Clinical Laboratory Hematology 3rd Edition By McKenzie – Test Bank

Chapter 11: Introduction to Anemia
Multiple-Choice Questions
Level I
1. A patient sample had a retic count of 5%. The patient’s hematocrit was 25%. Normal hematocrit is 45%. What is the corrected reticulocyte count?
a. 3.50%
b. 2.78%
c. 5%
d. 10%
Correct Answer: B
(Objective 1)
2. Normal hematocrit is 45%. What is the RPI for this patient with a reticulocyte count of 5% and hematocrit of 25%?
a. 2.39
b. 2.59
c. 1.39
d. 4.50
Correct Answer: C
(Objective 1)
3. All of the following laboratory tests can be used for evaluation of hemolysis except:
a. Haptoglobin
b. Hemopexin
c. Total protein
d. Bilirubin
Correct Answer: C
(Objective 2)
4. An instrument printout indicates that a patient has an RPI of 1.3, hemoglobin of 7 g/dL, and MCV of 112 fl. What can be concluded from this?
a. There is acute hemolysis present.
b. This is the result of iron deficiency.
c. The anemia is associated with renal disease.
d. There could be a nuclear maturation defect.
Correct Answer: D
(Objective 3)
5. Which of the following is best to measure RBC survival?
a. Using conjugated bilirubin
b. Using urine hemoglobin
c. Monitoring 51Cr labeled RBCs
d. Using reticulocyte count
Correct Answer: C
(Objective 3)
6. Which of the following laboratory values would best correlate with moderate polychromasia on the peripheral blood smear?
a. Decreased bilirubin
b. Increased RPI
c. Schistocytes on the PB smear
d. Low PLT count
Correct Answer: B
(Objective 4)
7. A patient presents with a RPI of >2 and macrocytic morphology of the red blood cells. Which survival defect does this most likely represent?
a. B12 deficiency
b. Folate deficiency
c. Hemorrhage or hemolysis
d. Myelodysplasia
Correct Answer: C
(Objective 7)
8. Which of the following laboratory tests could be used to help identify the cause of an anemia?
a. Platelet count
b. Haptoglobin concentration
c. RBC count
d. Absolute lymphocyte count
Correct Answer: B
(Objective 5)
9. A patient experiencing intravascular hemolysis would likely show which of the following:
a. Leukocytosis
b. Decreased reticulocyte count
c. Hemosiderinuria
d. Negative DAT
Correct Answer: C
(Objective 5)
10. The finding of a positive direct antiglobulin test (DAT) for a patient is likely to result in which of the following pathologies:
a. Increased bone marrow production of erythrocytes
b. Increased erythrocyte destruction
c. Decreased bone marrow production of erythrocytes
d. Liver disease
Correct Answer: B