
Abstract
AIM circumvallate placenta, placental abruption and acute chorioamnionitis separately are associated with unfavourable clinical outcomes. We aimed to determine the prevalence and define whether an association exists between the three abnormalities. METHODS 16,042 placenta pathology reports between 1997 and 2020 from a tertiary care centre in the Netherlands were retrospectively analysed. For the statistical analysis, the chi-square test and bootstrapping were used to evaluate an association. RESULTS In our cohort the prevalence of circumvallate placenta is 2.2 %, placental abruption cases 4.0 % and acute chorioamnionitis 20.6 %. We observed a statistically significant association between all three placental abnormalities: circumvallate placenta, placental abruption and acute chorioamnionitis. In addition, there was also an association between circumvallate placenta and acute chorioamnionitis. CONCLUSION Our results show that combined presence of circumvallate placenta, placental abruption and acute chorioamnionitis are associated in preterm birth (p = 0.001). A remarkable finding is that the combination of all three abnormalities (circumvallate placenta, placental abruption and acute chorioamnionitis) was not observed in term pregnancies >37 weeks.
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Affiliation(s)
- D G Stuijt
- Department of Pathology, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands
| | - M Bos
- Department of Pathology, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands; Department of Obstetrics and Gynaecology, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands
| | - P G J Nikkels
- Department of Pathology, University Medical Centre Utrecht, Utrecht, the Netherlands
| | - R Wolterbeek
- Department of Biomedical Data Sciences, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands
| | - L E van der Meeren
- Department of Pathology, Leiden University Medical Centre, 2333 ZA, Leiden, the Netherlands; Department of Pathology, Erasmus Medical Centre, Rotterdam, the Netherlands.
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Mboya IB, Mahande MJ, Obure J, Mwambi HG. Predictors of singleton preterm birth using multinomial regression models accounting for missing data: A birth registry-based cohort study in northern Tanzania. PLoS One 2021; 16:e0249411. [PMID: 33793638 PMCID: PMC8016309 DOI: 10.1371/journal.pone.0249411] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 03/18/2021] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Preterm birth is a significant contributor of under-five and newborn deaths globally. Recent estimates indicated that, Tanzania ranks the tenth country with the highest preterm birth rates in the world, and shares 2.2% of the global proportion of all preterm births. Previous studies applied binary regression models to determine predictors of preterm birth by collapsing gestational age at birth to <37 weeks. For targeted interventions, this study aimed to determine predictors of preterm birth using multinomial regression models accounting for missing data. METHODS We carried out a secondary analysis of cohort data from the KCMC zonal referral hospital Medical Birth Registry for 44,117 women who gave birth to singletons between 2000-2015. KCMC is located in the Moshi Municipality, Kilimanjaro region, northern Tanzania. Data analysis was performed using Stata version 15.1. Assuming a nonmonotone pattern of missingness, data were imputed using a fully conditional specification (FCS) technique under the missing at random (MAR) assumption. Multinomial regression models with robust standard errors were used to determine predictors of moderately to late ([32,37) weeks of gestation) and very/extreme (<32 weeks of gestation) preterm birth. RESULTS The overall proportion of preterm births among singleton births was 11.7%. The trends of preterm birth were significantly rising between the years 2000-2015 by 22.2% (95%CI 12.2%, 32.1%, p<0.001) for moderately to late preterm and 4.6% (95%CI 2.2%, 7.0%, p = 0.001) for very/extremely preterm birth category. After imputation of missing values, higher odds of moderately to late preterm delivery were among adolescent mothers (OR = 1.23, 95%CI 1.09, 1.39), with primary education level (OR = 1.28, 95%CI 1.18, 1.39), referred for delivery (OR = 1.19, 95%CI 1.09, 1.29), with pre-eclampsia/eclampsia (OR = 1.77, 95%CI 1.54, 2.02), inadequate (<4) antenatal care (ANC) visits (OR = 2.55, 95%CI 2.37, 2.74), PROM (OR = 1.80, 95%CI 1.50, 2.17), abruption placenta (OR = 2.05, 95%CI 1.32, 3.18), placenta previa (OR = 4.35, 95%CI 2.58, 7.33), delivery through CS (OR = 1.16, 95%CI 1.08, 1.25), delivered LBW baby (OR = 8.08, 95%CI 7.46, 8.76), experienced perinatal death (OR = 2.09, 95%CI 1.83, 2.40), and delivered male children (OR = 1.11, 95%CI 1.04, 1.20). Maternal age, education level, abruption placenta, and CS delivery showed no statistically significant association with very/extremely preterm birth. The effect of (<4) ANC visits, placenta previa, LBW, and perinatal death were more pronounced on the very/extremely preterm compared to the moderately to late preterm birth. Notably, extremely higher odds of very/extreme preterm birth were among the LBW babies (OR = 38.34, 95%CI 31.87, 46.11). CONCLUSIONS The trends of preterm birth have increased over time in northern Tanzania. Policy decisions should intensify efforts to improve maternal and child care throughout the course of pregnancy and childbirth towards preterm birth prevention. For a positive pregnancy outcome, interventions to increase uptake and quality of ANC services should also be strengthened in Tanzania at all levels of care, where several interventions can easily be delivered to pregnant women, especially those at high-risk of experiencing adverse pregnancy outcomes.
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Affiliation(s)
- Innocent B. Mboya
- School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
- Department of Epidemiology and Biostatistics, Institute of Public Health, Kilimanjaro Christian Medical University College, Moshi, Tanzania
- * E-mail:
| | - Michael J. Mahande
- Department of Obstetrics and Gynecology, Kilimanjaro Christian Medical Center, Moshi, Tanzania
| | - Joseph Obure
- Department of Obstetrics and Gynecology, Kilimanjaro Christian Medical Center, Moshi, Tanzania
| | - Henry G. Mwambi
- School of Mathematics, Statistics and Computer Science, University of KwaZulu-Natal, Pietermaritzburg, South Africa
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Affiliation(s)
- Pradip Dashraath
- National University Health System, Yong Loo Lin School of Medicine, Singapore, Singapore
| | - Yee-Chee Wong
- National University Health System, Yong Loo Lin School of Medicine, Singapore, Singapore
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Castillo MM, Yang Q, Sigala AS, McKinney DT, Zhan M, Chen KL, Jarzembowski JA, Sood R. The endothelial protein C receptor plays an essential role in the maintenance of pregnancy. Sci Adv 2020; 6:6/45/eabb6196. [PMID: 33158859 PMCID: PMC7673707 DOI: 10.1126/sciadv.abb6196] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 09/22/2020] [Indexed: 06/11/2023]
Abstract
Placenta-mediated pregnancy complications are a major challenge in the management of maternal-fetal health. Maternal thrombophilia is a suspected risk factor, but the role of thrombotic processes in these complications has remained unclear. Endothelial protein C receptor (EPCR) is an anticoagulant protein highly expressed in the placenta. EPCR autoantibodies and gene variants are associated with poor pregnancy outcomes. In mice, fetal EPCR deficiency results in placental failure and in utero death. We show that inhibition of molecules involved in thrombin generation or in the activation of maternal platelets allows placental development and embryonic survival. Nonetheless, placentae exhibit venous thrombosis in uteroplacental circulation associated with neonatal death. In contrast, maternal EPCR deficiency results in clinical and histological features of placental abruption and is ameliorated with concomitant Par4 deficiency. Our findings unveil a causal link between maternal thrombophilia, uterine hemorrhage, and placental abruption and identify Par4 as a potential target of therapeutic intervention.
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Affiliation(s)
- Michelle M Castillo
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Qiuhui Yang
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Abril Solis Sigala
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Dosia T McKinney
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Min Zhan
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Kristen L Chen
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Jason A Jarzembowski
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA
| | - Rashmi Sood
- Division of Pediatric Pathology, Department of Pathology, Medical College of Wisconsin, Milwaukee, WI, USA.
