Related Experiment Video
Updated: Sep 4, 2026

Measurement of Factor V Activity in Human Plasma Using a Microplate Coagulation Assay
Published on: September 9, 2012
The use of recombinant factor VIIa in a patient with acquired haemophilia A undergoing surgery
H A Doughty1, A Northeast, L Sklair
1Haemophilia Centre, St Thomas' Hospital, London, UK.
Abstract:
An elderly woman with acquired haemophilia A secondary to a monoclonal gammopathy, required elective surgery for a parotid tumour but was unable to tolerate conventional treatment. Recombinant activated factor VII (rVIIa) was used successfully to cover a biopsy and then subsequent resection of the tumour. The use of rVIIa in the management of acquired inhibitors is discussed.
Related Concept Videos
Anticoagulant Drugs: Low-Molecular-Weight Heparins
Clot Retraction and Fibrinolysis
Venous Thrombosis III: Interprofessional Care
Hemodialysis I: Introduction

