1
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Yücesoy E, Demir Yenigürbüz F, Ateş H, Tüzün F, Duman N, Özkan H, Ören H. Effect of hyperbilirubinemia and phototherapy on apoptotic microparticle levels in neonates. Blood Coagul Fibrinolysis 2024; 35:227-231. [PMID: 38973516 DOI: 10.1097/mbc.0000000000001297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/09/2024]
Abstract
OBJECTIVE We aimed to evaluate the effect of hyperbilirubinemia and phototherapy on total apoptotic, platelet-derived, endothelial-derived, and tissue factor (TF)-positive apoptotic microparticle (MP) levels in neonates with nonhemolytic pathologic hyperbilirubinemia. METHODS Thirty-three term neonates with nonhemolytic pathologic hyperbilirubinemia and 25 healthy term neonates were included. MP levels were analyzed by flow cytometry using peripheral blood samples only once for the neonates in the control group and twice for the neonates in the study group (before and after phototherapy). Annexin V-positive MPs were defined as apoptotic MPs. Platelet-derived MPs were defined as those containing CD31. MPs containing CD144 were defined as endothelial-derived MPs, and MPs expressing TF were identified as those containing CD142. RESULTS The rates of total apoptotic and endothelial-derived apoptotic MPs were significantly higher in the study group than the control group before phototherapy (P = 0.012 and P = 0.003, respectively) and after phototherapy (P = 0.046 and P = 0.001, respectively). Total apoptotic, platelet-derived, endothelial-derived, and TF-positive apoptotic MPs did not show any significant differences before and after phototherapy in the study group (P = 0.908, P = 0.823, P = 0.748, and P = 0.437, respectively). CONCLUSIONS Our study demonstrated that total apoptotic and endothelial-derived apoptotic MPs are increased in cases of nonhemolytic pathologic hyperbilirubinemia. We showed that phototherapy does not have a significant effect on apoptotic MP levels. Further studies are needed to evaluate the risk of elevated apoptotic MPs on the development of thromboembolism in neonates with nonhemolytic pathologic hyperbilirubinemia.
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Affiliation(s)
- Ebru Yücesoy
- Department of Pediatrics, Division of Neonatology
| | - Fatma Demir Yenigürbüz
- Department of Pediatrics, Division of Pediatric Hematology, Dokuz Eylül University Faculty of Medicine
| | - Halil Ateş
- Department of Medical Oncology, Dokuz Eylül University Institute of Oncology, Izmir, Turkey
| | - Funda Tüzün
- Department of Pediatrics, Division of Neonatology
| | - Nuray Duman
- Department of Pediatrics, Division of Neonatology
| | - Hasan Özkan
- Department of Pediatrics, Division of Neonatology
| | - Hale Ören
- Department of Pediatrics, Division of Pediatric Hematology, Dokuz Eylül University Faculty of Medicine
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2
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Katsaras G, Gialamprinou D, Kontovazainitis CG, Psaroulaki E, Mitsiakos G. Neonatal hemostasis and the use of thromboelastography/rotational thromboelastometry in the neonatal period. Minerva Pediatr (Torino) 2024; 76:425-438. [PMID: 37166777 DOI: 10.23736/s2724-5276.23.07214-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Developmental hemostasis refers to age-related alterations related to the progressive maturation of the hemostatic system. Although the conventional coagulation tests, such as prothrombin time (PT) and activated partial thromboplastin time (aPTT), are indeed helpful in coagulation workup, they do not accurately delineate the hemostasis in vivo. The viscoelastic tests, namely thromboelastography (TEG) and rotational thromboelastometry (ROTEM), seem to reflect hemostasis more accurately since they measure various clot parameters without excluding the cellular coagulation components. TEG and ROTEM have shown redaction in blood product administration when used in therapeutic algorithms in older children and adults, but their use in neonates is limited. This review summarizes the current literature regarding using these tests in the neonatal population. Several studies tried to resolve the lack of neonatal reference values of the TEG/ROTEM parameters by publishing neonatal reference ranges for various gestational age groups. Moreover, few studies concerning therapeutic hypothermia, neonates undergoing surgery, and critically ill neonates have shown some predictive value of these tests regarding bleeding events. Even though their results seem promising, larger studies of higher quality are needed to clarify any discrepancies and point out whether these tests have significant predictive value. In conclusion, viscoelastic tests need to be increasingly part of the NICUs' clinical routine and should be used along with conventional coagulation tests in transfusion therapy.
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Affiliation(s)
- Georgios Katsaras
- Department of Pediatrics, Hospital Unit of Edessa, General Hospital of Pella, Edessa, Greece -
- Second Neonatal Department and Neonatal Intensive Care Unit (NICU), Aristotle University of Thessaloniki, Papageorgiou Hospital, Thessaloniki, Greece -
| | - Dimitra Gialamprinou
- Second Neonatal Department and Neonatal Intensive Care Unit (NICU), Aristotle University of Thessaloniki, Papageorgiou Hospital, Thessaloniki, Greece
| | - Christos-Georgios Kontovazainitis
- Second Neonatal Department and Neonatal Intensive Care Unit (NICU), Aristotle University of Thessaloniki, Papageorgiou Hospital, Thessaloniki, Greece
| | - Evdokia Psaroulaki
- Department of Pediatrics, Hospital Unit of Edessa, General Hospital of Pella, Edessa, Greece
| | - Georgios Mitsiakos
- Second Neonatal Department and Neonatal Intensive Care Unit (NICU), Aristotle University of Thessaloniki, Papageorgiou Hospital, Thessaloniki, Greece
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3
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Yared G, Tachdjian A, El Kazwini MEJ, Azzi J, El Hajjar C, Ghazal K. A case study on using an intrauterine foley catheter to reduce postpartum bleeding in a patient with hemophilia. Int J Gynaecol Obstet 2024; 164:347-348. [PMID: 37753875 DOI: 10.1002/ijgo.15123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/17/2023] [Accepted: 08/27/2023] [Indexed: 09/28/2023]
Abstract
SynopsisCase of a pregnant patient suffering from severe hemophilia A who had effective uterine foley tamponade to treat postpartum hemorrhage.
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Affiliation(s)
| | - Annie Tachdjian
- Obstetrics and Gynecology Department, Faculty of Public Health, Lebanese University, Beirut, Lebanon
| | | | - Joelle Azzi
- Pharmacist Department, Faculty of Public Health, Lebanese University, Beirut, Lebanon
| | - Charlotte El Hajjar
- Obstetrics and Gynecology Department, Rafik Hariri Hospital University Medical Center, Beirut, Lebanon
- Obstetrics and Gynecology Department, Al Zahraa Hospital University Medical Centre, Beirut, Lebanon
| | - Kariman Ghazal
- Obstetrics and Gynecology Department, Al Zahraa Hospital University Medical Centre, Beirut, Lebanon
- Obstetrics and Gynecology Department, Faculty of Medical Sciences, Lebanese University, Beirut, Lebanon
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4
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Quinn T, Cholette JM, Pinto MG, Schreiber H, Madden MA, Bennett E, Kolmar A, Poole A, Silva CT, Ehrlich L, Navarro OM, Faustino EVS. Antithrombin activity and central venous catheter-associated thrombosis in critically ill children at high risk of bleeding. J Thromb Haemost 2024; 22:213-224. [PMID: 37797693 DOI: 10.1016/j.jtha.2023.09.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 08/21/2023] [Accepted: 09/21/2023] [Indexed: 10/07/2023]
Abstract
BACKGROUND Normalization of antithrombin activity may prevent catheter-associated thrombosis in critically ill children at high risk of bleeding. OBJECTIVES To characterize the temporal pattern of antithrombin activity, assess its association with catheter-associated thrombosis and clinically relevant bleeding, and evaluate its relationship with thrombin generation in these children. METHODS In this prospective cohort study, critically ill children <18 years old at high risk of bleeding with central venous catheter were eligible. Antithrombin activity and thrombin generation were measured from platelet-poor plasma and after in vitro antithrombin supplementation. Systematic surveillance ultrasound was performed to diagnose thrombosis. Children were followed for bleeding. RESULTS We enrolled 8 infants (median age: 0.2 years, IQR: 0.2, 0.3 years) and 72 older children (median age: 14.3 years, IQR: 9.1, 16.1 years). Mean antithrombin on the day of catheter insertion was 64 IU/dL (SD: 32 IU/dL) in infants and 83 IU/dL (SD: 35 IU/dL) in older children. Antithrombin normalized by the day of catheter removal. Thrombosis developed in 27 children, while 31 children bled. Thrombosis (regression coefficient: 0.008, 95% CI: -0.01, 0.03) and bleeding (regression coefficient: -0.0007, 95% CI: -0.02, 0.02) were not associated with antithrombin. Antithrombin was not correlated with in vivo change in endogenous thrombin potential (correlation coefficient: -0.07, 95% CI: -0.21, 0.08). In vitro supplementation reduced endogenous thrombin potential (correlation coefficient: -0.78; 95% CI: -0.95, -0.23). CONCLUSION These findings may not support normalization of antithrombin activity to prevent catheter-associated thrombosis in critically ill children at high risk of bleeding.
