For moving exam

Question 1

Four areas of platelet

Answer 1

Peripheral zone
Sol-gel zone
Organelle
Membranous zone

Question 2

Diluent for Platelet Count

Answer 2

1% ammonium oxalate

Question 3

Is a screening procedure used to evaluate the vascular factor and the function of platelets and blood vessels.

Answer 3

Bleeding time by duke method

Question 4

Also one of the important procedures to detect and used for differential diagnosis hemorrhagic diseases

Answer 4

Bleeding Time by Duke method

Question 5

This is the test of choice in preoperative examination of patient schedule for surgery

Answer 5

Bleeding time by Duke method

Question 6

N.R. of bleeding time in duke method

Answer 6

2-4 minutes

Question 7

This is more reliable than the finger puncture method, for the skin of this is thin and subcutaneous tissue quiet vascular

Answer 7

Macfarlane method (Lobe of the ear)

Question 8

This method is more sensitive than the duke method and often gives an abnormal result while the duke method does not

Answer 8

Ivy’s method

Question 9

Puncture site of Ivy’s method

Answer 9

Two incisions/puncture at the volar surface of the forearm

Question 10

Abnormal clot retraction time is found in

Answer 10

Glanzmann’s thrombasthenia and Thrombocytopenia

Question 11

In ______ and ______ the formed clot will be small and there will be increase amount of cells expressed from the clot (RBC fallout)

Answer 11

Dysfibrinogenemia and Hypofibrinogenemia

Question 12

Clot retraction may be abnormal in ______ where the proteins interfere with fibrin formation.

Answer 12

Paraproteinemia

Question 13

In _____, the form clot will appear small and ragged, and there will be increased in RBC fallout.

Answer 13

Disseminated intravascular coagulation

Question 14

factors that affect clot retraction:

Answer 14

Fibrinogen
Platelets
Presence of WBC and RBC
Temperature
Thrombin

Question 15

factors that affect clot retraction:

the firmness of the depends on this concentration. If the level of this is increased the clot retraction is reduced

Answer 15

Plasma fibrinogen

Question 16

factors that affect clot retraction:

excessive number of this actually impedes clot retraction, although the count of this is directly proportional to the clot retraction.

Answer 16

platelet

Question 17

factors that affect clot retraction:

as the packed cell volume increased, the degree of clot retraction is reduced due to bulb of the cells

Answer 17

Presence of WBC and RBC

Question 18

factors that affect clot retraction:

the degree of clot retraction is directly proportional to the temp above ____ the reaction is inhibited

Answer 18

Temp - 42C

Question 19

factors that affect clot retraction:

the width of the fibrin strands varies inversely with the _______ concentration and the wider the strand are the poorer is the clot retraction. ____ coated fibrin is a surface to which platelet adhere

Answer 19

Thrombin