Coagulation And Thrombocytes

Question 1

Stages of platelet hematopoiesis?

Answer 1

Megakaryoblast, promegakaryocyte, megakaryocyte, platelet

Question 2

Made of lit pink cytoplasm and distinct purple granules

Answer 2

Platelets

Question 3

Large platelets (immature)

Answer 3

Macro platelets

Question 4

Three main functions of platelets?

Answer 4

Clotting, preserve capillary walls, transport substances for clotting, and for constriction and dilation of blood vessels

Question 5

Are platelets larger or smaller than RBCs?

Answer 5

Smaller

Question 6

Platelets in ______ vary in size, shape and clumping

Answer 6

Cats

Question 7

Platelets in _____ are relatively uniform in size.

Answer 7

Dogs

Question 8

Macro platelets are normal in….

Answer 8

Cats

Question 9

What do macro platelets indicate in dogs?

Answer 9

Increased platelet use and a need for increased platelet production

Question 10

Normal platelet value for dogs.

Answer 10

150,000 plts/uL - 450,000 plts/uL

Question 11

Normal platelet values for cats.

Answer 11

200,000 plts/uL- 600,000 plts/uL

Question 12

Variation in the size of platelets.

Answer 12

Pleomorphic

Question 13

Cannot stop bleeding at this platelet count number.

Answer 13

50,000 plts/uL

Question 14

Increased of platelets.

Answer 14

Thrombocytosis

Question 15

Two causes of Thrombocytosis?

Answer 15

Injury/trauma/infection or steroids/splenectomy

Question 16

Decrease in number of platelets.

Answer 16

Thrombocytopenia

Question 17

Three main causes of thrombocytopenia?

Answer 17

Hormone disorder, disorders of platelet distribution, vitamin b12 injection

Question 18

Method one of platelet count.

Answer 18

Viewing 10 fields, averaging the fields and reporting them.

Question 19

Normal platelet per field?

Answer 19

7-10 platelets/hpf

Question 20

Method two ***** of platelet count?

Answer 20

Count and record in ten fields, average them, and times by 15,000 = platelets per microliter

Question 21

Cannot accurately count_____ platelets.

Answer 21

Clumped

Question 22

Small pinpoint hemorrhages.

Answer 22

Pettichia

Question 23

Blotches of hemmorage (usually abdomen)

Answer 23

Echymosis

Question 24

Visible bleeding.

Answer 24

Frank

Question 25

Hidden bleeding,

Answer 25

Occult bleeding

Question 26

Large amounts of blood

Answer 26

Profuse bleeding

Question 27

Steps of clotting?

Answer 27

1. Platelets plug, 2. Clotting factors reinforce plug, 3. Fibrin web acts like glue, 4. Other cells reinforce web

Question 28

Extrinsic

Answer 28

PT

Question 29

Intrinsic

Answer 29

PTT

Question 30

Five sizes/types of platelets?

Answer 30

Macro platelets, micro platelets, increased platelets, decreased platelets, clumped platelets

Question 31

Platelets size of a red cell.

Answer 31

Macro platelet

Question 32

The glue.

Answer 32

Fibrin

Question 33

What do you have to do when you see clumped fibrin?

Answer 33

Send the sample out

Question 34

Which organ produces the most clotting factors?

Answer 34

Liver