QuestionSBA
QuestionChoice
A deficiency in clotting factor IX would mean the patient has haemophilia B, not haemophilia A.
10007548
c
IX
QuestionChoice
Factor X deficiency would mean the patient had a rare genetic bleeding disorder. Haemophilia A is a deficiency in factor VIII.
10007549
d
X
QuestionChoice
Haemophilia A is deficiency in factor VIII rather than factor XI.
10007550
e
XI
QuestionChoice
Factor 7 deficiency would mean the patient has a rare genetic bleeding disorder, known as Alexander’s disease, not haemophilia A. Deficiency in factor VII would cause nosebleeds, easy bruising, prolonged bleeding following physical injury or surgery. It would rarely cause bleeding into joint spaces.
10007547
b
VII
QuestionChoice
Haemophilia A is caused by a deficiency of clotting factor VIII, an important part of the intrinsic component of the coagulation cascade. Haemophilia A typically presents with severe bleeding into soft tissues, muscles, and joints, and is diagnosed with a factor VIII assay.
10007546
a
VIII
Concept
Chapter
2693
3925
haemophilia
Topic
157
Haematology
14056
An 8-year-old female attends her GP surgery with recurrent haemarthrosis. She undergoes multiple blood tests and is diagnosed with haemophilia A.

Which of the following clotting factors is the patient deficient in?
a