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Updated: Jul 19, 2025

Tail Vein Transection Bleeding Model in Fully Anesthetized Hemophilia A Mice
Published on: September 30, 2021
Bleeding management: rFVIIIFc in hemophilia A and liver transplantation
Oliver Grottke1, Annette Rieg2, Florian Ulmer3
1Department of Anaesthesiology, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074, Aachen, Germany. grottke@ukaachen.de.
Background:
In patients with severe hemophilia A prolonged bleeding may occur even in cases of minor trauma or surgery.
Objective:
To investigate the feasibility and efficacy of a recombinant extended half-life (EHL) FVIII concentrate for perioperative bleeding management in a patient with severe hemophilia A undergoing liver transplantation.
Material And Methods:
Prior to transplantation FVIII activity and perioperatively required FVIII supply were estimated. In an individualized approach efmoroctocog alfa was supplemented if the intrinsic clotting time in the thrombelastometry was > 170 s.
Results:
The patient perioperatively received a total of 28,000 IU efmoroctocog alfa. No signs of hemorrhage or complications were detected and no further intervention was necessary.
Conclusion:
The present case demonstrates that the use of an EHL FVIII is suitable for a successful perioperative bleeding control even in hemophilia patients at a high bleeding risk during major surgery. Due to the EHL constant FVIII levels could be achieved with relatively few injections. In order to confirm the obtained results, more real-world data in different operative settings are essential. Further research is needed on the use of thrombelastometry to guide substitution of factor VIII perioperatively.
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