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Affiliation(s)
- Tyler Quinn
- Pediatric Intensive Care Unit, Yale-New Haven Children's Hospital, New Haven, Connecticut, USA
| | - Jill M Cholette
- Department of Pediatrics, University of Rochester Golisano Children's Hospital, Rochester, New York, USA
| | - Matthew G Pinto
- Department of Pediatrics, New York Medical College, Maria Fareri Children's Hospital, Valhalla, New York, USA
| | - Hilary Schreiber
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
| | - Maureen A Madden
- Department of Pediatrics, Rutgers-Robert Wood Johnson Medical School, New Brunswick, New Jersey, USA
| | - Erin Bennett
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA
| | - Amanda Kolmar
- Department of Pediatrics, Washington University in St Louis, St Louis, Missouri, USA
| | - Alan Poole
- Division of Critical Care, UT Southwestern Medical Center, Dallas, Texas, USA
| | - Cicero T Silva
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA
| | - Lauren Ehrlich
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA
| | - Oscar M Navarro
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Medical Imaging, University of Toronto, Toronto, Ontario, Canada
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5
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Berna-Erro A, Granados MP, Rosado JA, Redondo PC. Thrombotic Alterations under Perinatal Hypoxic Conditions: HIF and Other Hypoxic Markers. Int J Mol Sci 2023; 24:14541. [PMID: 37833987 PMCID: PMC10572648 DOI: 10.3390/ijms241914541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2023] [Revised: 09/07/2023] [Accepted: 09/08/2023] [Indexed: 10/15/2023] Open
Abstract
Hypoxia is considered to be a stressful physiological condition, which may occur during labor and the later stages of pregnancy as a result of, among other reasons, an aged placenta. Therefore, when gestation or labor is prolonged, low oxygen supply to the tissues may last for minutes, and newborns may present breathing problems and may require resuscitation maneuvers. As a result, poor oxygen supply to tissues and to circulating cells may last for longer periods of time, leading to life-threatening conditions. In contrast to the well-known platelet activation that occurs after reperfusion of the tissues due to an ischemia/reperfusion episode, platelet alterations in response to reduced oxygen exposition following labor have been less frequently investigated. Newborns overcome temporal hypoxic conditions by changing their organ functions or by adaptation of the intracellular molecular pathways. In the present review, we aim to analyze the main platelet modifications that appear at the protein level during hypoxia in order to highlight new platelet markers linked to complications arising from temporal hypoxic conditions during labor. Thus, we demonstrate that hypoxia modifies the expression and activity of hypoxic-response proteins (HRPs), including hypoxia-induced factor (HIF-1), endoplasmic reticulum oxidase 1 (Ero1), and carbonic anhydrase (CIX). Finally, we provide updates on research related to the regulation of platelet function due to HRP activation, as well as the role of HRPs in intracellular Ca2+ homeostasis.
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Affiliation(s)
- Alejandro Berna-Erro
- Department of Physiology (Phycell), University of Extremadura, Avd de la Universidad s/n, 10003 Caceres, Spain; (A.B.-E.); (P.C.R.)
| | | | - Juan Antonio Rosado
- Department of Physiology (Phycell), University of Extremadura, Avd de la Universidad s/n, 10003 Caceres, Spain; (A.B.-E.); (P.C.R.)
| | - Pedro Cosme Redondo
- Department of Physiology (Phycell), University of Extremadura, Avd de la Universidad s/n, 10003 Caceres, Spain; (A.B.-E.); (P.C.R.)
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6
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Janbain M, Kouides P. Managing Pregnant Women with Hemophilia and von Willebrand Disease: How Do We Provide Optimum Care and Prevent Complications? Int J Womens Health 2022; 14:1307-1313. [PMID: 36119805 PMCID: PMC9480585 DOI: 10.2147/ijwh.s273043] [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] [Received: 04/15/2022] [Accepted: 08/25/2022] [Indexed: 11/30/2022] Open
Abstract
The challenge of pregnancy can be significant to the point of being life-threatening in a woman with a bleeding disorder. Additionally there can be a risk to the fetus and the neonate. A hemostatic defect can affect the course of the pregnancy, but the impact is most feared around delivery in the immediate and the extended post partum period, requiring rapid identification and prompt referral to a hematologist for assistance in management. Identifying the type of congenital bleeding disorder and knowing its inheritance pattern is crucial during counseling prior to conception and in preparation for delivery. A comprehensive approach by a specialized and experienced team in a tertiary care center with access to adequate laboratory monitoring and therapies can facilitate the process. The multidisciplinary team should include a hematologist, an obstetrician, a pediatric hematologist, an anesthesiologist, and in select cases a clinical geneticist and a maternal fetal medicine specialist. In this review article, we will detail the diagnostic path and management of pregnancy and delivery in women with some inherited bleeding disorders, in particular those affected by hemophilia A (HA), hemophilia B (HB), and von Willebrand disease (VWD).
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Affiliation(s)
- Maissaa Janbain
- Deming Department of Internal Medicine, Section of Hematology and Medical Oncology, Tulane School of Medicine, New Orleans, LA, USA
| | - Peter Kouides
- Department of Medicine, University of Rochester School of Medicine and Dentistry, Rochester, NY, USA
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7
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Andersson NG, Kenet G. Intracranial Hemorrhages in Neonates: Incidence, Risk Factors and Treatment. Semin Thromb Hemost 2022; 49:409-415. [PMID: 36108647 DOI: 10.1055/s-0042-1756195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
AbstractHemostasis is a dynamic process that starts in utero. Neonates, especially those who are born preterm, are at high risk of bleeding. The coagulation system evolves with age, and the decreased levels of coagulation factors along with hypo-reactive platelets are counterbalanced with increased activity of von Willebrand factor, high hematocrit and mean corpuscular volume as well as low levels of coagulation inhibitors that promote hemostasis. Neonates with congenital bleeding disorders such as hemophilia are at even higher risk of bleeding complications. This review will focus upon one of the most devastating complications associated with neonatal bleeding: intracranial hemorrhages (ICH). While etiology may be multifactorial and impacted by maternal as well as fetal risk factors, the mode of delivery certainly plays an important role in the pathogenesis of ICH. We will address prematurity and congenital bleeding disorders such as hemophilia A and B and other rare bleeding disorders as risk factors and present an updated approach for treatment and possible prevention.