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Hosier H, Farhadian SF, Morotti RA, Deshmukh U, Lu-Culligan A, Campbell KH, Yasumoto Y, Vogels CB, Casanovas-Massana A, Vijayakumar P, Geng B, Odio CD, Fournier J, Brito AF, Fauver JR, Liu F, Alpert T, Tal R, Szigeti-Buck K, Perincheri S, Larsen C, Gariepy AM, Aguilar G, Fardelmann KL, Harigopal M, Taylor HS, Pettker CM, Wyllie AL, Cruz CD, Ring AM, Grubaugh ND, Ko AI, Horvath TL, Iwasaki A, Reddy UM, Lipkind HS. SARS-CoV-2 infection of the placenta. J Clin Invest 2020; 130:4947-4953. [PMID: 32573498 PMCID: PMC7456249 DOI: 10.1172/jci139569] [Citation(s) in RCA: 318] [Impact Index Per Article: 79.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/10/2020] [Indexed: 12/13/2022] Open
Abstract
BACKGROUNDThe effects of the novel coronavirus disease 2019 (COVID-19) in pregnancy remain relatively unknown. We present a case of second trimester pregnancy with symptomatic COVID-19 complicated by severe preeclampsia and placental abruption.METHODSWe analyzed the placenta for the presence of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) through molecular and immunohistochemical assays and by and electron microscopy and measured the maternal antibody response in the blood to this infection.RESULTSSARS-CoV-2 localized predominantly to syncytiotrophoblast cells at the materno-fetal interface of the placenta. Histological examination of the placenta revealed a dense macrophage infiltrate, but no evidence for the vasculopathy typically associated with preeclampsia.CONCLUSIONThis case demonstrates SARS-CoV-2 invasion of the placenta, highlighting the potential for severe morbidity among pregnant women with COVID-19.FUNDINGBeatrice Kleinberg Neuwirth Fund and Fast Grant Emergent Ventures funding from the Mercatus Center at George Mason University. The funding bodies did not have roles in the design of the study or data collection, analysis, and interpretation and played no role in writing the manuscript.
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MESH Headings
- Abortion, Therapeutic
- Abruptio Placentae/etiology
- Abruptio Placentae/pathology
- Abruptio Placentae/virology
- Adult
- Betacoronavirus/genetics
- Betacoronavirus/isolation & purification
- Betacoronavirus/pathogenicity
- COVID-19
- Coronavirus Infections/complications
- Coronavirus Infections/pathology
- Coronavirus Infections/virology
- Female
- Humans
- Microscopy, Electron, Transmission
- Pandemics
- Phylogeny
- Placenta/pathology
- Placenta/virology
- Pneumonia, Viral/complications
- Pneumonia, Viral/pathology
- Pneumonia, Viral/virology
- Pre-Eclampsia/etiology
- Pre-Eclampsia/pathology
- Pre-Eclampsia/virology
- Pregnancy
- Pregnancy Complications, Infectious/etiology
- Pregnancy Complications, Infectious/pathology
- Pregnancy Complications, Infectious/virology
- Pregnancy Trimester, Second
- RNA, Viral/genetics
- RNA, Viral/isolation & purification
- SARS-CoV-2
- Viral Load
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Affiliation(s)
- Hillary Hosier
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | | | - Uma Deshmukh
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | | | - Yuki Yasumoto
- Department of Comparative Medicine, Yale School of Medicine
| | - Chantal B.F. Vogels
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | | | | | - Bertie Geng
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | - John Fournier
- Section of Infectious Diseases, Department of Medicine
| | - Anderson F. Brito
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | - Joseph R. Fauver
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | | | - Tara Alpert
- Department of Molecular Biophysics and Biochemistry, Yale University, New Haven, Connecticut, USA
| | - Reshef Tal
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | | | | | | | | | | | | | - Hugh S. Taylor
- Department of Obstetrics, Gynecology, and Reproductive Sciences
| | | | - Anne L. Wyllie
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | - Charles Dela Cruz
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, Yale School of Medicine, Yale University, New Haven, Connecticut, USA
| | | | - Nathan D. Grubaugh
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | - Albert I. Ko
- Department of Epidemiology of Microbial Diseases, Yale School of Public Health, and
| | | | | | - Uma M. Reddy
- Department of Obstetrics, Gynecology, and Reproductive Sciences
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Gaiday AN, Tussupkaliyev AB, Bermagambetova SK, Zhumagulova SS, Sarsembayeva LK, Dossimbetova MB, Daribay ZZ. Effect of homocysteine on pregnancy: A systematic review. Chem Biol Interact 2018; 293:70-76. [PMID: 30053452 DOI: 10.1016/j.cbi.2018.07.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 07/19/2018] [Accepted: 07/23/2018] [Indexed: 11/17/2022]
Abstract
Research purpose was to put together the available pieces of present scientific data and to close the gap in the knowledge of Hcy levels in pregnancy and its association with some pregnancy complications. Scientific data were taken from research papers published between January 1990 and December 2017, and found on the Internet (PubMed, ClinicalKey and Embase databases) by the following tags entered in English, Russian, French and German languages: pregnancy, homocysteine, pregnancy complications, pregnancy loss, preeclampsia, intrauterine growth restriction, and placental abruption. The review showed that Hcy levels range in uncomplicated pregnancy. Upon that, Hcy level tends to decrease during the second and third trimesters. Some studies have revealed a link between polymorphism and abortion. Sufficient data were obtained indicating the relationship between HHcy and PE. Placental abruption was also associated with high Hcy levels increasing the risk 5.3-fold, but still there are data not supporting the hypothesis that Hcy levels correlate with placental abruption.
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Affiliation(s)
- Andrey N Gaiday
- West-Kazakhstan Marat Ospanov State Medical University, Aktobe, Kazakhstan
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7
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Brăila AD, Gluhovschi A, Neacşu A, Lungulescu CV, Brăila M, Vîrcan EL, Cotoi BV, Gogănău AM. Placental abruption: etiopathogenic aspects, diagnostic and therapeutic implications. Rom J Morphol Embryol 2018; 59:187-195. [PMID: 29940627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The severe form of retroplacental hematoma is a serious accident in the second stage of pregnancy and at birth with frightening for the mother and fetus that often lead to death. The pathological mechanism presumes conditions for a "special ground" capital for the "efficiency" of the acute intradecidual vascular accident with the rupture of the uterus-placental arterioles. The complete clinical picture of this severe form of retroplacental hematoma - the placental abruption, observed and mentioned by the classics (vascular drama of Couvelaire) consists of five syndromes, 18 signs and symptoms, four paradoxes, phenomena not fully met in the other forms of retroplacental hematoma (minor and intermediate). The rate of incidence of retroplacental hematoma is in between 0.13-1.38% and depends on the environment, on the socio-economic and medical conditions, on the "obstetric education" and associated pathology. Our study aims at re-evaluating the clinico-paraclinical phenomenon imposed by the dramatism of the phenomenon of in utero placental apoplexy, the impact on neonatal mortality and on the functional prognosis from the point of view of surgical climax.
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Affiliation(s)
- Anca Daniela Brăila
- Department of Obstetrics and Gynecology, Faculty of Midwifery and Nursing, "Carol Davila" University of Medicine and Pharmacy, Bucharest, Romania; ; Department of Family Medicine, Faculty of Midwifery and Nursing, University of Medicine and Pharmacy of Craiova, Romania;
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Abstract
Chronic abruption-oligohydramnios sequence (CAOS), characterized by chronic vaginal hemorrhage and oligohydramnios, is a rare clinical condition of pregnancy. Because CAOS is associated with preterm delivery and lung injury to the infant, it is a major clinical concern. This report describes three CAOS cases which presented characteristic MRI findings reflecting CAOS pathological mechanisms and pathological findings. First, in all cases, the placenta detached from the uterus at the peripheral portion of the placenta because of placental marginal hematoma. Because the cause of CAOS is presumed to be chronic peripheral separation of the placenta developing from bleeding from the peripheral vein of the placenta, the MRI finding corresponds to the CAOS pathophysiology. Second, the placental marginal hematoma spread extensively along the decidua. This MRI finding can explain the vaginal hemorrhage of CAOS patients. Finally, the amniotic fluid of all patients showed high signal intensity on T1-weighted images, suggesting that amniotic fluid contains blood-derived products. In CAOS patients, chronic venous bleeding engenders the release of blood-derived products into the amniotic cavity. The aspiration of these products might be a cause of lung injury to the fetus. We presented these MRI findings with radiologic-pathologic correlation.
