Erythrocytic Disorder

Question 1

Is the rate at which RBCs sediment in a period of 1 hour

hematology test that is a non-specific
measure of inflammation

Answer 1

ESR

Question 2

Cells are subjected to different concentrations of hypotonic solutions

Answer 2

OSMOTIC FRAGILITY TEST

Question 3

Electronic field is generated around the micro-aperture in which blood cells passes

cells create resistance in the electronic field as they pass through calibrated micro-aperture creates electronic pulse to be generated, amplified, measured and then mathematically calculated to create numerical value

Answer 3

Electronic Impedance Variation Principle

Question 4

Main function of hemoglobin

Answer 4

transport oxygen

Question 5

Blood is diluted in a solution of potassium ferricyanide and potassium cyanide.
o The potassium ferricyanide oxidizes hemoglobin to hemiglobin (Hi; methemoglobin)

Answer 5

Cyanmethemoglobin (hemiglobincyanide; HiCN) method

Question 6

technique may introduce

hemoconcentration, which will make hemoglobin concentration and cell counts too high.

Answer 6

Improper venipuncture

Question 7

technique may introduce

hemoconcentration, which will make hemoglobin concentration and cell counts too high.

Answer 7

Improper venipuncture

Question 8

Ratio of the volume of erythrocytes to that of the whole blood

Expressedeitherasapercentage(conventional)oras
a decimal fraction (SI units).

Answer 8

HCT

Question 9

Storage of hct

Answer 9

In blood kept at room temperature, swelling of erythrocytes between 6 and 24 hours raises the hematocrit and MCV.
o Cell counts and indices are stable for 24 hours at 4°C
(Brittin, 1969).

Question 10

The hematocrit reflects the concentration of red cells, not the total red cell mass.
T/F

Answer 10

True

Question 11

red-gray layer between the red cells and

plasma

Answer 11

Buffy coat

Question 12

The hematocrit is low in hydremia of pregnancy, but the total number of circulating red cells is not reduced.
T/F

Answer 12

True

Question 13

Hematocrit is unreliable as an estimate of anemia immediately after a loss of blood or immediately following transfusions.

Answer 13

True

Question 14

The hematocrit will be falsely low as a result of cell
shrinkage, but the hemoglobin and cell counts will not be
affected.

Answer 14

True

Question 15

The hematocrit will be falsely low as a result of cell
shrinkage, but the hemoglobin and cell counts will not be
affected.

Answer 15

True

Question 16

Is the average volume of red cells and is calculated from the hematocrit and red cell count

Answer 16

Mean cell volume

Question 17

Content (weight) of Hb of the average cell

• Calculated from the Hb concentration and the red cell count

Answer 17

Mean cell hemoglobin

Question 18

Two retic stain

Answer 18

Brilliant cresyl blue & methylene blue

Question 19

Characterized by a marked hypoplasia of marrow
erythroid elements in the setting of normal granulopoiesis
and thrombopoiesis.

Answer 19

PURE RED CELL APLASIA

Question 20

arisesecondarilytoneoplasms,
▪ particularly thymic tumors (thymomas) and large granular lymphocytic leukemia, drug exposures, or autoimmune disorders.

Answer 20

Pure red aplasia

Question 21

Aplastic anemia manifestation

Answer 21

Associatedwithpancytopenia:
▪ Anemia
▪ Neutropenia, and
▪ Thrombocytopenia

Question 22

The marrow failure stems from suppression or disappearance of multipotent myeloid stem cells.

The red cells are typically normocytic and normochromic, although slight macrocytosis is present
Splenomegaly is absent

Answer 22

Aplastic anemia