Question | Answer |
No increase in red cell mass, but a decrease in plasma volume | Relative Erythrocytosis |
Increase in red blood cell mass | Absolute Erythrocytosis |
Significant decrease in total body RBC mass | Anemia |
5 parts of the CBC | Erythrocyte Count
Hematocrit
Hemoglobin Concentration
RBC Indicies
Peripheral Smear Review |
Normal hematocrit | 45% or .45 |
Mean Corpuscular Volume
80-100 fL | Normal |
Mean Corpuscular Volume
< 80 fL | Microcytic |
Mean Corpuscular Volume
> 100 fL | Macrocytic |
Red cell diameter >8um
MCV >100
Oval or Round
Normochromic; no polychromasia | Macrocytosis |
RBC diameter <6 um
MCV <80 fL
Hypochromic | Microcytosis |
Red Cell Distribution Width represents... | Variation of red cell volume |
Anisocytosis | Variation in cell Size |
High RDW | Increase in heterogeneity of RBC size |
Low RDW | More uniform RBC population |
5 Normochromic, normocytic anemias | Anemia of Chronic disease
Immune hemolytic disease
Anemia of acute hemorrhage
Aplastic anemia
End organ failure |
3 Hypochromic, microcytic anemias | Iron deficiency anemia
Thalassemia
Long standing anemia of chronic disease |
3 Macrocytic, normochromic anemias | Vitamin B12/Folate deficiency
Refractory anemiaa / Myelodysplastic Syndrome (MDS)
Liver disease |
Immature red cells | Reticulocytes |
Reticulocytes often have ____ coloration | Blue
From RNA |
Formula for Corrected Reticulocyte Count | % observed Reticulosytes X Pt HCT
_________________________________
45 |