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Affiliation(s)
- Yasuhisa Kurata
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyoku, Kyoto, Japan
| | - Aki Kido
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyoku, Kyoto, Japan.
| | - Sachiko Minamiguchi
- Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyoku, Kyoto, Japan
| | - Eiji Kondoh
- Department of Gynecology and Obstetrics, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyoku, Kyoto, Japan
| | - Kaori Togashi
- Department of Diagnostic Imaging and Nuclear Medicine, Kyoto University Graduate School of Medicine, 54 Kawahara-cho, Shogoin, Sakyoku, Kyoto, Japan
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9
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Martingano D, Aglialoro GC. Abruptio Placentae. J Osteopath Med 2017; 117:404. [PMID: 28556865 DOI: 10.7556/jaoa.2017.081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Heller DS, Keane-Tarchichi M, Varshney S. Is pathologic confirmation of placental abruption more reliable in cases due to chronic etiologies compared with acute etiologies? J Perinat Med 2013; 41:701-3. [PMID: 23828421 DOI: 10.1515/jpm-2013-0064] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 05/21/2013] [Indexed: 11/15/2022]
Abstract
BACKGROUND Pathology laboratories often receive requests for confirmation of abruption; however, pathologically, abruption can only be confirmed by the presence of adherent blood clot on the maternal surface that is indenting the underlying placental parenchyma. DESIGN We evaluated whether abruptions due to more chronic underlying medical conditions are more likely to have a retained indenting retroplacental clot that is detectable by the pathologist than abruptions due to acute etiologies. This was a retrospective review from January 1995 to June 2012 of cases with a clinical and/or pathologic diagnosis of abruption. Data were analyzed utilizing Fisher's exact test. RESULTS Ninety-six cases had sufficient available information for analysis. There was a significant association between pathologic identification of abruption and chronic risk factors (P=0.03). Twenty-five percent of cases with acute risk factors and 60% of cases with chronic risk factors had abruption confirmed at pathologic evaluation (P=0.12). CONCLUSION Pathologically confirmable abruption is associated with chronic risk factors. There was a trend towards chronic risk factors leading to greater likelihood of pathologic confirmation of abruption than acute risk factors, but it did not reach statistical significance.
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Lockwood CJ, Paidas M, Murk WK, Kayisli UA, Gopinath A, Huang SJ, Krikun G, Schatz F. Involvement of human decidual cell-expressed tissue factor in uterine hemostasis and abruption. Thromb Res 2009; 124:516-20. [PMID: 19720393 DOI: 10.1016/j.thromres.2009.07.017] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2009] [Revised: 07/06/2009] [Accepted: 07/07/2009] [Indexed: 11/15/2022]
Abstract
Vascular injury increases access and binding of plasma-derived factor VII to perivascular cell membrane-bound tissue factor (TF). The resulting TF/VIIa complex promotes hemostasis by cleaving pro-thrombin to thrombin leading to the fibrin clot. In human pregnancy, decidual cell-expressed TF prevents decidual hemorrhage (abruption). During placentation, trophoblasts remodel decidual spiral arteries into high conductance vessels. Shallow trophoblast invasion impedes decidual vascular conversion, producing an inadequate uteroplacental blood flow that elicits abruption-related placental ischemia. Thrombin induces several biological effects via cell surface protease activated receptors. In first trimester human DCs thrombin increases synthesis of sFlt-1, which elicits placental ischemia by impeding angiogenesis-related decidual vascular remodeling. During pregnacy, the fibrillar collagen-rich amnion and choriodecidua extracellular matrix (ECM) provides greater than additive tensile strength and structural integrity. Thrombin acts as an autocrine/paracrine mediator that degrades these ECMs by augmenting decidual cell expression of: 1) matrix metalloproteinases and 2) interleukin-8, a key mediator of abruption-associated decidual infiltration of neutrophils, which express several ECM degrading proteases. Among the cell types at the maternal fetal interface at term, TF expression is highest in decidual cells indicating that this TF meets the hemostatic demands of labor and delivery. TF expression in cultured term decidual cells is enhanced by progestin and thrombin suggesting that the maintenance of elevated circulating progesterone provides hemostatic protection and that abruption-generated thrombin acts in an autocrine/paracrine fashion on decidual cells to promote hemostasis via enhanced TF expression.
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Affiliation(s)
- C J Lockwood
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale University School of Medicine, 333 Cedar St., New Haven, CT 06520, USA
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Staribratova D, Milchev N. [Placental chorangiosis associated with abruption and hypoxia]. Akush Ginekol (Sofiia) 2009; 48:44-46. [PMID: 20198798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Chorangiosis is a rare abnormality of placental capillary proliferation, associated with hypoxia in utero. A 23-year-old primigravida developed placental abruption at 33 weeks' gestation, and an emergency cesarean section was performed. Placental histology revealed chorangiosis. The infant was in critical state and died on the next day. Our case confirms that perinatal mortality can be associated with chorangiosis. This diagnosis should be considered especially when no other significant obstetric incident is identified. Placentas should be monitored for placental abruption, a known consequence of chorangiosis.
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Cheng WW, Lin SQ. [Analysis of risk factors for uteroplacental apoplexy complicating placental abruption]. Zhonghua Fu Chan Ke Za Zhi 2008; 43:593-596. [PMID: 19087494] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVE To study the clinical characteristics, the outcome of pregnancy and the risk factors of uteroplacental apoplexy complicating severe placental abruption. METHODS A retrospectively study of the 52 cases of placental abruption who had delivered in our hospital from Jan. 2002 to Dec. 2006 was conducted. These cases were divided into 2 groups: 17 cases of uteroplacental apoplexy complicating placental abruption as observation group, the others with no uteroplacental apoplexy as control group. The risk factors of disease, clinical characteristics and the outcome of pregnancy between the two groups were compared. RESULTS (1) The incidence of placental abruption was 0.15% (52/35 049) among the total deliveries patients with uteroplacental apoplexy complicating placental abruption took up 0.05% (17/35 049) of all deliveries and 33% (17/52) of all abruption cases. (2) General information and delivery: There were no significant differences (P > 0.05) regarding their mean age and BMI in two groups. All women in observation group had C-section delivery, which were 21 in control group. 14 women had vaginal delivery. The incidence of premature labour was 88% (15/17) in observation group, and 49% (17/35) women in control group delivered after 37 weeks. Significant differences were observed regarding delivery methods and gestational weeks (P < 0.01). (3) RISK FACTORS: the incidence of preeclampsia, 71% (12/17), and the duration of disease, 6.4 hours, in observation group were more than those in control group, 20% (7/35) and 4.2 hours (P < 0.01). There were no significant differences between two groups in premature rupture, polyhydroamnions (P > 0.05). (4) Clinical characteristics in two groups: bloody amniotic fluid, fetal distress, hematometra and postpartum hemorrhage occurred in 82% (14/17) vs 26% (9/35), 65% (11/17) vs 29% (10/35), 35% (6/17) vs 6% (2/35), and 59% (10/17) vs 11% (4/35), with a significant difference (P < 0.01), but no statistical difference existed between indices such as abdominal pain, vaginal bleeding and abdominal tension (P > 0.05). (5) Placenta sites and abruption areas: placenta sites were distributed from anterior or posterior of uterine body 5/17 vs 24/35, the fundus or cornu of uterus 12/17 vs 11/35 (P < 0.01). All cases in observation group presented abruption areas > 1/3, and 9 cases >or= 2/3, 27 cases abruption areas < 1/3 and 8 cases abruption areas 1/3 - 2/3 in control group (P < 0.01). (6) Other complications and outcome: Hemorrhagic shock 3 vs 0, DIC 3 vs 0, hysterectomy 1 vs 0, intrauterine fetal death 3 vs 2, neonatal asphyxia 8 vs 5 and neonatal death 1 vs 0. There were significant differences (P < 0.01) between the two groups. CONCLUSIONS Preeclampsia, long duration of disease and fundal or cornual placenta a risk factors for uteroplacental apoplexy complicating placental abruption, which may lead to a poor maternal-fetal prognosis.
