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Review Question - QID 6021

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QID 6021 (Type "6021" in App Search)
Familial (Leiden) thrombophilia is of importance in joint arthroplasty because of an abnormality in the clotting cascade. Which of the following statements best describes the condition?

It is a disease caused by an abnormality of platelets that leads to increased blood clotting.

4%

23/558

It is a disease caused by an abnormality of vascular endothelium that leads to increased blood clotting.

3%

18/558

It is a disease caused by an abnormality of hepatic metabolism that leads to decreased production of factor V and decreased blood clotting.

5%

30/558

It is a disease caused by an abnormality of factor V that leads to decreased inactivation of factor Va by activated protein C (aPC) and increased blood clotting.

85%

477/558

It is a familial, genetic disease that requires placement of a Greenfield filter in all individuals who have the abnormality, prior to surgery.

1%

4/558

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Factor V Leiden is a disease caused by an abnormality of factor V in which a single amino acid substitution of glutamine for arginine in the protein C cleavage region leads to decreased inactivation of factor V and thus a greater tendency to form clots. More than half of all individuals with Factor V Leiden will develop deep venous thrombosis in the presence of a single additional risk factor such as long bone fracture or total joint arthroplasty.

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