Hemostasis

Question 1

Lifetime of the platelets

Answer 1

5-10 days

Question 2

Platelets are attracted to collagen and undergo 3 reactions

Answer 2

Adhesion and shape change
Secretion
Aggregation

Question 3

This is important for the exposure of subendothelium and platelet adhesion

Answer 3

von Willebrand factor

Question 4

These are clinical signs in a patient with a disorder in their platelets

Answer 4

Petechiae
Ecchymoses
Mucous membrane bleeding

Question 5

Test for assessment of primary hemostasis

Answer 5

Platelet count (Higher than 30000)
Bleeding count (Normal is less than 4 minutes)

Question 6

The two most common tests used to evaluate the intrinsic pathway

Answer 6

Activating Clotting Time (ACT)
Activated partial thromboplastin time (PTT)

Question 7

Normal time for activating clotting time test

Answer 7

Between 60-90 minutes

Question 8

Extrinsic pathway is evaluated with this test

Answer 8

Prothrombin Time (PT)
Factors X, V, II, and I of the common pathway and factor VII of the extrinsic pathway

Question 9

There is the breed most commonly affected by a low concentration of the von Willebrand factor

Answer 9

Doberman Pinscher

Question 10

X linked factor: Hemophilia A y B
Test and the factor deficiency

Answer 10

A VIII
B IX

ACT and PTT elevated

Question 11

In rodenticide toxicity what tests are important to perform and how they will be

Answer 11

PT and PTT elevated

Question 12

Common pathway in the coagulation cascade

Answer 12

2 x 5 x 1 = 10

Factors I, II, V, and X

Question 13

Intrinsic pathway in the coagulation cascade

Answer 13

I shop at Walmart because everything is under $12. It’s always $11.98

Factors XII, XI, IX and VIII