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Affiliation(s)
- Wei-Wei Cheng
- Department of Obstetrics, Affiliated International Peace Maternity and Child Health Hospital, Shanghai Jiaotong University Medical College, Shanghai 200030, China.
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Cavkaytar S, Ugurlu EN, Karaer A, Tapisiz OL, Danisman N. Are clinical symptoms more predictive than laboratory parameters for adverse maternal outcome in HELLP syndrome? Acta Obstet Gynecol Scand 2007; 86:648-51. [PMID: 17520393 DOI: 10.1080/00016340601185384] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND To determine the risk factors for adverse maternal outcome among women with HELLP syndrome. METHODS Sixty-one pregnancies with hemolysis, elevated liver enzymes and low platelet count (HELLP) syndrome diagnosed antenatally were reviewed between 2003 and 2005. Maternal outcomes analyzed included eclampsia, abruptio placentae, disseminated intravascular coagulopathy (DIC), acute renal failure, need for transfusion of blood products, cesarean delivery and maternal death. Risk factors included maternal age, parity, gestational age at diagnosis, mean arterial blood pressure, headache, visual changes, nausea-vomiting, epigastric pain, blood platelet count (<or=50,000 versus >50,000 cells/mm3), and peak serum levels of aspartate aminotransferase. RESULTS Eclampsia was present in 52%, abruptio placentae in 11%, and DIC in 8% of 61 women with HELLP syndrome. 23% women required transfusion of blood products, 15% had acute renal failure, and 73% had cesarean section. Women with eclampsia had significantly more headache, nausea-vomiting, visual changes and epigastric pain (p<0.05). Transfusion was significantly more frequent among women with blood platelet counts <or=50,000 cells/mm3 (33 versus 21%; p<0.05). Women with a platelet count <or=50,000 cells/mm3 had a higher rate of DIC compared to women with a platelet count >50,000 cells/mm3 (33.3 versus 3.8%; p<0.05). In women with acute renal failure and abruptio placentae, there were no significant differences in all the variables studied between those with and without these complications. CONCLUSIONS Clinical symptoms, such as headache, visual changes, epigastric pain and nausea-vomiting, are more predictive than laboratory parameters for adverse maternal outcomes.
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Affiliation(s)
- Sabri Cavkaytar
- Department of Obstetrics and Gynecology, Dr. Zekai Tahir Burak Woman Health Education and Research Hospital, Ankara, Turkey.
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15
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Kaminsky LM, Ananth CV, Prasad V, Nath CA, Vintzileos AM. The influence of maternal cigarette smoking on placental pathology in pregnancies complicated by abruption. Am J Obstet Gynecol 2007; 197:275.e1-5. [PMID: 17826418 PMCID: PMC2175535 DOI: 10.1016/j.ajog.2007.06.026] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2007] [Revised: 05/11/2007] [Accepted: 06/14/2007] [Indexed: 11/28/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate the effect of maternal cigarette smoking on placental histology in women with abruption. STUDY DESIGN Data were derived from the New Jersey-Placental Abruption Study (NJ-PAS)--an ongoing, case-control study, conducted since August 2002 in 2 large hospitals in NJ. Abruption cases were identified based on a clinical diagnosis. Histologic evaluations were performed by 2 perinatal pathologists who were blinded to the abruption status. Maternal smoking during pregnancy was determined based on patient's self-report. Among abruption cases, histologic findings were compared between smokers and nonsmokers, and the association expressed as odds ratio (OR) with 95% confidence interval (CI). All analyses were adjusted for potential confounders. RESULTS A total of 189 abruption cases were available for analysis, of which 10.6% (n = 20) were smokers. Intervillous thrombus was more common in women who smoked (20%) than in nonsmokers (3.0%) (OR, 17.5; 95% CI, 3.1-99.4). However, placental infarcts were seen less frequently among smokers than nonsmokers (10.0% vs 32.5%; OR, 0.2; 95% CI, 0.1-0.8). CONCLUSION These findings suggest that different pathologic mechanisms may be responsible for the histologic findings between smokers and nonsmokers diagnosed with placental abruption.
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Affiliation(s)
- Lilian M. Kaminsky
- Division of Maternal Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ
| | - Cande V. Ananth
- Division of Epidemiology and Biostatistics, Department of Obstetrics, Gynecology and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ
| | - Vinay Prasad
- Department of Pathology, University of Arkansas Medical School, Little Rock, AK
| | - Carl A. Nath
- Division of Maternal Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ
| | - Anthony M. Vintzileos
- Division of Maternal Fetal Medicine, Department of Obstetrics, Gynecology and Reproductive Sciences, UMDNJ-Robert Wood Johnson Medical School, New Brunswick, NJ
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16
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Usta IM, Maarouf HH, Nassar AH. Correlation between placental pathology and obstetric complications. Int J Gynaecol Obstet 2007; 99:143-4. [PMID: 17628560 DOI: 10.1016/j.ijgo.2007.05.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 05/09/2007] [Accepted: 05/11/2007] [Indexed: 10/23/2022]
Affiliation(s)
- I M Usta
- Department of Obstetrics and Gynecology, American University of Beirut Medical Center, Beirut, Lebanon
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Shen O, Golomb E, Lavie O, Goldberg Y, Eitan R, Rabinowitz RR. Placental shelf - a common, typically transient and benign finding on early second-trimester sonography. Ultrasound Obstet Gynecol 2007; 29:192-4. [PMID: 17091529 DOI: 10.1002/uog.3860] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
OBJECTIVE Placental shelves are believed to represent circumvallate placentae. It is thought that circumvallate placenta may be associated with adverse perinatal outcome when present at delivery. The objective of this study was to determine the prevalence, persistence and significance of placental shelves detected in the early second trimester. METHODS In 152 consecutive anomaly scans performed between 13 and 16 weeks of gestation, special attention was directed to placental structure and the presence of a placental shelf. When present, a mid-gestation scan was performed to verify if the finding persisted. If so, a third-trimester scan was performed. Delivery charts were reviewed for all cases initially diagnosed with a placental shelf, recording any placenta-related complications. RESULTS In 17 of 152 (11.2%) early second-trimester scans a placental shelf was detected. In three of these 17 cases the shelf persisted to the 20-22-week scan. In the two cases that presented for the third-trimester scan the shelf was no longer present. In all 17 cases the perinatal outcome was good. CONCLUSIONS In our study group early second-trimester placental shelves rarely persisted to mid-gestation and never to the third trimester. There were no placenta-related perinatal problems. Early second-trimester placental shelf appears to be a common, benign and transient sonographic finding.
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Affiliation(s)
- O Shen
- Department of Obstetrics and Gynecology, Shaare Zedek Medical Center, Jerusalem, affiliated to Faculty of Health Sciences, Ben-Gurion University of Negev, Be'er Sheva, Israel.
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18
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Burke CJ, Tannenberg AET. Intrapartum stillbirths in hospital unrelated to uteroplacental vascular insufficiency. Pediatr Dev Pathol 2007; 10:35-40. [PMID: 17378621 DOI: 10.2350/06-02-0042.1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2006] [Accepted: 07/18/2006] [Indexed: 11/20/2022]
Abstract
The aim of this study was to investigate the causes of intrapartum asphyxia and its relationship to placental abnormalities. Twenty intrapartum fetal death autopsies carried out over a 10-year period in one hospital pathology department associated with a large obstetric unit were reviewed. All the intrapartum fetal deaths occurred in the hospital, while the mothers were being monitored during and after labor. On morphologic grounds, all the fetal deaths were thought to be caused by intrapartum asphyxia. Seven of the intrapartum fetal deaths were associated with intrauterine infection causing funisitis, and in 6 of these cases, chorioamnionitis was present as well. Two cases were caused by placental abruption, and 1 case was caused by cord compression. In 8 of the 10 remaining cases in which the placenta was examined, a minor placental abnormality was detected in only 1 case. Five of the 10 cases had a mild astrocytosis in the intracerebral periventricular white matter, suggestive of intrauterine ischemia at least 12 hours before death. Five of the 10 cases were thought by the delivering obstetrician to have umbilical cord abnormalities. The main conclusions from this study are that, except in cases of intrauterine infection, placental vascular abnormalities are unlikely to be associated with intrapartum asphyxia leading to fetal death during labor. The number of cases with umbilical cord abnormalities raises the possibility that cord accidents may be a significant cause of intrapartum stillbirth.
