1.2 Normocytic and Normochromic Anemias Flashcards
Hypersplenism is characterized by:
A. Polycythemia
B. Pancytosis
C. Leukopenia
D. Myelodysplasia
C. Leukopenia
Which of the following organs is responsible for the “pitting process” in RBCs?
A. Liver
B. Spleen
C. Kidney
D. Lymph nodes
B. Spleen
Spherocytes differ from normal RBCs in all of the following except:
A. Decreased surface to volume
B. No central pallor
C. Decreased resistance to hypotonic saline
D. Increased deformability
D. Increased deformability
Which of the following is not associated with HS?
A. Increased osmotic fragility
B. MCHC greater than 36%
C. Intravascular hemolysis
D. Extravascular hemolysis
C. Intravascular hemolysis
Which of the following disorders has an increase in osmotic fragility?
A. Iron deficiency anemia (IDA)
B. Hereditary elliptocytosis (HE)
C. Hereditary stomatocytosis
D. Hereditary spherocytosis (HS)
D. Hereditary spherocytosis (HS)
** The anemia seen in sickle cell disease is usually:**
A. Microcytic, normochromic
B. Microcytic, hypochromic
C. Normocytic, normochromic
D. Normocytic, hypochromic
C. Normocytic, normochromic
Which is the major Hgb found in the RBCs of patients with the sickle cell trait?
A. Hgb S
B. Hgb F
C. Hgb A2
D. Hgb A
D. Hgb A
Select the amino acid substitution that is responsible for sickle cell anemia.
A. Lysine is substituted for glutamic acid at the sixth position of the alpha-chain
B. Valine is substituted for glutamic acid at the sixth position of the Beta-chain
C. Valine is substituted for glutamic acid at the sixth position of the alpha-chain
D. Glutamine is substituted for glutamic acid at the sixth position of the Beta-chain
B. Valine is substituted for glutamic acid at the sixth position of the Beta-chain
All of the following are usually found in Hgb C disease except:
A. Hgb C crystals
B. Target cells
C. Lysine substituted for glutamic acid at the sixth position of the Beta-chain
D. Fast mobility of Hgb C at pH 8.6
D. Fast mobility of Hgb C at pH 8.6
Which of the following Hgbs migrates to the same position as Hgb A2 at pH 8.6?
A. Hgb H
B. Hgb F
C. Hgb C
D. Hgb S
C. Hgb C
Which of the following electrophoretic results is consistent with a diagnosis of the sickle cell trait?
A. Hgb A: 40%, Hgb S: 35%, Hgb F: 5%
B. Hgb A: 60%, Hgb S: 40%, Hgb A2: 2%
C. Hgb A: 0%, Hgb A2: 5%, Hgb F: 95%
D. Hgb A: 80%, Hgb S: 10%, Hgb A2: 10%
B. Hgb A: 60%, Hgb S: 40%, Hgb A2: 2%
In which of the following conditions will autosplenectomy most likely occur?
A. Thalassemia major
B. Hgb C disease
C. Hgb SC disease
D. Sickle cell disease
D. Sickle cell disease
Which of the following is most true of paroxysmal nocturnal hemoglobinuria (PNH)?
A. It is a rare acquired stem cell disorder that results in hemolysis
B. It is inherited as a sex-linked trait
C. It is inherited as an autosomal dominant trait
D. It is inherited as an autosomal recessive trait
A. It is a rare acquired stem cell disorder that results in hemolysis
Hemolytic uremic syndrome (HUS) is characterized by all of the following except:
A. Hemorrhage
B. Thrombocytopenia
C. Hemoglobinuria
D. Reticulocytopenia
D. Reticulocytopenia
The autohemolysis test result is positive in all of the following conditions except:
A. Glucose-6-phosphate dehydrogenase (G6PD) deficiency
B. HS
C. Pyruvate kinase (PK) deficiency
D. PNH
D. PNH