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Affiliation(s)
- Nadine G. Andersson
- Center for Thrombosis and Hemostasis and Department of Pediatric Hematology and Oncology, Skåne University Hospital, Malmö/Lund, Sweden
- Department of Clinical Sciences, Lund University, Lund, Sweden
| | - Gili Kenet
- National Hemophilia Center, Institute of Thrombosis and Hemostasis and the Amalia Biron Research Institute, Sheba Medical Center, Tel-Hashomer, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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8
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Poznyakova J, Pshenichnikova O, Surin V, Klebanova E, Galstyan G. New missense mutation p.Trp387Ser affecting the functionally important TrpXXTrp motif in the TSR1 repeat of ADAMTS13 metalloproteinase: case report. Clin Exp Pharmacol Physiol 2022; 49:1150-1155. [PMID: 35762256 DOI: 10.1111/1440-1681.13697] [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: 02/25/2022] [Revised: 05/31/2022] [Accepted: 06/24/2022] [Indexed: 11/28/2022]
Abstract
Upshaw-Schulman syndrome (USS) - rare autosomal recessive disease that affects less than 1/1,000,000 individuals. It is characterized by the massive formation of platelet thrombi in the microcirculation accompanied by hemolytic anemia, thrombocytopenia, and clinical and laboratory signs of renal and neurological failure. USS is caused by mutations in the ADAMTS13 gene. Mutations in the ADAMTS13 gene can lead to disruption of secretion of this enzyme, or to decrease of enzyme proteinase activity without effect on ADAMTS13 secretion. The aim of this work is to describe a clinical case of Upshaw-Schulman syndrome caused by a new missense mutation in the ADAMTS13 gene. The diagnosis of TTP was based on clinical signs and confirmed if plasma ADAMTS13 activity was less than 10%. ADAMTS 13 gene sequencing was performed by Sanger method using oligonucleotide primers of our own design. We found a new, undescribed mutation p.Trp387Ser in a TrpXXTrp motif. Previously a pathogenic variation disrupting the 387TrpSerSerTrp390 motif of the ADAMTS13 protein was detected only once. Clinical picture of a patient with the combination of the p.Trp387Ser and p.Arg1060Trp variations is quite similar to that of the homozygous state of p.Arg1060Trp variant.
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Affiliation(s)
- J Poznyakova
- National Medical Research Center for Hematology, Ministry of Health Moscow, Russian Federation, Russia
| | - O Pshenichnikova
- National Medical Research Center for Hematology, Ministry of Health Moscow, Russian Federation, Russia
| | - V Surin
- National Medical Research Center for Hematology, Ministry of Health Moscow, Russian Federation, Russia
| | - E Klebanova
- National Medical Research Center for Hematology, Ministry of Health Moscow, Russian Federation, Russia
| | - G Galstyan
- National Medical Research Center for Hematology, Ministry of Health Moscow, Russian Federation, Russia
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9
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Kenet G, Barg AA, Nowak-Göttl U. New insights into neonatal hemostasis. THROMBOSIS UPDATE 2022. [DOI: 10.1016/j.tru.2022.100103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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10
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Guzzardo GM, Regling K. Developmental Hemostasis: The Evolution of our Coagulation System. Neoreviews 2022; 23:e82-e95. [PMID: 35102383 DOI: 10.1542/neo.23-2-e82] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Developmental hemostasis describes the evolution of the coagulation system from the neonatal period through adulthood. Neonates have lower levels of coagulation factors and elevated screening levels at birth. These levels can be influenced by various circumstances including gestational age, labor effects, and clinical status. The most commonly used screening tests for coagulopathy are the prothrombin time, partial thromboplastin time, and fibrinogen level. These values can be difficult to interpret as every laboratory has its own age-specific reference ranges. An understanding of developmental hemostasis is important when evaluating, diagnosing, and treating clinical manifestations, including vitamin K deficiency, surgical needs, infections, inherited thrombophilias, and inherited bleeding disorders. The mainstay of treatment for bleeding or hemorrhage is platelet and fresh frozen plasma transfusions. For the treatment of thrombosis, unfractionated heparin and low-molecular-weight heparin are the 2 most commonly used anticoagulants in the neonatal setting.
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Affiliation(s)
- Gianna M Guzzardo
- Department of Pediatric Hematology Oncology, Children's Hospital of Michigan, Detroit, MI
| | - Katherine Regling
- Department of Pediatric Hematology Oncology, Children's Hospital of Michigan, Detroit, MI
- Central Michigan University School of Medicine, Detroit, MI
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11
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Turan O, Kadir RA. Pregnancy in special populations: challenges and solutions practical aspects of managing von Willebrand disease in pregnancy. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2021; 2021:552-558. [PMID: 34889419 PMCID: PMC8791099 DOI: 10.1182/hematology.2021000321] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Pregnancy and childbirth pose an important hemostatic challenge for women with von Willebrand disease (VWD) and can be associated with an increased risk of maternal and neonatal bleeding complications. VWD is a genetically and clinically heterogeneous bleeding disorder caused by a deficiency or an abnormality in the function of von Willebrand factor. Understanding inheritance pattern, hemostatic response to pregnancy, and response to treatment is essential for provision of individualized obstetric care and optimal outcome. A multidisciplinary approach to management with a close liaison between the obstetric team and the hemophilia treatment center is required for continuity of care from preconception counseling through to antenatal, peripartum, and postpartum care. Delivery plan must be coordinated by the multidisciplinary team and include decisions on place and mode of delivery, implementation of safe analgesia/anesthesia, and peripartum hemostasis. In this clinical case-based review, we aim to deliver evidence-based practical guidance for challenges encountered during pregnancy and management of childbirth and puerperium.
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Affiliation(s)
- Ozlem Turan
- Katharine Dormandy Haemophilia and Thrombosis Unit and Department of Obstetrics and Gynecology, Royal Free Hospital NHS Trust, London, UK
- EGA Institute for Women's Health, University College London, London, UK
| | - Rezan Abdul Kadir
- Katharine Dormandy Haemophilia and Thrombosis Unit and Department of Obstetrics and Gynecology, Royal Free Hospital NHS Trust, London, UK
- EGA Institute for Women's Health, University College London, London, UK
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12
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Ponomarenko EA, Ignatova AA, Polokhov DM, Khismatullina RD, Kurilo DS, Shcherbina A, Zharkov PA, Maschan AA, Novichkova GA, Panteleev MA. Healthy pediatric platelets are moderately hyporeactive in comparison with adults' platelets. Platelets 2021; 33:727-734. [PMID: 34749589 DOI: 10.1080/09537104.2021.1981848] [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] [Indexed: 10/19/2022]
Abstract
Studies on platelet function in children older than neonatal period are few and their results are controversial. The pediatric platelets were alternatively reported to be more active or less active than adults' ones. We compared platelet function in the several age groups of children to adults and evaluated the age when platelet function reaches the adults' status. The study included 76 healthy children and 49 healthy adult volunteers. Types of platelet activation used included: collagen-related peptide (CRP) and PAR-1 activating peptide SFLLRN; SFLLRN, PAR-4 activating peptide AYPGKF and adenosine diphosphate (ADP); ADP. The parameters determined included forward (FSC) and side scatter (SSC), CD42b, CD61, CD62P, PAC-1, annexin V binding and mepacrine release levels. Resting pediatric platelets were similar to adults' platelets except for 1.2-fold decreased FSC and dense granules volume in youngest children, and 2.5-fold increased annexin V level in children aged 1-10 years. After CRP+SFLLRN stimulation, pediatric platelets had a 1.2-fold lower alpha- and 1.1-fold lower dense granule release than adults. For SFLLRN+AYPGKF+ADP stimulation, this was observed only for youngest children. The response to ADP stimulation was identical for pediatric platelets and adults. Pediatric platelets have lower granular release than adults' platelets, which persists until the age of 18.