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Abstract
OBJECTIVE To examine the neuropathology of fetuses dying before birth, to determine the timing of any brain damage seen and to ascertain clinical associations of pre-existing brain damage. DESIGN Population-based observational study. SETTING All 22 delivery units within Scotland, 1995-1998. SAMPLE All stillborn fetuses > or =24 weeks of gestation excluding those with chromosomal abnormality or central nervous system/cardiothoracic malformation. METHODS Clinical detail was collected on all stillborn fetuses. Requests for postmortem included separate request for detailed neuropathological examination. Stillborn fetuses were classified as full term antepartum (normal growth/growth restricted), preterm antepartum (normal growth/growth restricted), intrapartum (full term/preterm), multiple births and stillborn fetuses following abruptions. Clinicopathological correlation attempted to define the timing of brain insult. Placentas were examined for each case where available. MAIN OUTCOME MEASURES Presence of established and/or recent brain damage. RESULTS Clinical details were available for 471 stillborn fetuses, and detailed neuropathology was possible in 191 cases. Of these 191, 13 were multiple births, 9 died following abruption, 12 were intrapartum deaths and 157 were antepartum stillborn fetuses (99 preterm and 58 full term). Recent or established brain damage was seen in 66% of the entire cohort. Thirty-five percent of all cases showed well-established hypoxic damage predating the last evidence of fetal life, and this was more common in preterm fetuses (P = 0.015), those fetuses with evidence of recent damage (P < 0.001), in pregnancies complicated by pregnancy-induced hypertension (P = 0.044) and those in whom the placenta was <10th centile (P = 0.002). CONCLUSIONS Brain damage is commonly seen in stillborn infants, and in around one-third of cases, damage predates the period immediately before death. Factors suggesting suboptimal placental function are associated with such damage. Early identification of placental impairment may lead to improved pregnancy outcome.
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Affiliation(s)
- J-C Becher
- Department of Child Life and Health, University of Edinburgh, Edinburgh, Scotland, UK
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20
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Milovanov AP, Kornilova NK, Fadeev AS, Fedorova MV. [Uterine pathomorphology in abruptio placentae]. Arkh Patol 2006; 68:25-7. [PMID: 16544532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
15 uteri removed surgically because of abruptio placentae (AP) were studied morphologically. AP develops as a process due to a combination of maternal (endometritis, gestosis, adenomyosis), placental (pathology of microvilli, hypercoagulation of venous blood) and hemorheological (thrombosis of placental bed veins, partial blockade of venous circulation) factors. These factors result in the formation of retroplacental hematoma and progressing intrauterine fetal hypoxia.
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Barini R, Barreto MWG, Cursino K, Zambelli H, Prando A, Sbragia L. Abruptio Placentae during Fetal Myelomeningocele Repair. Fetal Diagn Ther 2005; 21:115-7. [PMID: 16354988 DOI: 10.1159/000089060] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2004] [Accepted: 01/07/2005] [Indexed: 11/19/2022]
Abstract
Myelomeningocele (MM) is a congenital neural tube defect with serious consequences, including hydrocephaly. An important hope for intrauterine repair is that hydrocephaly may be prevented by reversing the Arnold-Chiari malformation. Three medical centers in the United States are doing trials with this objective. We describe an intrauterine correction of MM in a Brazilian research center of fetal medicine, which resulted in abruptio placentae and fetal death, to illustrate factors that influence fetal-maternal risks during this surgical procedure.
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Affiliation(s)
- Ricardo Barini
- Department of Surgery, Faculdade de Ciências Médicas, Division of Pediatric Surgery and Maternal Fetal Medicine, State University of Campinas, UNICAMP, Campinas, Brazil
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22
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Lockwood CJ, Toti P, Arcuri F, Paidas M, Buchwalder L, Krikun G, Schatz F. Mechanisms of abruption-induced premature rupture of the fetal membranes: thrombin-enhanced interleukin-8 expression in term decidua. Am J Pathol 2005; 167:1443-9. [PMID: 16251427 PMCID: PMC1603775 DOI: 10.1016/s0002-9440(10)61230-8] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/14/2005] [Indexed: 11/15/2022]
Abstract
Recent evidence has linked preterm premature rupture of the fetal membranes (PPROM) to placental abruption. Because neutrophils are a rich source of proteases that can degrade extracellular matrix in abruption-associated PPROM, we examined whether decidual neutrophil infiltration complicates abruption-associated PPROM. Accordingly, immunostaining for the neutrophil marker CD15 was performed in placentas obtained after overt abruption (decidual hemorrhage) with or without PPROM and in control placentas. Abruptions were associated with a marked decidual neutrophil infiltration that peaked after PPROM, whereas decidua from gestational age-matched controls were virtually devoid of neutrophils. Neutrophil infiltrates co-localized with fibrin deposition. Because abruptions elicit intense decidua-enhanced thrombin production, we examined the regulation of abruption-induced neutrophil infiltration. Expression of the primary neutrophil chemoattractant interleukin-8 (IL-8) was evaluated in leukocyte-free term decidual cells incubated with estradiol (E2; control) or with E2+medroxyprogesterone acetate (to mimic pregnancy)+/-thrombin. After 24 hours, enzyme-linked immunosorbent assay measurements indicated that thrombin (0.1 to 2.5 U/ml) elicited a dose-dependent elevation in secreted IL-8 (P<0.05) with 2.5 U/ml of thrombin increasing IL-8 levels by >14-fold in E2 and E2+medroxyprogesterone incubations. Results were validated by Western blot and quantitative reverse transcriptase-polymerase chain reaction. In summary, thrombin-enhanced IL-8 expression in term decidual cells may explain how abruption-associated PPROM promotes decidual neutrophil infiltration.
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Affiliation(s)
- Charles J Lockwood
- Department of Obstetrics, Gynecology, and Reproductive Sciences, Yale University School of Medicine, 333 Cedar St., PO Box 208063, Room 334FMB, New Haven, CT 06520-8063, USA.
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23
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Lindqvist PG, Happach C. Risk and risk estimation of placental abruption. Eur J Obstet Gynecol Reprod Biol 2005; 126:160-4. [PMID: 16202500 DOI: 10.1016/j.ejogrb.2005.08.003] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2005] [Revised: 06/14/2005] [Accepted: 08/01/2005] [Indexed: 10/25/2022]
Abstract
OBJECTIVE Several variables related to increased risk of placental abruption are also risk factors for venous thromboembolism. Prior second trimester-, third trimester, and repeated fetal loss are reported to be associated to thrombophilias. However, it is yet not known if they are also related to placental abruption. STUDY DESIGN A retrospective case-control study of 161 women with placental abruption and 2371 unselected gravidae without placental abruption. The medical files were scrutinized and the selected variables were investigated in relation to the development of placental abruption. RESULTS As compared to controls, previous second trimester-, third trimester-, repeated fetal loss, and prior placental abruption were related to a 3-, 13-, 3-, and a 25-fold increased risk of placental abruption, respectively. Several other factors were associated with a roughly three-fold increased risk such as: preeclampsia, IUGR, high maternal age (>35), family history of venous thromboembolism, smoking, and multiple birth. A risk score was created and as compared with those with no risk factors present, the risk of placental abruption was increasing from 2.5-fold for those with risk score=1, to almost 100-fold for risk score 4 or above. CONCLUSION Easily obtainable information might be used to classify the risk of placental abruption.
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Affiliation(s)
- Pelle G Lindqvist
- Institution of Clinical Science, Department of Obstetrics and Gynecology, Lund University, Malmö University Hospital, 20502 Malmö, Se, Sweden.
