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Updated: Jul 19, 2026

Determination of the Procoagulant Activity of Extracellular Vesicle (EV) Using EV-Activated Clotting Time (EV-ACT)
Published on: August 4, 2023
[Uncontrollable bleeding in a patient with head trauma treated with blood component therapy guided by
Mads Koch Hansen1, Marianne Kjaer Jensen, Claus Andersen
1Odense Universitetshospital, Anaestesiologisk og Intensiv Afdeling V.
Abstract:
This is a case report concerning a patient with traumatic uncontrolled bleeding. The patient was admitted with a severe head injury and facial fractures. During neurosurgery, the bleeding became life-threatening and there was a request for recombinant factor VIIa therapy (NovoSeven). Before the treatment, thromboelastography was performed. This showed platelet insufficiency, and after infusion of platelets, the bleeding was under control and there was no longer a need for recombinant factor VIIa therapy. We therefore recommend thromboelastography to evaluate coagulation status before treatment with recombinant factor VIIa.
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