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Affiliation(s)
- Evgeniya A Ponomarenko
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation.,M.V. Lomonosov Moscow State University, Faculty of Biology, Moscow, Russian Federation
| | - Anastasia A Ignatova
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation.,Center for Theoretical Problems of Physicochemical Pharmacology, Russian Academy of Sciences, Laboratory of Molecular Mechanisms of Hemostasis, Moscow, Russian Federation
| | - Dmitrii M Polokhov
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Rimma D Khismatullina
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Darja S Kurilo
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Anna Shcherbina
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Pavel A Zharkov
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Alexey A Maschan
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Galina A Novichkova
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation
| | - Mikhail A Panteleev
- National Medical Research Center of Pediatric Hematology, Oncology and Immunology Named after Dmitry Rogachev, Russian Ministry of Healthcare, Cellular Hemostasis and Thrombosis Lab, Moscow, Russian Federation.,Center for Theoretical Problems of Physicochemical Pharmacology, Russian Academy of Sciences, Laboratory of Molecular Mechanisms of Hemostasis, Moscow, Russian Federation.,M.V. Lomonosov Moscow State University, Faculty of Physics, Moscow, Russian Federation
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13
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Vorobev AV, Bitsadze VO, Khizroeva JK, Potapkina SA, Makatsariya NA, Rizzo G, Di Renzo GC, Blinov DV, Pankratyeva LL, Tsibizova VI. Neonatal thrombosis: risk factors and principles of prophylaxis. OBSTETRICS, GYNECOLOGY AND REPRODUCTION 2021. [DOI: 10.17749/2313-7347/ob.gyn.rep.2021.233] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Data analysis on the pathogenesis and risk factors of neonatal thrombosis was carried out. The main risk factor of any neonatal thrombosis is central catheter installment, but other maternal, fetal and neonatal factors should be taken into consideration. We discuss the epidemiology of neonatal thrombosis and the main features of the hemostasis system in newborns, the most significant risk factors, including genetic and acquired thrombophilia. We consider the von Willebrand factor activity and ADAMTS-13 (a disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13) level in the development of neonatal thrombotic microangiopathy. Finally, we discuss the basic principles of prevented neonatal thrombosis by using low molecular weight heparins.
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Affiliation(s)
| | | | | | | | | | - G. Rizzo
- Sechenov University; University of Rome Tor Vergata
| | - G. C. Di Renzo
- Sechenov University; Center for Prenatal and Reproductive Medicine, University of Perugia
| | - D. V. Blinov
- Institute for Preventive and Social Medicine; Lapino Clinic Hospital, MD Medical Group
| | - L. L. Pankratyeva
- Vorokhobov City Clinical Hospital № 67, Moscow Healthcare Department; Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Health Ministry of Russian Federation
| | - V. I. Tsibizova
- Almazov National Medical Research Centre, Health Ministry of Russian Federation
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14
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Weyand AC, Flood VH. Von Willebrand Disease: Current Status of Diagnosis and Management. Hematol Oncol Clin North Am 2021; 35:1085-1101. [PMID: 34400042 DOI: 10.1016/j.hoc.2021.07.004] [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] [Indexed: 11/25/2022]
Abstract
Von Willebrand disease (VWD) is a common bleeding disorder, affecting male and female individuals equally, that often manifests in mucosal bleeding. VWD can be secondary to a quantitative (Type 1 and Type 3) or qualitative (Type 2) defects in Von Willebrand factor (VWF). Initial testing includes VWF antigen, as well as a platelet binding assay to differentiate between qualitative and quantitative defects. Further subtyping requires additional testing and is needed to ensure appropriate treatment. Desmopressin, antifibrinolytics, hormonal treatments for heavy menstrual bleeding, and VWF concentrates are commonly used in the treatment of VWD.
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Affiliation(s)
- Angela C Weyand
- Department of Pediatrics, University of Michigan Medical School, 1150 W. Medical Center Dr, MSRB III, Room 8220E, Ann Arbor, MI 48109, USA
| | - Veronica H Flood
- Department of Pediatrics, Medical College of Wisconsin and Versiti Blood Research Institute, Milwaukee, WI, USA; Comprehensive Center for Bleeding Disorders, 8739 Watertown Plank Road, PO Box 2178, Milwaukee, WI 53201-2178, USA.
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15
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Gassiot S, Ruiz-Llobet A, Suleman W, Sarrate E, Berrueco R. Thrombin generation in children using ThromboScreen reagent kit with ST Genesia-A pilot study. Int J Lab Hematol 2021; 43:1612-1619. [PMID: 34323010 DOI: 10.1111/ijlh.13668] [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: 01/25/2021] [Revised: 06/22/2021] [Accepted: 07/15/2021] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Thrombin generation assays assess overall coagulation system and are widely used in research; however, they still need standardization and clinical validation. The new ST Genesia is a benchtop, automated analyzer that normalizes each thrombin generation parameter using a reference plasma. The ThromboScreen reagent kit has two triggers, one of which contains thrombomodulin to assess the effect of the protein C pathway. This study aimed to make a pilot approach to the ThromboScreen reference range in children and evaluate the impact of sex, age, and pro- and anticoagulant plasma proteins on thrombin generation parameters. METHODS This study included 55 healthy children from the following age groups: 1-6 years (n = 14), 7-11 years (n = 15), and 12-17 years (n = 26). Children younger than 1 year were excluded from the study. We measured thrombin generation using ThromboScreen, coagulation routine and test, pro- and anticoagulant proteins. RESULTS Age did not influence ThromboScreen results. Males showed significantly lower endogenous thrombin potential and peak height values than females. The strongest determinants of endogenous thrombin potential were von Willebrand factor parameters, whereas for endogenous thrombin potential inhibition, the strongest determinants were protein C and protein S. No statistically significant differences were found between groups on temporal parameters. CONCLUSIONS For the ThromboScreen reagent kit, it may not be necessary to subdivide reference ranges according to age for children (>1 year).
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Affiliation(s)
- Susanna Gassiot
- Hematology Laboratory, Hospital Sant Joan de Déu, Barcelona, Spain.,Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain
| | - Anna Ruiz-Llobet
- Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain.,Service of Pediatric Hematology, Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
| | - Warda Suleman
- Hematology Laboratory, Hospital Sant Joan de Déu, Barcelona, Spain.,Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain
| | - Edurne Sarrate
- Hematology Laboratory, Hospital Sant Joan de Déu, Barcelona, Spain.,Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain
| | - Ruben Berrueco
- Institut de Recerca Hospital Sant Joan de Déu, Barcelona, Spain.,Service of Pediatric Hematology, Hospital Sant Joan de Déu, Universitat de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Instituto de Salud Carlos III, Madrid, Spain
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16
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Faustino EVS, Raffini LJ, Hanson SJ, Cholette JM, Pinto MG, Li S, Kandil SB, Nellis ME, Shabanova V, Silva CT, Tala JA, McPartland T, Spinella PC. Age-Dependent Heterogeneity in the Efficacy of Prophylaxis With Enoxaparin Against Catheter-Associated Thrombosis in Critically Ill Children: A Post Hoc Analysis of a Bayesian Phase 2b Randomized Clinical Trial. Crit Care Med 2021; 49:e369-e380. [PMID: 33566465 PMCID: PMC7979442 DOI: 10.1097/ccm.0000000000004848] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVES We explored the age-dependent heterogeneity in the efficacy of prophylaxis with enoxaparin against central venous catheter-associated deep venous thrombosis in critically ill children. DESIGN Post hoc analysis of a Bayesian phase 2b randomized clinical trial. SETTING Seven PICUs. PATIENTS Children less than 18 years old with newly inserted central venous catheter. INTERVENTIONS Enoxaparin started less than 24 hours after insertion of central venous catheter and adjusted to anti-Xa level of 0.2-0.5 international units/mL versus usual care. MEASUREMENTS AND MAIN RESULTS Of 51 children randomized, 24 were infants less than 1 year old. Risk ratios of central venous catheter-associated deep venous thrombosis with prophylaxis with enoxaparin were 0.98 (95% credible interval, 0.37-2.44) in infants and 0.24 (95% credible interval, 0.04-0.82) in older children greater than or equal to 1 year old. Infants and older children achieved anti-Xa level greater than or equal to 0.2 international units/mL at comparable times. While central venous catheter was in situ, endogenous thrombin potential, a measure of thrombin generation, was 223.21 nM.min (95% CI, 8.78-437.64 nM.min) lower in infants. Factor VIII activity, a driver of thrombin generation, was also lower in infants by 45.1% (95% CI, 15.7-74.4%). Median minimum platelet count while central venous catheter was in situ was higher in infants by 39 × 103/mm3 (interquartile range, 17-61 × 103/mm3). Central venous catheter:vein ratio was not statistically different. Prophylaxis with enoxaparin was less efficacious against central venous catheter-associated deep venous thrombosis at lower factor VIII activity and at higher platelet count. CONCLUSIONS The relatively lesser contribution of thrombin generation on central venous catheter-associated thrombus formation in critically ill infants potentially explains the age-dependent heterogeneity in the efficacy of prophylaxis with enoxaparin.