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24
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Abstract
At an incidence of 3.2-4% world-wide, pregnancy-induced hypertension (PIH) is the most common disease of pregnancy. Since this holds a risk, not only for the mother, but also for the child, the placenta should undergo pathological-anatomical examination in every case. Pathomorphological findings can be described in the feto-maternal border zone as well as in the fetal placenta. These are not, however, specific, nor do they offer diagnostic proof. Pathomorphological findings in the feto-maternal border zone: defective invasion of the extravillous cytotrophoblast, hyperplastic arterio-/arteriolopathy, acute atherosclerosis, and fibrinoid necrosis of endothelium. Disorders of the fetal part of placenta: infarctions/fibrin deposits, obliterative angiopathy, stromal fibrosis/fibrinoid degeneration, syncytiotrophoblastic nodes (Tenney-Parker-phenomenon), and disturbances of maturation of the villi. There is a general lack of correlation between the seriousness of the disease and the morphology. The only exception in this respect are the findings in the vessels both of the placental bed and of the chronic villi. These show a high correlation with doppler sonographic findings.
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Affiliation(s)
- H Müntefering
- Abteilung für Kinderpathologie, Klinikum der Johannes Gutenberg-Universität Mainz.
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25
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Jääskeläinen E, Toivonen S, Romppanen EL, Helisalmi S, Keski-Nisula L, Punnonen K, Heinonen S. M385T polymorphism in the factor V gene, but not Leiden mutation, is associated with placental abruption in Finnish women. Placenta 2004; 25:730-4. [PMID: 15450391 DOI: 10.1016/j.placenta.2004.02.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/04/2004] [Indexed: 11/29/2022]
Abstract
This study determines whether genetic variability in the gene encoding factor V contributes to differences in susceptibility to placental abruption. Allele and genotype frequencies of three single nucleotide polymorphisms (SNPs) in the factor V gene leading to nonsynonymous changes (M385T in exon 8, and R485K and R506Q [Leiden mutation] in exon 10) were studied in 116 Caucasian women with placental abruption and 112 healthy controls. Single-point analysis was expanded to haplotype analysis and haplotype frequencies were estimated using an expectation-maximisation (EM) algorithm. Comparison of single-point allele and genotype distributions of SNPs in exon 8 and exon 10 of the factor V gene revealed statistically significant differences in M385T allele (P = 0.021) and genotype ( P = 0.013) frequencies between the patients and the control subjects. The C allele of SNP M385T was significantly less frequent among the patients (7%) vs. the control subjects (13%), at an odds ratio of 0.48 (95% CI 0.25-0.91). Allele and genotype differences between the patients and control subjects as regards R485K and Leiden mutation were not significant. In haplotype estimation analysis, there was a significantly lower frequency of haplotype T-R-R encoding the T385-R485-R506 variant in the group with placental abruption vs. the control group (P = 0.038) at an odds ratio of 0.519 (95% CI 0.272-0.987). We conclude that T385 is less frequent among the patient group than in the control group. The M385T variant in the factor V gene other than the Leiden mutation may play a role in disease susceptibility.
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Affiliation(s)
- E Jääskeläinen
- Department of Obstetrics and Gynecology, Kuopio University Hospital, 70211 Kuopio, Finland
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26
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Abstract
Hypercoagulability leading to placental thrombosis has been implicated in severe pregnancy complications. We compared the perinatal outcome in women with severe preeclampsia, intrauterine growth retardation (IUGR) and severe abruptio placentae and multiple acquired and inherited thrombophilias (study group, n=22) to matched women with similar complications and single thrombophilia (control group, n=22). Gestational age at delivery and birth weight were significantly lower in the study group compared to the control group (p<0.01) and among the study women with severe preeclampsia and IUGR. Severe pregnancy complications may occur earlier during pregnancy and more seriously affect perinatal outcome in women with multiple thrombophilias.
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Affiliation(s)
- Michael J Kupferminc
- Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, Tel-Aviv, Israel.
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Ruffatti A, Chiarelli S, Favaro M, Borghi MO, Casonato A, Tonello M, Todesco S. Could placental abruption be an antiphospholipid antibody related disorder? Clin Exp Rheumatol 2004; 22:380-1. [PMID: 15144143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
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Moldenhauer JS, Stanek J, Warshak C, Khoury J, Sibai B. The frequency and severity of placental findings in women with preeclampsia are gestational age dependent. Am J Obstet Gynecol 2003; 189:1173-7. [PMID: 14586374 DOI: 10.1067/s0002-9378(03)00576-3] [Citation(s) in RCA: 253] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The purpose of this study was to evaluate placental lesions found in women with preeclampsia compared with normotensive control subjects and to determine whether the presence of these lesions are related to gestational age at delivery. STUDY DESIGN Placental disease of women with preeclampsia at 24 to 42 weeks of gestation was compared with the placental disease of normotensive gestational age-matched control subjects. The placental lesions that were studied specifically included decidual arteriolopathy, thrombi in the fetal circulation, central infarction, intervillous thrombi, and hypermaturity of villi. Data analysis involved the chi(2) test, the Student t test, and logistic regression; odds ratios and CIs were estimated. RESULTS Placentas from women with preeclampsia (n=158) and normotensive control subjects (n=156) were evaluated. Among women with preeclampsia, 67% had severe disease. Placental lesions were studied according to gestational age at delivery: <28, 28 to 32, 33 to 36, and >or=37 weeks of gestation. Of the placental lesions that were studied, decidual arteriolopathy (odds ratio, 23.8, 95% CI 10.0-57.0), hypermaturity of villi (odds ratio, 12.4; 95% CI 5.3-29.2), intervillous thrombi (odds ratio, 1.95;95% CI 1.0-3.7), central infarction (odds ratio, 5.9; 95% CI 3.1-11.1), and thrombi in the fetal circulation (odds ratio, 2.8; 95% CI 1.2-6.6) were found to have significantly higher rates in the preeclamptic group. In contrast, the rate of chorioamnionitis was significantly lower in the preeclamptic group (odds ratio, 0.2; 95% CI 0.1-0.4). The rates of abruptio placentae and meconium staining were not different between the two groups. Within the preeclamptic group, the rates of decidual arteriolopathy (P<.0001), central infarction (P=.0001), and hypermaturity of villi (P<.0001) were higher the earlier the gestational age at delivery. CONCLUSION Placentas in women with preeclampsia have increased amounts of disease. The rate is increased with lower gestational ages at the time of delivery for women with preeclampsia.
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Affiliation(s)
- Julie S Moldenhauer
- Department of Obstetrics and Gynecology, University of Cincinnati Medical Center, Cincinnati, Ohio, USA
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29
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Anisimova IN, Zhestkova IV. [Pathomorphological changes in the uterine wall in gestosis]. Lik Sprava 2002:36-40. [PMID: 12587302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/20/2023]
Abstract
With the purpose of studying a morphological substrate of the uterine contractile function disorder in gestosis, an investigation was conducted designed to study biopsy specimens of the uterine wall having been taken during the cesarean section in 80 parturient women. The womb of those parturient women having mild and severe gestosis complicated by uterine inertia (40 observations) or premature dethachement of the normally situated placenta (8 cases) was studied together with that of controls (32 cases). The indentified micro-circulatory disturbances and alterative changes in the myometrium structures in gestosis are regarded as one of the generalized blood circulation disorders, hemostasis (dissaminated intravascular blood coagulation) and systemic abnormalities of metabolism presenting as a multiorgan failure developing in the pathology under consideration. Microcirculatory disturbances and hypoxia-related dystrophic changes in the smooth myoblasts and connective tissue leading to its fibrosis--all these constitute a morphological substrate of changes in the contractile function of the womb.
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Abstract
Placental abruption is an uncommon obstetric complication associated with high perinatal mortality rates. The authors explored the associations of abruption with fetal growth restriction, preterm delivery, and perinatal survival. The study was based on 7,508,655 singleton births delivered in 1995 and 1996 in the United States. Abruption was recorded in 6.5 per 1,000 births. Perinatal mortality was 119 per 1,000 births with abruption compared with 8.2 per 1,000 among all other births. The high mortality with abruption was due, in part, to its strong association with preterm delivery; 55% of the excess perinatal deaths with abruption were due to early delivery. Furthermore, babies in the lowest centile of weight (<1% adjusted for gestational age) were almost nine times as likely to be born with abruption than those in the heaviest (> or =90%) birth weight centiles. This relative risk progressively declined with higher birth weight centiles. After controlling for fetal growth restriction and early delivery, the high risk of perinatal death associated with abruption persisted. Even babies born at 40 weeks of gestation and birth weight of 3,500-3,999 g (where mortality was lowest) had a 25-fold higher mortality with abruption. The link between fetal growth restriction and abruption suggests that the origins of abruption lie at least in midpregnancy and perhaps even earlier.
