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New anticoagulants in children
1Children's Hospital Los Angeles, Los Angeles, CA 90027, USA. gyoung@chla.usc.edu
Insights
Pediatric thromboembolic events are rising, increasing anticoagulant use. Novel agents may offer improved safety and efficacy over traditional options like heparin and warfarin.
Area of Science:
- Pediatric Thrombosis and Anticoagulation
- Pharmacology and Therapeutics
Background:
- Increasing incidence of thromboembolic complications in pediatric patients.
- Widespread use of anticoagulants like heparin, low-molecular-weight heparins (LMWH), and warfarin in children.
- Limitations of traditional anticoagulants in pediatric populations.
Observation:
- Novel anticoagulants, including direct thrombin inhibitors and fondaparinux, show promise for pediatric use.
- Adult approvals for novel agents suggest potential for enhanced safety and efficacy.
- Limited pediatric data for novel agents, primarily case reports until recently.
Findings:
- Clinical trials for bivalirudin and argatroban (direct thrombin inhibitors) are complete.
- A clinical trial for fondaparinux (selective factor Xa inhibitor) is ongoing.
- This review compares traditional anticoagulants with novel agents and trial results.
Implications:
- Potential for improved treatment strategies for pediatric thromboembolism.
- Need for further research and clinical trials to establish safety and efficacy of novel agents in children.
- Guidance for clinicians on the evolving landscape of pediatric anticoagulation.
Abstract:
Thromboembolic complications are increasing in children and the use of anticoagulation has seen a dramatic increase despite the lack of randomized clinical trials. The most widely used agents in children are heparin, low-molecular-weight heparins (LMWH), and warfarin. These agents, however, have significant limitations that are exaggerated in children. Novel anticoagulants such as direct thrombin inhibitors and the selective factor Xa inhibitor, fondaparinux, have been approved for use in adults and have properties that suggest they may be safer and more efficacious than the standard agents; however, until recently, publications using these agents in children were limited to case reports. Recently, clinical trials for two direct thrombin inhibitors, bivalirudin and argatroban, have been completed and a clinical trial of fondaparinux is under way. This review will compare the standard agents with the novel agents and briefly review the results of the clinical trials.
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