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Anticoagulation therapy in children
Shoshana Revel-Vilk1, Anthony K C Chan
1Pediatric Hematology/ Oncology Unit, Hadassah Hebrew University Hospital, Jerusalem, Israel.
Insights
Pediatric thromboembolic events (TEs) are rare but serious, especially in vulnerable children. Differences in hemostasis impact treatment responses, necessitating pediatric-specific anticoagulant research.
Area of Science:
- Pediatric Hematology
- Thrombosis and Hemostasis
Background:
- Thromboembolic events (TEs) are increasingly recognized causes of morbidity and mortality in children.
- Children with serious conditions like congenital heart disease or cancer, and neonates, infants, and adolescents are at higher risk.
- Central venous lines and intra-arterial catheters are significant risk factors for pediatric TEs.
Purpose of the Study:
- To examine the impact of the developmental hemostatic system on anticoagulant responses in children.
- To highlight the differences between pediatric and adult hemostasis and their implications for thrombosis and treatment.
Main Methods:
- Review of current literature on pediatric thromboembolism.
- Analysis of hemostatic differences between pediatric and adult populations.
- Evaluation of commonly used anticoagulants in children (unfractionated heparin, low-molecular-weight heparins, warfarin).
Main Results:
- Pediatric hemostasis differs significantly from adult hemostasis, affecting thrombotic processes and anticoagulant efficacy.
- Established anticoagulant therapies in children are often extrapolated from adult studies.
- Limited experience exists with novel antithrombotic agents in pediatric populations.
Conclusions:
- Optimal anticoagulant therapy for pediatric thromboembolism requires further investigation.
- Well-designed prospective trials are essential to establish evidence-based treatment guidelines for children.
- Addressing the unique hemostatic characteristics of children is crucial for effective TEs management.
Abstract:
Thromboembolic events (TEs) in children are rare but are becoming a recognized cause of morbidity and mortality, particularly in children with serious underlying primary conditions such as congenital heart disease, cancer, or prematurity. Neonates, infants, and adolescents are most at risk for developing TEs among children, and the presence of a central venous line or intra-arterial catheter is the most significant risk factor for TEs in children. Hemostatic differences between children and adults affect both the pathophysiology of the thrombotic process and the response to anticoagulant therapy. In this article, we focus on the impact of the developmental hemostatic system on responses to anticoagulants in children. The most commonly used anticoagulants in children are unfractionated heparin, low-molecular-weight heparins, and warfarin. Minimal experience exists with the use of the new antithrombotic agents in children. As the anticoagulant treatment used for TEs in children is largely adopted from clinical trials performed in adult populations, well-designed prospective trials are required to establish the optimal therapy for children with TEs.
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