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Affiliation(s)
- C V Ananth
- Department of Obstetrics, Gynecology, and Reproductive Sciences, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, New Brunswick 08901-1977, USA.
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31
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Abstract
A female driver, 24 weeks pregnant, was wearing a three-point seatbelt in the manner usual for nonpregnant women, when her automobile collided head-on with another vehicle. A cardiotocographic examination after the accident revealed the fetus to be alive. Five days after the accident, however, a cardiotocographic examination showed fetal death. At that time, a transverse ecchymotic band on the lower abdominal wall that had not been observed at the first examination was noticed. Eight days after the accident, the mother delivered a macerated female fetus. At autopsy, the baby showed no abnormality, but there was a hematoma on the placental surface toward the uterus. These results suggest that the fetus died of abruptio placentae associated with incorrect placement of the lap belt.
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Affiliation(s)
- Y Bunai
- Department of Legal Medicine, Gifu University School of Medicine, Gifu, Japan
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Ambach E, Parson W, Brezinka C. Superfecundation and dual paternity in a twin pregnancy ending with placental abruption. J Forensic Sci 2000; 45:181-3. [PMID: 10641935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
A case of superfecundation and dual paternity in a twin pregnancy is presented. Placental abruption developed at week 33 of gestation and the two boys had to be saved by emergency cesarean section. As they shared one placenta, had almost identical weight and had the same sex, they were assumed to be monozygotic. However, a subsequent paternity suit led to the conclusion, based on DNA-analysis, that the twin brothers had been fathered by two different men. Obstetrical implications are discussed.
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Affiliation(s)
- E Ambach
- Institute for Forensic Medicine, University of Innsbruck, Austria
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Abstract
Two apparent acute problems that may occur in labor, nuchal cord and placental abruption, were associated with chorangiosis of the placenta. The importance of complete placental examination in perinatal mortality is re-emphasized. The association of apparent acute obstetrical conditions, e.g., nuchal cord and placental abruption with chorangiosis of the placenta, may be the cause of fetal-newborn deaths that were previously assumed to be issues of labor management.
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Affiliation(s)
- R A Franciosi
- Department of Pathology, Children's Hospital of Wisconsin, Milwaukee 53201, USA
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Rana A, Sawhney H, Gopalan S, Panigrahi D, Nijhawan R. Abruptio placentae and chorioamnionitis-microbiological and histologic correlation. Acta Obstet Gynecol Scand 1999; 78:363-6. [PMID: 10326877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/12/2023]
Abstract
BACKGROUND To determine the association of chorioamnionitis with placental abruption. SUBJECT AND METHOD Fifty pregnant women admitted with abruptio placentae were compared to an equally large control group in spontaneous labor with no history of antepartum hemorrhage. Swabs from the cervix and placental membranes were cultured for aerobic and anaerobic organisms. Placental membranes were studied histologically in 40 women of study group and 35 of control group for any evidence of chorioamnionitis. RESULTS Specific organisms were isolated in 22 (44%) women in the study group and 19 (38%) women in the control group. The cervical swab microbiological flora was similar in both groups but isolation of specific organisms from placental membrane culture was higher in the study group (40%) compared to the controls (18% p<0.05). Evidence of histologic chorioamnionitis was higher in the study group 12/40 (30%), than in the control group 8/35 (22.85%), but the difference was not significant. CONCLUSION The incidence of silent chorioamnionitis (placental membrane culture positivity) is higher in the abruptio placentae.
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Affiliation(s)
- A Rana
- Department of Obstetrics & Gynecology, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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35
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Magriples U, Chan DW, Bruzek D, Copel JA, Hsu CD. Thrombomodulin: a new marker for placental abruption. Thromb Haemost 1999; 81:32-4. [PMID: 9974370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Thrombomodulin (TM), a marker of endothelial cell damage, has been localized to the placental syncytiotrophoblast. A prospective cohort study of twenty-five pregnant women who were admitted with a clinical diagnosis of placental abruption was undertaken. Abruption was confirmed after delivery in eight cases (Group 1). Group 2 consisted of seventeen patients with no clinical or pathologic evidence of placental abruption after delivery. TM was significantly elevated in Group 1 (71.59+/-5.35 vs. 48.29+/-3.53 ng/ml, p = 0.001). The sensitivity and specificity of TM > or =60 ng/ml as a marker for abruption was 87.5 and 76.5%, respectively. In comparison, the sensitivity of an abnormal coagulation profile, maternal Kleihauer-Betke and ultrasound in patients with abruption was 0, 16.7 and 28.6%, respectively. TM is a highly sensitive and specific marker for acute placental abruption.
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Affiliation(s)
- U Magriples
- Department of Obstetrics and Gynecology, Yale University, New Haven, CT 06510, USA
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36
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Emmrich P, Horn LC, Seifert U. [Morphologic findings in fetuses and placentas of late abortion in the 2nd trimester]. Zentralbl Gynakol 1998; 120:399-405. [PMID: 9757547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
To investigate possible causes of abortion (and intrauterine foetal death) we reviewed clinical and morphological data of foetuses and placentas morphologically from 830 spontaneous abortions seen during a 12 years period (1978-1989) at the Institute of Pathology, University of Leipzig, and the Pathological Institute of Hoyerswerda. Our review showed that definite and possible causes of foetal death and abortion could be classified as placental, foetal maternal, and clinical. Placental changes, which included infection of the foetal membranes, disturbances of the uteroplacental circulation (abruptio placentae with bleeding) and placental dysmaturity, were the most important causes and accounted for 73.8% of the cases. Foetal causes mainly comprised multiple twin pregnancies and foetal malformations. In 20 cases (2.4%) we found malformations as a cause of foetal death and consecutive abortion. Overall, malformations were found in 7.5% of the cases examined. Maternal and obstetric complications of pregnancy were less frequent. In 16.5% of our cases, the cause of the abortion or intrauterine death remained obscure. However, since 1989, genetic analysis and prenatal diagnostic procedures have improved, bringing a greater knowledge on the spectrum and aetiology of possible developmental disorders in the foetus. This should reduce the number of unexplained abortions.
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Affiliation(s)
- P Emmrich
- Institut für Pathologie der Universität Leipzig
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37
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Abstract
The syndrome of abruptio placentae was originally described in 1997. Total hysterectomy was advocated by Couvelaire in 1991. The placenta is fixed to the uterine wall by anchoring villi. When spiral arteries lack the physiologic trophoblast invasion, like in case of maternal hypertension placental infarcts/abruption might occur. Infusion of thromboplastic material induces disseminated intravascular coagulation. The uterus "en bois" representing hypertonicity and polysystolia probably safe-guard the entrance of further thromboplastic material into the maternal circulation. Prompt restoration of the intravascular volume with full blood avoids hysterectomy. Preventive measures are avoidance of the supine position, cocaine and smoking. Treatment of hyperhomocysteinemia probably can prevent vascular damage.
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Affiliation(s)
- T K Eskes
- Department of Obstetrics and Gynaecology, University Hospital Nijmegen Sint Radboud, The Netherlands.
