factor VIII

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Definition

Noun: 1. A specific blood clotting protein: Factor VIII is a protein in the blood plasma that is essential for the normal clotting of blood. It acts as a cofactor for another clotting factor (Factor IX) in the coagulation cascade. 2. A deficient substance in Hemophilia A: The absence or dysfunction of this specific factor is the cause of the inherited bleeding disorder known as Hemophilia A.

Usage Examples
  • Noun:
    • Patients with severe Hemophilia A have less than 1% of normal factor VIII activity in their blood.
    • The doctor ordered an infusion of recombinant factor VIII to control the bleeding episode.
    • Laboratory tests measure the level of factor VIII to diagnose the severity of the clotting disorder.
Advanced Usage
  • "Factor VIII concentrate": A therapeutic product derived from human plasma or produced recombinantly, used to treat or prevent bleeding in individuals with Hemophilia A.
    • Prophylactic treatment with factor VIII concentrate has significantly improved the quality of life for many patients.
  • "Factor VIII inhibitor": An antibody developed by some patients with Hemophilia A that neutralizes infused factor VIII, making treatment less effective.
    • The development of a factor VIII inhibitor is a serious complication of treatment.
Variants and Related Words
  • Antihemophilic factor (AHF): An older, alternative name for factor VIII.
  • Hemofil: A historical brand name for a plasma-derived factor VIII concentrate.
  • Coagulation factor VIII: The full technical term.
  • FVIII: A common abbreviation used in medical literature.
Synonyms
  • Antihemophilic factor (AHF)
  • Coagulation factor VIII

Note: While "Hemofil" is listed as a trade name in the reference, it is a specific product brand and not a general synonym for the protein itself.

Noun
  1. a coagulation factor (trade name Hemofil) whose absence is associated with hemophilia A

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