Coagulation disorders in children
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Updated: Nov 7, 2026

Determination of the Procoagulant Activity of Extracellular Vesicle (EV) Using EV-Activated Clotting Time (EV-ACT)
Published on: August 4, 2023
1Division of Pediatric Hematology/Oncology, New York Hospital-Cornell Medical Center, NY 10021.
Insights
Recent advancements in coagulation research highlight controversies in vitamin K prophylaxis for newborns. New insights into thrombopoiesis growth factors and the role of protein C in thrombosis are also discussed.
Area of Science:
- Hematology
- Thrombosis Research
- Pediatric Medicine
Background:
- The field of coagulation is dynamic, with ongoing research into critical aspects of hemostasis and thrombosis.
- Understanding newborn hemostasis is crucial for preventing bleeding disorders.
Purpose of the Study:
- To review significant recent developments in coagulation science.
- To highlight key areas of ongoing research and debate, including vitamin K prophylaxis, thrombopoiesis, and thrombosis.
- To synthesize current knowledge on the role of protein C in thrombotic events.
Main Methods:
- Literature review of recent publications in coagulation and thrombosis.
- Focus on key areas: vitamin K prophylaxis controversies, thrombopoiesis growth factors, and protein C in thrombosis.
- Synthesis of emerging data and established findings.
Main Results:
- Emerging controversies surround the optimal vitamin K prophylaxis for newborn infants.
- Increased understanding of growth factors regulating thrombopoiesis (platelet production) has been achieved.
- The specific role of protein C in the development of thrombosis is becoming clearer.
Conclusions:
- Vitamin K prophylaxis in newborns remains an area of active discussion and research.
- Advances in understanding thrombopoiesis offer potential therapeutic targets.
- Further elucidation of protein C's function is critical for managing thrombotic disorders.
Abstract:
Many new developments have taken place in the field of coagulation during the past year. We focus on the interesting new controversies surrounding vitamin K prophylaxis of the newborn infant, on the increasing information regarding the growth factors responsible for thrombopoiesis, and on the role of protein C in the genesis of thrombosis.
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