Chapter 16 Interpreting Clinical Laboratory Data

Chapter 16  Interpreting Clinical Laboratory Data

Complete Chapter Questions And Answers
 

Sample Questions

MULTIPLE CHOICE

1. Which of the following is NOT one of the formed elements in the blood?
a.
leukocytes
b.
erythrocytes
c.
thrombocytes
d.
electrolytes

ANS: D
The complete blood count (CBC) is routinely performed from a venous blood sample and examines the formed elements in the blood. It provides a detailed description of the number of circulating white blood cells (WBCs), called leukocytes, red blood cells (RBCs), called erythrocytes, and platelets, called thrombocytes.

DIF: Recall REF: p. 358 OBJ: 2

2. What term is used to describe a white blood cell (WBC) count that is above normal values?
a.
leukocytosis
b.
leukopenia
c.
neutropenia
d.
polycythemia

ANS: A
Elevation of the WBC count is known as leukocytosis.

DIF: Recall REF: p. 358 OBJ: 2

3. What term is used to describe a white blood cell (WBC) count that is below normal values?
a.
anemia
b.
thrombocytopenia
c.
leukopenia
d.
hyponatremia

ANS: C
A WBC count that is below normal is known as leucopenia.

DIF: Recall REF: p. 358 OBJ: 2

4. Which of the following is NOT a cause of leukopenia?
a.
chemotherapy
b.
bone marrow disease
c.
radiation therapy
d.
antibiotics

ANS: D
Diseases of the bone marrow (e.g., leukemia, lymphoma) and chemotherapy and radiation therapy for cancer are common causes of leukopenia.

DIF: Recall REF: p. 358 OBJ: 2

5. What type of white blood cell increases in response to allergic reactions?
a.
neutrophils
b.
eosinophils
c.
lymphocytes
d.
monocytes

ANS: B
See Table 16-2 for a list of the normal differential counts in the adult patient and common causes for elevation of each cell type.

DIF: Recall REF: p. 359 OBJ: 2