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Hemophilia Information and Courses from MediaLab, Inc.

These are the MediaLab courses that cover Hemophilia and links to relevant pages within the course.

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Laboratories Individuals

CLIA Hematology / Hemostasis Review
Hemophilia A, hemophilia B, and Von Willebrand's disease together constitute approximately what percentage of all hereditary coagulation disorders:View Page
Hemophilia A is associated with a deficiency in which coagulation factor:View Page
Hemophilia B or Christmas disease is the result of a hereditary deficiency in which coagulation factor:View Page

Fundamentals of Hemostasis
The difference between the coagulation disorders Hemophilia A and Hemophilia B lies in:View Page
Which of the following coagulation disorders can be attributed to a genetic platelet disorder, where giant platelets are commonly seen in the peripheral smear of an affected patient?View Page
Coagulation Disorders - Inherited

Inherited disorders are those which are considered to be inborn, and have some familial linkage. Hemophilia A is a deficiency of coagulation factor VIII. It is the most commonly encountered hereditary based coagulation disorder. Found almost exclusively in males, its pattern of inheritance is sex-linked recessive. This disorder presents clinically with hemorrhagic events ranging in severity from mild to severe. Patients often present with spontaneous bleeding into their joints, a classic symptom of this affliction. The treatment of Hemophilia A often involves the administration of commercial factor VIII products.

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Coagulation Disorders - Inherited

Hemophilia B is a deficiency of coagulation factor IX. Found almost exclusively in males, its pattern of inheritance is sex-linked recessive. This disorder presents almost identically to Hemophilia A in terms of symptoms, and has a very similar pattern of inheritance. Be sure to keep in mind that while similar, Hemophilia A and B are caused by a deficiency in different coagulation factors. The treatment of Hemophilia B involves therapeutic administration of Factor IX concentrates.

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Which of the following statements regarding coagulation disorders is incorrect?View Page