|Hæmophilia & Von Willebrand's
Disease & Oral Surgery
Patients with Hæmophilia (Factors VIII & IX
Deficiencies) & Von Willebrand's Disease
Hæmophilia is a group of hereditary genetic disorders that
impair the body's ability to control coagulation (blood
Hæmophilia A (Clotting Factor VIII deficiency) is the most
common form of the disorder (1 in 5,000 – 10,000 male
Hæmophilia B (Clotting Factor IX deficiency) is rarer than
Hæmophilia A, occuring in around 1 in about 20,000 –
34,000 male births.
Hæmophilia lowers blood plasma clotting factor levels of
the coagulation factors needed for normal coagulation.
When a blood vessel is injured, a clot does form but the
missing coagulation factors prevent fibrin formation, which is
necessary to maintain the blood clot.
A hæmophiliac does not bleed more intensely than a person
without it but can bleed for a much longer time. In severe
cases, even a minor injury can result in bleeding that can last
days - weeks or there is incomplete healing. In areas such
as the brain or inside joints, this can be fatal or permanently
|Last Updated 26th February 2014