QuestionSBA
QuestionChoice
This is factor I, and is affected in disseminated intravascular coagulation. It is not a vitamin K-dependent factor.
10005553
c
Fibrinogen
QuestionChoice
This is involved in platelet aggregation for clot formation. It is not dependent on vitamin K.
10005555
e
Von Willebrand Factor
QuestionChoice
Warfarin is a vitamin K antagonist and so affects the vitamin K-dependant clotting factors, which are II, VII, IX and X (often remembered using by '1972').
10005551
a
Factor X
QuestionChoice
This is factor III and a co-factor of factor VII, which is not dependent on vitamin K.
10005554
d
Tissue Factor
QuestionChoice
This is affected in haemophilia A, and is not a vitamin K-dependant clotting factor.
10005552
b
Factor VIII
Concept
Chapter
2693
3928
coagulation cascade
Topic
157
Haematology
13657
A patient presents to ED with persistent epistaxis (nose bleed). He says he currently takes warfarin.

As warfarin inhibits vitamin K, which of the following clotting factors will be affected by taking warfarin?
a