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Affiliation(s)
| | - Leslie J Raffini
- Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania, Philadelphia, PA
| | - Sheila J Hanson
- Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI
| | - Jill M Cholette
- Department of Pediatrics, University of Rochester Golisano Children's Hospital, Rochester, NY
| | - Matthew G Pinto
- Department of Pediatrics, New York Medical College, Maria Fareri Children's Hospital, Valhalla, NY
| | - Simon Li
- Department of Pediatrics, New York Medical College, Maria Fareri Children's Hospital, Valhalla, NY
| | - Sarah B Kandil
- Department of Pediatrics, Yale School of Medicine, New Haven, CT
| | - Marianne E Nellis
- Department of Pediatrics, NY Presbyterian Hospital/Weill Cornell Medicine, New York, NY
| | | | - Cicero T Silva
- Department of Diagnostic Radiology, Yale School of Medicine, New Haven, CT
| | - Joana A Tala
- Pediatric Intensive Care Unit, Yale-New Haven Children's Hospital, New Haven, CT
| | - Tara McPartland
- Yale Center for Clinical Investigation, Yale School of Medicine, New Haven, CT
| | - Philip C Spinella
- Department of Pediatrics, Washington University in St. Louis, St. Louis, MO
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17
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How I manage pregnancy in carriers of hemophilia and patients with von Willebrand disease. Blood 2021; 136:2143-2150. [PMID: 32797211 DOI: 10.1182/blood.2019000964] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 06/15/2020] [Indexed: 12/11/2022] Open
Abstract
Women with inherited bleeding disorders, including carriers of hemophilia A and B, or with von Willebrand disease, have an increased risk of bleeding during pregnancy and delivery. The unborn child may also be affected by the bleeding disorder for which specific measures have to be considered. This requires a multidisciplinary approach, with a team that includes a hematologist, a pediatric hematologist, a clinical geneticist, an obstetrician-perinatologist, and an anesthesiologist. An optimal approach includes prepregnancy genetic counseling, prenatal diagnostic procedures, and a treatment plan for delivery for both the mother and child. Recent retrospective studies show that even if strict guidelines are followed, these women are still at risk of postpartum bleeding. This occurs even if coagulation factor levels are normalized, either due to the pregnancy-induced rise of factor levels or by infusion of coagulation factor concentrates at the time of delivery. In this article, we describe our current diagnostic and clinical management of pregnancy and delivery in women with inherited bleeding disorders. We also briefly discuss possible interventions to improve the outcome of current strategies by increasing target factor levels during and after delivery.
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18
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Byrne B, Ryan K, Lavin M. Current Challenges in the Peripartum Management of Women with von Willebrand Disease. Semin Thromb Hemost 2021; 47:217-228. [PMID: 33636752 DOI: 10.1055/s-0041-1723797] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
For many women, pregnancy and childbirth represent their first major hemostatic challenges. Despite advancements in obstetric care, up to 2 to 5% of all deliveries are complicated by postpartum hemorrhage (PPH). To mitigate bleeding risk, physiological changes occur in pregnancy, including increases in plasma von Willebrand factor (VWF) and factor VIII levels. For women with von Willebrand disease (VWD), these physiological alterations are blunted or absent. As a result, women with VWD have a heightened risk of PPH, both primary (in the first 24 hours) and secondary (>24 hours to 6 to 12 weeks postpartum). Pregnancy and delivery management for women with VWD should therefore be carefully coordinated as part of a multidisciplinary team approach. In the absence of large-scale clinical trials, the management of women with VWD during pregnancy is guided by expert consensus guidelines. Clinical practices internationally are not uniform, and areas of considerable clinical uncertainty exist. Traditional peripartum plasma VWF thresholds for hemostatic cover and therapeutic targets are currently under scrutiny, as PPH is not eliminated in women with VWD who receive replacement therapy. The benefit and optimal duration of postpartum tranexamic acid have yet to be defined, and standardized methods of quantification of blood loss at the time of delivery are currently lacking. In this article, we review the evidence base to date and explore the current clinical challenges in the management of pregnant women with VWD.
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Affiliation(s)
- Bridgette Byrne
- Department of Obstetrics & Gynaecology, Coombe Women and Infants University Hospital, Dublin, Ireland.,Department of Obstetrics & Gynaecology, Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Kevin Ryan
- Department of Obstetrics & Gynaecology, Coombe Women and Infants University Hospital, Dublin, Ireland.,National Coagulation Centre, St. James' Hospital, Dublin, Ireland
| | - Michelle Lavin
- National Coagulation Centre, St. James' Hospital, Dublin, Ireland.,Irish Centre for Vascular Biology, School of Pharmacy & Biomolecular Sciences, Royal College of Surgeons in Ireland, Dublin, Ireland
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19
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Herrera-Rivero M, Stoll M, Hegenbarth JC, Rühle F, Limperger V, Junker R, Franke A, Hoffmann P, Shneyder M, Stach M, Nowak-Göttl U. Single- and Multimarker Genome-Wide Scans Evidence Novel Genetic Risk Modifiers for Venous Thromboembolism. Thromb Haemost 2021; 121:1169-1180. [PMID: 33592630 DOI: 10.1055/s-0041-1723988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Previous genome-wide association studies (GWASs) have established several susceptibility genes for venous thromboembolism (VTE) and suggested many others. However, a large proportion of the genetic variance in VTE remains unexplained. Here, we report genome-wide single- and multimarker as well as gene-level associations with VTE in 964 cases and 899 healthy controls of European ancestry. We report 19 loci at the genome-wide level of association (p ≤ 5 × 10-8). Our results add to the strong support for the association of genetic variants in F5, NME7, ABO, and FGA with VTE, and identify several loci that have not been previously associated with VTE. Altogether, our novel findings suggest that 20 susceptibility genes for VTE were newly discovered by our study. These genes may impact the production and prothrombotic functions of platelets, endothelial cells, and white and red blood cells. Moreover, the majority of these genes have been previously associated with cardiovascular diseases and/or risk factors for VTE. Future studies are warranted to validate our findings and to investigate the shared genetic architecture with susceptibility factors for other cardiovascular diseases impacting VTE risk.
