Hemostasis

Question 1

Vascular Phase

Answer 1

injury to blood vessels causes it to constrict, slowing blood flow.

Question 2

Platelets

Answer 2

injury to the endothelial lining causes platelets to adhere.
forms a temporary platelet called aggregation. Blood test time(BTT) is used to evaulate the primary stages of hemostasis. also done before surgery.

Question 3

Coagulation phase

Answer 3

involves a cascade of interactions between coagulation factors that convert from a temporary platelet plug to a fibrin clot.

Question 4

(Cp) Prothrombin time test(PT/INR)

Answer 4

is used to evaluate the extrinsic pathway. The test also monitors anticoagulant therapy, such as for patients on blood thinners: Documadin. Warfarin, and Heparin.

Question 5

(CP) INR: International normalized ratio

Answer 5

no matter where you get your blood tested, the ratios will always be calculated correctly to administer medications.

Question 6

(CP) Partial thromboplastin time(PTT)

Answer 6

is used to evaluate intrinsic pathways.
Note: Any coagulation test such as PTT/PT, must always be drawn from a vein never IV or capillary puncture.
PT/PTT, drawn from light blue top tube and fill completely.

Question 7

Fibrinolysis

Answer 7

The Breakdown and removal of the clot.

Question 8

Fibrinolysis Notes

Answer 8

As tissue repair begins, plasmin (an enzyme) breaks down the fibrin clot.
Fibirn Degradation product’s (FDPs) measurements monitors the rate of fibrinolysis.

Question 9

Hemostasis

Answer 9

Blood Vessels repair after injury