Anemia Flashcards
How is MCV calculated?
Hematocrit / RBC count
What is the unit of MCV
FL
Unit of measuring hemoglobin level?
g/dl
Unit of measuring RBC count?
Millions/mm^3
How is MCH measured?
Hemoglobin level / RBC count
How is MCHC measured?
Hemoglobin level / Hematocrit
Normal value of RDW?
<15%
What is anisocytosis ?
RDW >15% (RBCs of different sizes)
What stain do we use for a peripheral blood smear?
Giemsa
Normal range for reticulocytes?
0.5~1.5%
Normal range for corrected reticulocytes ?
2-3
Where is iron absorbed ?
Duodenum
What is poikilocytosis?
RBCs having different shapes
Signs of anemia (not symptoms)
Koilonychia
Pica
Tachycardia
What viruses target erythropoietic stem cells?
HIV,HBV,EBV,CMV,B19
Inheritance pattern of fanconi anemia?
Autosomal recessive
How to treat aplastic anemia?
Bone marrow transplant
Causes of pancytopenia?
Aplastic anemia and megaloblastic anemia
What PNH stand for?
Paroxysmal nocturnal hemoglobinuria
Which is more common; intravascular or extravascular hemolytic anemia?
Extravascular
Inheritance pattern of hereditary spherocytosis?
Autosoma ; 75% dominant
25% recessive > worse
Inheritance pattern of HbS and HbC diseases
Autosomal recessive
What is most common familial hemolytic anemia in the world?
Sickle cell
Describe the mutation leading to sickle cell disease?
Point mutation causing glutamate to be replaced for valine
Describe the mutation leading to HbC?
Point mutation causing glutamate to be replaced for lysine
Signs of extra-medullary hematopoiesis
Hepatospleenomegaly
How to identify thalassemia on a blood smear?
Target cell + Basophilic stippling
Inheritance pattern of thalassemia?
Autosomal recessive
Hemoglobin level of major thalassemia ?
3-6 g/dl
Hemoglobin level of minor thalassemia ?
9-11 g/dl
What is favism?
The reaction of G6PD deficiency patients when eating fava beans
Inheritance pattern of G6PD?
X linked
Features of G6PD blood smear?
Heinz bodies > Bite cells
What does MAHA look like on a blood smear?
Schistocytes
How many people suffer from G6PD?
200 million