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Affiliation(s)
- Marisol Herrera-Rivero
- Department of Genetic Epidemiology, Institute of Human Genetics, University of Münster, Münster, Germany
| | - Monika Stoll
- Department of Genetic Epidemiology, Institute of Human Genetics, University of Münster, Münster, Germany.,Department of Biochemistry, Genetic Epidemiology and Statistical Genetics, Maastricht University, Maastricht, The Netherlands
| | - Jana-Charlotte Hegenbarth
- Department of Genetic Epidemiology, Institute of Human Genetics, University of Münster, Münster, Germany
| | - Frank Rühle
- Department of Genetic Epidemiology, Institute of Human Genetics, University of Münster, Münster, Germany
| | - Verena Limperger
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Kiel/Lübeck, Germany
| | - Ralf Junker
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Kiel/Lübeck, Germany
| | - André Franke
- Institute for Clinical Molecular Biology, University Hospital Schleswig Holstein, Kiel, Germany
| | - Per Hoffmann
- Life and Brain Research Centre, University of Bonn, Bonn, Germany
| | - Maria Shneyder
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Kiel/Lübeck, Germany
| | - Michael Stach
- IT Service Centre, University Hospital Münster, Münster, Germany
| | - Ulrike Nowak-Göttl
- Institute for Clinical Chemistry and Coagulation Center, University Hospital Schleswig Holstein, Kiel/Lübeck, Germany
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20
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Limperger V, Kenet G, Kiesau B, Köther M, Schmeiser M, Langer F, Juhl D, Shneyder M, Franke A, Klostermeier UK, Mesters R, Rühle F, Stoll M, Steppat D, Kowalski D, Rocke A, Kuta P, Bajorat T, Torge A, Neuner B, Junker R, Nowak-Göttl U. Role of prothrombin 19911 A>G polymorphism, blood group and male gender in patients with venous thromboembolism: Results of a German cohort study. J Thromb Thrombolysis 2021; 51:494-501. [PMID: 32594420 PMCID: PMC7886710 DOI: 10.1007/s11239-020-02169-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
The role of the A>G polymorphism at position 19911 in the prothrombin gene (factor [F] 2 at rs3136516) as a risk factor for venous thromboembolism [VTE] is still unclear. To evaluate the presence of the F2 polymorphism in VTE patients compared to healthy blood donors and to adjust the results for common inherited thrombophilias [IT], age at onset and blood group [BG], and to calculate the risk of VTE recurrence. We investigated 1012 Caucasian patients with a diagnosis of VTE for the presence of the F2 rs3136516 polymorphism and compared these with 902 healthy blood donors. Odds ratios [OR] together with their 95% confidence intervals were calculated adjusted for F5 at rs6025, F2 at rs1799963, blood group, age and gender. In addition, we evaluated the risk of recurrent VTE during patient follow-up calculating hazard ratios [HR] together with their 95% CI. Compared with the AA wildtype, the F2 GG and AG genotypes (rs3136516) were associated with VTE (OR 1.48 and 1.45). The OR in F5 carriers compared to controls was 5.68 and 2.38 in patients with F2 (rs1799963). BG "non-O" was significantly more often diagnosed in patients compared to BG "O" (OR 2.74). VTE recurrence more often occurred in males (HR 2.3) and in carriers with combined thrombophilia (HR 2.11). Noteworthy, the rs3136516 polymorphism alone was not associated significantly with recurrence. In Caucasian patients with VTE the F2 GG/GA genotypes (rs3136516) were moderate risk factors for VTE. Recurrence was associated with male gender and combined thrombophilia.
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Affiliation(s)
- Verena Limperger
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany.
| | - Gili Kenet
- National Hemophilia Center, Institute of Thrombosis and Hemostasis, Sheba Medical Centre, Tel-Hashomer, Israel
- The Amalia Biron Research Institute of Thrombosis & Hemostasis, Tel Aviv University, Tel Aviv, Israel
| | - Bettina Kiesau
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Max Köther
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Malin Schmeiser
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Florian Langer
- Department of Hematology & Oncology, Univ. Hospital Hamburg, Hamburg, Germany
| | - David Juhl
- Institute of Transfusion Medicine, Univ. Hospital Kiel & Lübeck, Lübeck, Germany
| | - Maria Shneyder
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Andre Franke
- Institute of Clinical Molecular Biology, Christian-Albrechts-University of Kiel, Kiel, Germany
| | - Ulrich K Klostermeier
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Rolf Mesters
- Department of Medicine/ Hematology & Oncology, Univ. Hospital Münster, Münster, Germany
| | - Frank Rühle
- Institute of Human Genetics, Westfälische-Wilhelms-University, Münster, Germany
| | - Monika Stoll
- Institute of Human Genetics, Westfälische-Wilhelms-University, Münster, Germany
- Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, The Netherlands
| | - Dagmar Steppat
- Institute of Transfusion Medicine, Univ. Hospital Kiel & Lübeck, Lübeck, Germany
| | - Dorothee Kowalski
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Angela Rocke
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Piotr Kuta
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Tido Bajorat
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Antje Torge
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Bruno Neuner
- Department of Anesthesiology and Intensive Care Medicine, Charité - Universitätsmedizin Berlin, Campus Charité Mitte and Campus Virchow-Klinikum, Berlin, Germany
| | - Ralf Junker
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany
| | - Ulrike Nowak-Göttl
- UKSH, Institute of Clinical Chemistry, Hemostasis Unit, Arnold-Heller-Str. 3 Building 17, Kiel, 24105, Germany.
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21
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Weber B, Lackner I, Braun CK, Kalbitz M, Huber-Lang M, Pressmar J. Laboratory Markers in the Management of Pediatric Polytrauma: Current Role and Areas of Future Research. Front Pediatr 2021; 9:622753. [PMID: 33816396 PMCID: PMC8010656 DOI: 10.3389/fped.2021.622753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 02/19/2021] [Indexed: 11/13/2022] Open
Abstract
Severe trauma is the most common cause of mortality in children and is associated with a high socioeconomic burden. The most frequently injured organs in children are the head and thorax, followed by the extremities and by abdominal injuries. The efficient and early assessment and management of these injuries is essential to improve patients' outcome. Physical examination as well as imaging techniques like ultrasound, X-ray and computer tomography are crucial for a valid early diagnosis. Furthermore, laboratory analyses constitute additional helpful tools for the detection and monitoring of pediatric injuries. Specific inflammatory markers correlate with post-traumatic complications, including the development of multiple organ failure. Other laboratory parameters, including lactate concentration, coagulation parameters and markers of organ injury, represent further clinical tools to identify trauma-induced disorders. In this review, we outline and evaluate specific biomarkers for inflammation, acid-base balance, blood coagulation and organ damage following pediatric polytrauma. The early use of relevant laboratory markers may assist decision making on imaging tools, thus contributing to minimize radiation-induced long-term consequences, while improving the outcome of children with multiple trauma.
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Affiliation(s)
- Birte Weber
- Department of Traumatology, Hand-, Plastic- and Reconstructive Surgery, Center of Surgery, University of Ulm, Ulm, Germany
| | - Ina Lackner
- Department of Traumatology, Hand-, Plastic- and Reconstructive Surgery, Center of Surgery, University of Ulm, Ulm, Germany
| | - Christian Karl Braun
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany.,Department of Pediatrics, University Medical Center Ulm, Ulm, Germany
| | - Miriam Kalbitz
- Department of Traumatology, Hand-, Plastic- and Reconstructive Surgery, Center of Surgery, University of Ulm, Ulm, Germany
| | - Markus Huber-Lang
- Institute of Clinical and Experimental Trauma-Immunology, University Hospital of Ulm, Ulm, Germany
| | - Jochen Pressmar
- Department of Traumatology, Hand-, Plastic- and Reconstructive Surgery, Center of Surgery, University of Ulm, Ulm, Germany
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22
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Makatsariya A, Bitsadze V, Khizroeva J, Vorobev A, Makatsariya N, Egorova E, Mischenko A, Mashkova T, Antonova A. Neonatal thrombosis. J Matern Fetal Neonatal Med 2020; 35:1169-1177. [PMID: 32204642 DOI: 10.1080/14767058.2020.1743668] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Neonatal thromboembolism in pediatric patients is a rare but life-threatening condition mainly caused by combinations of at least 2 prothrombotic triggering risk factors such as the central venous lines, septic condition, and prematurity. Other risk factors include asphyxia, dehydration, liver dysfunction, inflammation, and maternal condition. Neonatal hemostatic system is different from one of the older children and adults. Coagulation proteins do not cross the placenta but are synthesized in the fetus from an early stage. In the term neonate, concentrations of several procoagulant proteins, particularly the vitamin K dependent and contact factors are reduced when compared with adults. Conversely, levels of antithrombin, heparin cofactor II and protein C and S are low at birth and fibrinolysis system is characterized by the decreased level of plasminogen and alpha-1-antiplasmin, increased tissue plasminogen activator. These features all tend to be gestational dependent and are more present in the preterm infant. Primarily in this context neonates appear to be at a higher risk of thrombosis than older children. Thrombotic complications reach their peak in the group of children born at 22-27 weeks. The role of inherited thrombophilic risk factors in neonatal VTE development is poorly defined. The presence of inherited and acquired thrombophilia in mother and newborn is also responsible for the development of thrombosis in neonates and should be considered. Thrombophilia in the mother can lead to increased coagulation potential and prethrombotic conditions during pregnancy, causing thrombotic vasculopathy at the placental level. The benefit of identifying thrombophilia in the sick preterm newborns who are in the group of risk for development of thrombotic complications may facilitate the thromboprophylaxis. Further research regarding assessment of risk factors, diagnostics and treatment strategy is required.