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38
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Winkler M, Rath W. [Premature placental separation]. Z Geburtshilfe Neonatol 1997; 201:34-7. [PMID: 9172905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- M Winkler
- Frauenklinik für Gynäkologie und Geburtshilfe, Rheinisch-Westfälischen Technischen Hochschule Aachen
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Stratta P, Besso L, Canavese C, Grill A, Todros T, Benedetto C, Hollo S, Segoloni GP. Is pregnancy-related acute renal failure a disappearing clinical entity? Ren Fail 1996; 18:575-84. [PMID: 8875682 DOI: 10.3109/08860229609047680] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
The actual disappearance of pregnancy-related acute renal failure (PR-ARF) is a common "feeling" for nephrologists. The aim of this study was to exactly quantify this event by evaluating epidemiology and the extent of renal damage in PR-ARF. From 1958 to 1994, 84 cases of PR-ARF were observed (5.8% of total number of ARF needing dialysis). In four successive periods (1956-67, 1968-77, 1978-87, 1988-94), the incidence of PR-ARF fell from 43% to 0.5% with respect to the total number of ARF, and from 1/3000 to 1/18,000 with respect to the total number of pregnancies. Maternal mortality in the past was high (31%), but no cases of death in the last period were seen. Irreversible renal damage was recorded in 11.1% of PR-ARF, and, in particular, in 18.7% of cases of preeclampsia-eclampsia (PE-E). The worst maternal and renal prognosis occurred in PE-E that was complicated by abruptio placentae (AP). Neither disseminated intravascular coagulation (DIC), microangiopathic hemolytic anemia, nor prostacyclin imbalance were significantly related to the severity of renal damage. Heparin therapy did not modify DIC evolution and renal outcome and was aggravated by severe hemorragic complications. Support therapy with plasma infusion, antithrombin III, and antiplatelet agents seems to be helpful. In conclusion, PR-ARF has become a rare occurrence and, in our experience, no cases of death or irreversible renal damage were observed in the last 7 years. The most important reasons for this favorable evolution seem to be an improved medical care and more effective measures of careful prevention, mainly regarding tempestive delivery.
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Affiliation(s)
- P Stratta
- Department of Nephrology, University of Torino, Italy
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40
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Salafia CM, Ernst LM, Pezzullo JC, Wolf EJ, Rosenkrantz TS, Vintzileos AM. The very low birthweight infant: maternal complications leading to preterm birth, placental lesions, and intrauterine growth. Am J Perinatol 1995; 12:106-10. [PMID: 7779189 DOI: 10.1055/s-2007-994417] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The placental lesions of the very low birthweight (VLBW) infant were investigated in relation to clinical complications leading to preterm birth and evidence of growth impairment. The 249 singleton gestations yielding infants less than 1500 g were grouped according to the clinical complications leading to preterm birth as premature membrane rupture (116/249, 47%) preterm labor (55/249, 22%), pregnancy-induced hypertension (PIH, 54/249, 22%), and normotensive abruption (ABR, 24/249, 10%). Specifically excluded from this data set were cases with greater than 2 weeks discordance, fetal congenital anomalies, placenta previa, and maternal medical or gestational diseases such as chronic hypertension and diabetes mellitus, and intrauterine growth retardation (IUGR) as a primary indication for delivery. Placental weight and lesions including decidual vasculopathy and related villous lesions, chronic villitis/intervillositis, and decidual plasmacytosis were considered as variables in analyses in which raw birthweight was the dependent variable and gestational age a confounder. Of the 195 VLBW, 79 (41%) infants from normotensive mothers had lesions of decidual vasculopathy or chronic inflammation. In the VLBW infants from hypertensive mothers, growth restriction was related to markers of decidual vasculopathy. In the absence of maternal hypertension the growth restriction was independently associated with chronic villitis. Decidual vasculopathy (characteristic of PIH) and chronic intrauterine inflammation underlie the complications of many normotensive VLBW infants. The placental lesions in VLBW-IUGR depend on the presence or absence of maternal hypertension. In the absence of maternal hypertension, VLBW-IUGR is associated with chronic inflammation and is independent of decidual vasculopathy. In the presence of maternal hypertension, VLBW-IUGR is directly related to decidual vasculopathy.
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Affiliation(s)
- C M Salafia
- Department of Pathology, University of Connecticut School of Medicine, Farmington, USA
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Grisaru D, Jaffa AJ, Har-Toov J, Gull I, Peyser R. Prenatal sonographic diagnosis of intermembranous abruptio placentae in a twin pregnancy. J Ultrasound Med 1994; 13:807-808. [PMID: 7823345 DOI: 10.7863/jum.1994.13.10.807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Affiliation(s)
- D Grisaru
- Department of Obstetrics and Gynecology A, Serlin Maternity Hospital, Tel Aviv, Israel
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Abstract
OBJECTIVE To investigate structural changes in the uteroplacental blood vessels in association with placental abruption. DESIGN Prospective descriptive study. SUBJECTS 18 women with clinical evidence of severe placental abruption delivered by caesarean section. INTERVENTIONS Placental bed biopsies were obtained at caesarean section and studied histologically. RESULTS Six specimens did not include trophoblast in the myometrium and were therefore not representative of the placental bed. Of the 12 representative specimens, seven demonstrated absence of physiological transformation of the utero-placental arteries (four of these were from hypertensive patients). Four biopsies showed abnormal vascular structures deep in the myometrium. One of these abnormal vessels included a fresh plug and extensive surrounding intramyometrial haemorrhage. CONCLUSIONS Vascular malformations in association with placental abruption may be the result of trophoblastic invasion and could be the site of vessel rupture. Further descriptive and comparative studies are needed.
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Affiliation(s)
- J Dommisse
- Department of Obstetrics & Gynaecology, University of Cape Town, South Africa
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Darby MJ, Caritis SN, Shen-Schwarz S. Placental abruption in the preterm gestation: an association with chorioamnionitis. Obstet Gynecol 1989; 74:88-92. [PMID: 2733948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Thirty-seven women with acute severe preterm placental abruption were compared with a control group of 51 women requiring preterm delivery for a medical complication of pregnancy. Histologic chorioamnionitis and funisitis were present significantly more often in patients with abruption than in control patients (41 versus 4%; P less than .0001). No patient in either group had clinical evidence of chorioamnionitis. We conclude that a significant association exists between preterm placental abruption and histologic chorioamnionitis.
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Affiliation(s)
- M J Darby
- Department of Obstetrics and Gynecology, University of Pittsburgh School of Medicine, Magee-Womens Hospital, Pennsylvania
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44
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Kramarskaia NB. [Clinico-morphological aspects of the premature detachment of a normally situated placenta]. Akush Ginekol (Mosk) 1986:59-63. [PMID: 2940901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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45
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Abstract
The incidence of amniotic fluid infection syndrome, as assessed by the presence of an acute inflammatory infiltrate of the placenta, umbilical cord, and membranes at birth, was 23.3% in pregnancies complicated by severe abruptio placentae. This was not significantly higher than that noted in uncomplicated pregnancies. These data therefore fail to support the proposal that amniotic fluid infection predisposes to placental abruption.
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46
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Harris BA, Gore H, Flowers CE. Peripheral placental separation: a possible relationship to premature labor. Obstet Gynecol 1985; 66:774-8. [PMID: 4069478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
This investigation was undertaken to determine the relationship, if any, between peripheral placental separation and idiopathic premature labor. Ninety placentas from prematurely delivered patients (who had had no antepartum bleeding) were examined grossly and microscopically. Criteria for antepartum peripheral placental separation included adherent clot, with fibrin deposition and lamination, as well as polymorphonuclear infiltration and marginal decidual necrosis. Forty-nine placentas showed unequivocal evidence of previous peripheral separation. Another three placentas showed presumptive evidence of previous peripheral separation. It is suggested that this separation is of venous origin, and that it may play a role in the process of premature labor. This is not necessarily a cause and effect relationship.
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47
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Bréchon JM, Darbois Y. [Premature separation of the placenta in the 3d trimester]. Rev Prat 1985; 35:1363-75. [PMID: 4012204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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48
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van Dongen LG, Goudie E. Placental patterns as seen on ultrasonography. S Afr Med J 1983; 64:545-7. [PMID: 6623240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
The first exciting days of being able to see the placenta in utero and localize the site of implantation are over. It is now commonplace to ask about the placental site automatically when requesting an ultrasonogram of a pregnant uterus, and it is taken for granted that this will be mentioned in the report. However, with the new and more sophisticated ultrasound equipment now in use, it is today incumbent on the ultrasonologist to give a short report on the placenta and the umbilical cord, in addition to the report on the fetus.
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50
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Scharlau L, Jelinek V. [Premature separation of the placenta in the 37th pregnancy week as a result of an ileus in pregnancy]. Med Welt 1981; 32:1618-9. [PMID: 7300663] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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