Ch.9 Hemoglobin, PCV, and RBC endices

Question 1

PCV

Answer 1

the percentage of whole blood that is compromised of RBCs

Question 2

what are the layers in a microhematocrit tube once spun?

Answer 2

packed RBCs
buffy coat
plasma

Question 3

How do you estimate the RBC count if all you have is the PCV? (equation)

Answer 3

Divide the PCV by 6

Question 4

What is the PCV used for?

Answer 4

to indicate anemia

Question 5

What can a high PCV indicate?

Answer 5

dehydration

or polycythemia

Question 6

What is the normal PCV range for dogs?

Answer 6

37 - 55%

Question 7

What is a normal PCV range for cats?

Answer 7

30 - 45 %

Question 8

What is the functional unit of the RBC?

Answer 8

Hemoglobin

Question 9

When does hemoglobin synthesis occur?

Answer 9

During the maturation of RBCs in the bone marrow

Question 10

Once in circulation, there are 4 different types of hemoglobin, what are they?

Answer 10

1. OXYhemoglobin
2. METHEMOglobin
3. SULFhemoglobin
4. CARBOXYhemoglobin

Question 11

What is a normal hemoglobin value range in dogs?

Answer 11

12-20

Question 12

What is a normal hemoglobin value range in cats?

Answer 12

11-16

Question 13

What are the three different RBC indices?

Answer 13

1. MCHC - mean corpuscular hemoglobin concentration
2. MCV- mean corpuscular volume
3. MCH- mean corpuscular hemoglobin

Question 14

What does the MCV measure?

Answer 14

the average size of the RBCs

Question 15

What does the MCH measure?

Answer 15

it is the mean weight of hemoglobin (Hb) contained in the average RBC (measured in picograms- pg)

Question 16

What does MCHC measure?

Answer 16

it is the concentration of hemoglobin in the average RBC (measured in g/dL)