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Affiliation(s)
- Alexander Makatsariya
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Viktoriya Bitsadze
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Jamilya Khizroeva
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alexander Vorobev
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Natalya Makatsariya
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Elena Egorova
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alexander Mischenko
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Tamara Mashkova
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
| | - Alexandra Antonova
- Department of Obstetrics and Gynecology, I. M. Sechenov First Moscow State Medical University (Sechenov University), Moscow, Russia
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23
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Andersson NG, Rossing M, Fager Ferrari M, Gabrielaite M, Leinøe E, Ljung R, Mårtensson A, Norström E, Zetterberg E. Genetic screening of children with suspected inherited bleeding disorders. Haemophilia 2020; 26:314-324. [DOI: 10.1111/hae.13948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/07/2020] [Accepted: 02/10/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Nadine G. Andersson
- Department of Clinical Sciences Paediatrics Lund University Lund Sweden
- Centre for Thrombosis and Haemostasis Skåne University Hospital Malmö Sweden
- Department for Paediatric Haematology and Oncology Skåne University Hospital Malmö Sweden
| | - Maria Rossing
- Centre for Genomic Medicine Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
| | - Marcus Fager Ferrari
- Centre for Thrombosis and Haemostasis Skåne University Hospital Malmö Sweden
- Department of Translational Medicine Lund University Malmö Sweden
| | - Migle Gabrielaite
- Centre for Genomic Medicine Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
| | - Eva Leinøe
- Department of Haematology Rigshospitalet Copenhagen University Hospital Copenhagen Denmark
| | - Rolf Ljung
- Department of Clinical Sciences Paediatrics Lund University Lund Sweden
| | - Annika Mårtensson
- Department of Clinical Sciences Paediatrics Lund University Lund Sweden
- Department for Paediatric Haematology and Oncology Skåne University Hospital Malmö Sweden
| | - Eva Norström
- Department for Clinical Chemistry Skåne University Hospital Malmö Sweden
| | - Eva Zetterberg
- Centre for Thrombosis and Haemostasis Skåne University Hospital Malmö Sweden
- Department of Translational Medicine Lund University Malmö Sweden
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24
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Yang J, Yang H, Tang A, Liu X, Sun X, Ma J, Zhao J, Ming L. Trimester-specific reference intervals for kaolin-activated thromboelastography (TEG®) in healthy Chinese pregnant women. Thromb Res 2019; 184:81-85. [DOI: 10.1016/j.thromres.2019.09.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 09/06/2019] [Accepted: 09/28/2019] [Indexed: 12/29/2022]
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25
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Veen CSB, van der Reijken IS, Jansen AJG, Schipaanboord CWA, Visser W, de Maat MPM, Leebeek FWG, Duvekot JJ, Kruip MJHA. Severe postpartum haemorrhage as first presenting symptom of an inherited bleeding disorder. Haemophilia 2019; 25:1051-1058. [PMID: 31583797 DOI: 10.1111/hae.13846] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 08/11/2019] [Accepted: 08/23/2019] [Indexed: 11/30/2022]
Abstract
INTRODUCTION Postpartum haemorrhage (PPH) is the major cause of maternal death worldwide. Haemostatic abnormalities are independently associated with a significantly increased risk for severe PPH. In this study, the value of haemostatic evaluation in women with severe PPH was explored. AIM To investigate the occurrence of previously unknown inherited bleeding disorders in women with severe PPH. METHODS Women with severe PPH (blood loss of ≥2000 mL) between 2011 and 2017, referred to the haematology outpatient clinic for haemostatic evaluation, were retrospectively included. A bleeding disorder was diagnosed based on (inter)national guidelines, or when having a clear bleeding phenotype, not fulfilling any diagnostic criteria or laboratory abnormalities, this being classified as Bleeding of Unknown Cause (BUC). Logistic regression was used to model the association between diagnosis and obstetrical causes and risk factors for PPH. RESULTS In total, 85 women with PPH were included. In 23% (n = 16), a mild bleeding disorder was diagnosed, including low von Willebrand factor (Low VWF 8/16), platelet function disorders (PFD 5/16), BUC (2/16) and von Willebrand disease type 1 (1/16). No significant associations were found between obstetrical causes or risk factors for PPH and the presence of a bleeding disorder. CONCLUSION In 23% of women with severe PPH, a mild bleeding disorder was diagnosed, independent of obstetrical causes or risk factors for PPH. This implies that severe PPH can be the first clinical symptom of an inherited bleeding disorder. Therefore, to optimize clinical management, haemostatic evaluation after severe PPH is recommended.
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Affiliation(s)
- Caroline S B Veen
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Irene S van der Reijken
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - A J Gerard Jansen
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | | | - Willy Visser
- Department of Obstetrics & Gynaecology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Department of Vascular Medicine, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Moniek P M de Maat
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Frank W G Leebeek
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Johannes J Duvekot
- Department of Obstetrics & Gynaecology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Marieke J H A Kruip
- Department of Haematology, Erasmus University Medical Centre Rotterdam, Rotterdam, The Netherlands
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Kenet G, Cohen O, Bajorat T, Nowak-Göttl U. Insights into neonatal thrombosis. Thromb Res 2019; 181 Suppl 1:S33-S36. [DOI: 10.1016/s0049-3848(19)30364-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Revised: 03/13/2019] [Accepted: 03/19/2019] [Indexed: 02/07/2023]
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Delbrück C, Miesbach W. The Course of von Willebrand Factor and Factor VIII Activity in Patients with von Willebrand Disease during Pregnancy. Acta Haematol 2019; 142:71-78. [PMID: 31085919 DOI: 10.1159/000496820] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Accepted: 01/09/2019] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Women with von Willebrand disease (VWD) are at a higher risk of bleeding, which might affect the health of mother and child during pregnancy and the intra- and postpartum periods. This retrospective cohort study evaluates changes in the coagulation parameters von Willebrand factor antigen (VWF:Ag), von Willebrand ristocetin cofactor (VWF:RCo), and Factor VIII activity (FVIII:C) during pregnancy in patients with VWD. In total, 44 pregnancies of 38 patients were assessed (VWD type 1 n = 32, type 2A n = 3, type 2B n = 1, type 2 subtype unidentified n = 2). The patients' median age at childbirth was 32 years (range 22-40). RESULTS A significant increase in coagulation parameters was found in patients with VWD type 1 (VWF:Ag, VWF:RCo, and FVIII:C p = 0.000). In the third trimester, VWF:Ag and FVIII:C normalized in all patients with VWD type 1; in 3 patients VWF:RCo remained below the normal range. Patients with VWD type 2 showed a significant increase of VWF:Ag (p = 0.003) and FVIII:C (p = 0.011), and a non-significant increase of VWF:RCo (p = 0.097). In 4 of 9 pregnancies of patients with VWD type 2, all surveyed coagulation parameters normalized until the third trimester. CONCLUSION For the majority of the observed patients, the von Willebrand parameters increased during pregnancy.
