Chapter 9

What is hemostasis?

• The process of blood clotting

• The process of blood vessel repair

• The process of blood cell production

• The process of blood circulation

How many stages are involved in the repair process of hemostasis?

• Two

• Three

• Four

• Five

What happens during the vascular phase of hemostasis?

• Blood vessels constrict to slow down blood flow

• Platelets adhere to the injured endothelial lining

• Coagulation factors convert the platelet plug to a fibrin clot

• The fibrin clot is broken down and removed

What is the purpose of the platelet phase in hemostasis?

• To slow down blood flow

• To form a temporary platelet plug

• To convert the platelet plug to a fibrin clot

• To break down and remove the fibrin clot

Which test is used to evaluate the primary stages of hemostasis?

• Prothrombin time test (PT/INR)

• Partial thromboplastin time (PTT)

• Bleeding time test (BTT)

• Fibrin degradation product's (FDPs) measurement

What does the coagulation phase of hemostasis involve?

• A cascade of interactions between coagulation factors

• The breakdown and removal of the clot

• The adherence of platelets to the injured endothelial lining

• The constriction of blood vessels

Which pathway systems are involved in the coagulation cascade?

• Intrinsic and extrinsic

• Primary and secondary

• Vascular and platelet

• Fibrinolysis and aggregation

Which test is used to evaluate the extrinsic pathway of the coagulation cascade?

• Prothrombin time test (PT/INR)

• Partial thromboplastin time (PTT)

• Bleeding time test (BTT)

• Fibrin degradation product's (FDPs) measurement

What is the purpose of the fibrinolysis phase in hemostasis?

• To slow down blood flow

• To form a temporary platelet plug

• To convert the platelet plug to a fibrin clot

• To break down and remove the fibrin clot

What is the Hemochron® Signature Elite used for?

• To evaluate the primary stages of hemostasis

• To monitor anticoagulant therapy

• To measure the rate of fibrinolysis

• To perform point-of-care coagulation testing