lecture 2 Flashcards Preview

hematology > lecture 2 > Flashcards

Flashcards in lecture 2 Deck (41):
1

what does PCV stand for

packed cell volume

2

what info can be derived from a PCV tube

hydration status

3

is a PCV more accurate than a total RBC count

yes

4

where is hemoglobin found

in RBCs

5

what is the main purpose of hemoglobin

carries oxygen

6

what does MCV stand for

mean corpuscular volume (fl)

7

what does MCHC stand for

mean corpuscular hemoglobin concentration (g/dl)

8

what is a macrocytosis

an increase of large young cells (high MCV)

9

what is microcytosis

a result of smaller RBCs (Low MCV)

10

what is normocytosis

size of RBC;s is appropriate in the species

11

what is anisocytosis

variation of sizes of cells because of macrocytes and microcytes

12

what is hypochromasisa

deceased MCHC

13

what is hyperchromasia

increase MCHC

14

normochromasia

normal color of RBCS

15

what is RDW

red cell distribution width

16

what is macrocytosis

increase RDW - anemia

17

what is microcytosis

increase RDW - low iron

18

6 things about canine erythrocytes

1. 7u diameter
2. biconcave discs
3. life span: 110 days
4. 1% of RBCs are polychromatophilic
5. no rouleaux in healthy dogs
6. puppies and kittens may have a microcytosis between 4 - 8 weeks of age due to iron deficiency

19

what is heterophils

neutrophils but for rabbits and birds, amphibians
-have granules that are large and stained deep orange to red

20

2 things about canine platelets

1. moderately variable in size
2. granules stain well

21

2 things about feline platelets

1. slightly activated are common in cats
2.stellate form with dendritic processes

22

1 things about bovine platelets

often high platelet counts in health, particularly in calves (1,000,000/ul blood)

23

what is erythropenia

a deficiency in the total number of RBC's

24

what is erythocytosis

an increase in total RBC number

25

what are the causes of eosinophilia

1.parasitism
2.hypersensitivity

26

what are the causes of eosinopenia

corticosteroids

27

what are the causes of neutrophilia

inflammation
bacterial infection
corticosteroids
physiologic stress

28

what are the causes of neutropenia

increased demand
decreased production
inffective granulopoiesis

29

what are the causes of basophilia

rarely occurs without eosinophilia
IgE0generating disorders

30

what are the causes of lymphocytosis

antigenic stimulation
lymphocytoic leukemia

31

what are the causes of lymphopenia

corticosteroids
combined immunodeficiency of arabian foals and basset hounds

32

what are the causes of monocytosis

corticosteroids

33

what are the causes of thrombocytosis

bleedings, iron-deficiency anemia, myeloproliferative disorders

34

what are the causes of thrombocytopenia

hemmorrhage
infectious agents
immune-mediated hemolytic anemia

35

if there is less an 100,000 thrombocytes /ul should you be concerned

yes red flag

36

is there is thrombocytes in between 20000 - 50,000 what will happen

spontaneous bleeding

37

what should we know about camelid RBCS

small, flat, oval, no nucleus
lifespan = 60 days

38

what should we know about caprine erythrocytes

4 u - diameter
lifepsan = 125 days
marked poikilocytosis in the blood of some goats (Angora) and in kids under 3 months of age

39

what should we know about bovine erythrocytes

5.7 u -diameter
lifespan = 160 days
- calves have marked poikilocytosis and microcytosis up to 1 yr of age (iron deficiency)
-rouleaux is rare

40

what should we know about equine RBCs

5.7 u
lack central pallor
lifespan 145 days
occasional howell-jolly bodies
-microcytosis is normal in foals i up to 1 yr of age

41

what is important about feline RBCs

- 5.8 u
lifespan 70 days
cats can have howell jolly bodies
can have rouleaux but not as must as horses
can have heinz bodies
hemoglobin of cats is more susceptible to oxidant injurg