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Affiliation(s)
- Christiane Delbrück
- Department of Haemostaseology and Haemophilia Centre, University Hospital Frankfurt, Frankfurt am Main, Germany
| | - Wolfgang Miesbach
- Department of Haemostaseology and Haemophilia Centre, University Hospital Frankfurt, Frankfurt am Main, Germany,
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28
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Liu Q, Xu C, Chen X, Wang J, Ke Z, Hu H. Establishing a reference range for thromboelastograph parameters in the neonatal period. Int J Lab Hematol 2019; 41:530-535. [PMID: 31062936 PMCID: PMC6850129 DOI: 10.1111/ijlh.13043] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 04/04/2019] [Accepted: 04/13/2019] [Indexed: 11/29/2022]
Abstract
Introduction Acquired coagulation disorders are a common cause of neonatal bleeding. The thromboelastograph (TEG) comprehensively assesses haemostatic processes in the body. Unfortunately, the reference range of TEG parameters in the neonatal period has not yet been evaluated, which limits the use of the TEG in neonates. In this study, we aimed to establish the reference range of TEG parameters for the neonatal period. Methods This study included 371 full‐term infants (≥37 weeks of gestation), and we divided these infants into three groups according to age as follows: 1, 2‐7 and 8‐28 days. We measured their peripheral blood using TEG, coagulation routine and platelet count tests. We analysed differences among the groups. Results The reference ranges for TEG parameters are presented as medians and reference ranges (2.5th and 97.5th percentiles) as follows: R (clot reaction time, seconds) 4.80 (2.80‐7.17), Angle (fibrin production rate) 69.90 (44.91‐78.89), K (clot kinetics, min) 1.40 (0.80‐4.50), MA (maximum amplitude, mm) 63.50(44.34‐74.66) and LY30 (lysis at 30 minutes, %) 0.10 (0.10‐6.95). There were significant differences in Angle, K, MA and LY30 values between the different neonatal day age groups. Conclusion This study preliminarily establishes a reference range for TEG parameters during the neonatal period. The age of a newborn had a large influence on TEG parameters. Additionally, we demonstrated a correlation between laboratory tests and TEG parameters for this age period. The reference values provided herein are meaningful for future studies.
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Affiliation(s)
- Qin Liu
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Chunfen Xu
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Xin Chen
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Jia Wang
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhunhui Ke
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Hongbing Hu
- Department of Blood Transfusion, Wuhan Children's Hospital (Wuhan Maternal and Child Healthcare Hospital), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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29
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Doyle AJ, Crowley MP, Hunt BJ. Perioperative management of antithrombotic treatment in children. Paediatr Anaesth 2019; 29:405-413. [PMID: 30848062 DOI: 10.1111/pan.13511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Revised: 09/12/2018] [Accepted: 09/18/2018] [Indexed: 01/19/2023]
Affiliation(s)
- Andrew J Doyle
- Thrombosis & Haemophilia Centre, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Maeve P Crowley
- Thrombosis & Haemophilia Centre, Guy's & St Thomas' NHS Foundation Trust, London, UK
| | - Beverley J Hunt
- Thrombosis & Haemophilia Centre, Guy's & St Thomas' NHS Foundation Trust, London, UK
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30
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deVeber GA, Kirton A, Booth FA, Yager JY, Wirrell EC, Wood E, Shevell M, Surmava AM, McCusker P, Massicotte MP, MacGregor D, MacDonald EA, Meaney B, Levin S, Lemieux BG, Jardine L, Humphreys P, David M, Chan AKC, Buckley DJ, Bjornson BH. Epidemiology and Outcomes of Arterial Ischemic Stroke in Children: The Canadian Pediatric Ischemic Stroke Registry. Pediatr Neurol 2017; 69:58-70. [PMID: 28254555 DOI: 10.1016/j.pediatrneurol.2017.01.016] [Citation(s) in RCA: 175] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Pediatric arterial ischemic stroke remains incompletely understood. Population-based epidemiological data inform clinical trial design but are scant in this condition. We aimed to determine age-specific epidemiological characteristics of arterial ischemic stroke in neonates (birth to 28 days) and older children (29 days to 18 years). METHODS We conducted a 16-year, prospective, national population-based study, the Canadian Pediatric Ischemic Stroke Registry, across all 16 Canadian acute care children's hospitals. We prospectively enrolled children with arterial ischemic stroke from January 1992 to December 2001 and documented disease incidence, presentations, risk factors, and treatments. Study outcomes were assessed throughout 2008, including abnormal clinical outcomes (stroke-related death or neurological deficit) and recurrent arterial ischemic stroke or transient ischemic attack. RESULTS Among 1129 children enrolled with arterial ischemic stroke, stroke incidence was 1.72/100,000/year, (neonates 10.2/100,000 live births). Detailed clinical and radiological information were available for 933 children (232 neonates and 701 older children, 55% male). The predominant clinical presentations were seizures in neonates (88%), focal deficits in older children (77%), and diffuse neurological signs (54%) in both. Among neonates, 44% had no discernible risk factors. In older children, arteriopathy (49% of patients with vascular imaging), cardiac disorders (28%), and prothrombotic disorders (35% of patients tested) predominated. Antithrombotic treatment increased during the study period (P < 0.001). Stroke-specific mortality was 5%. Outcomes included neurological deficits in 60% of neonates and 70% of older children. Among neonates, deficits emerged during follow-up in 39%. Overall, an initially decreased level of consciousness, a nonspecific systemic presentation, and the presence of stroke risk factors predicted abnormal outcomes. For neonates, predictors were decreased level of consciousness, nonspecific systemic presentation, and basal ganglia infarcts. For older children, predictors were initial seizures, nonspecific systemic presentation, risk factors, and lack of antithrombotic treatment. Recurrent arterial ischemic stroke or transient ischemic attack developed in 12% of older children and was predicted by arteriopathy, presentation without seizures, and lack of antithrombotic treatment. Emerging deficit was predicted by neonatal age at stroke and by cardiac disease. CONCLUSIONS This national data set provides a population-based disease incidence rate and demonstrates the protective effect of antithrombotic treatment in older children, and frequent long-term emerging deficits in neonates and in children with cardiac disorders. Further clinical trials are required to develop effective age-appropriate treatments for children with acute arterial ischemic stroke.
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Affiliation(s)
- Gabrielle A deVeber
- Division of Neurology, Child Health Evaluative Sciences Program, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada.
| | - Adam Kirton
- Department of Pediatrics, Alberta Children's Hospital, Calgary, Alberta, Canada
| | - Frances A Booth
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Jerome Y Yager
- Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada
| | | | - Ellen Wood
- Department of Pediatrics, Dalhousie University, Halifax, Nova Scotia, Canada
| | - Michael Shevell
- Department of Pediatrics, McGill University, Montreal, Quebec, Canada
| | - Ann-Marie Surmava
- Division of Neurology, Child Health Evaluative Sciences Program, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Patricia McCusker
- Department of Pediatrics, University of Manitoba, Winnipeg, Manitoba, Canada
| | | | - Daune MacGregor
- Department of Pediatrics, University of Toronto, Toronto, Ontario, Canada
| | - E Athen MacDonald
- Department of Pediatrics, Queen's University, Kingston, Ontario, Canada
| | - Brandon Meaney
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - Simon Levin
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
| | - Bernard G Lemieux
- Department of Pediatrics, University of Sherbrooke, Sherbrooke, Quebec, Canada
| | - Lawrence Jardine
- Department of Pediatrics, University of Western Ontario, London, Ontario, Canada
| | - Peter Humphreys
- Department of Pediatrics, Children's Hospital of Eastern Ontario, Ottawa, Ontario, Canada
| | - Michèle David
- Department of Pediatrics, University of Montreal, Montreal, Quebec, Canada
| | - Anthony K C Chan
- Department of Pediatrics, McMaster University, Hamilton, Ontario, Canada
| | - David J Buckley
- Department of Pediatrics, Janeway Children's Health and Rehabilitation Centre, St. John's, Newfoundland, Canada
| | - Bruce H Bjornson
- Department of Pediatrics, University of British Columbia, Vancouver, British Columbia, Canada
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