- Lymphocytopenia means a
A. total increase in leukocytes
B. total increase in lymphocytes
C. total increase in the absolute value or percentage of lymphocytes
D. total decrease in lymphocytes
D. total decrease in lymphocytes
- Radiation exposure results in
A. lymphocytosis
B. lymphocytopenia
B. lymphocytopenia
- Cytotoxic drugs results in
A. lymphocytosis
B. lymphocytopenia
B. lymphocytopenia
- Examples of viral diseases with lymphocyte involvement include
A. infectious mononucleosis
B. cytomegalovirus (CMV) infection
C. acquired immunodeficiency syndrome (AIDS)
D. all of the above
D. all of the above
- Infectious mononucleosis results in
A. lymphocytosis
B. lymphocytopenia
A. lymphocytosis
- Whooping cough results in
A. lymphocytosis
B. lymphocytopenia
A. lymphocytosis
Toxoplasmosis results in
A. lymphocytosis
B. lymphocytopenia
A. lymphocytosis
The helper subset of T lymphocytes is _______ in AIDS.
A. increased
B. decreased
C. not altered
D. not predictable
B. decreased
Immune deficiency disorders result in
A. lymphocytosis
B. lymphocytopenia
B. lymphocytopenia
Which of the following characterizes infectious mononucleosis?
A. Etiology: EBV
B. A T-cell disorder
C. A greater incidence in Africa
D. Nonheterophil antibodies
A. Etiology: EBV
The laboratory findings in infectious mononucleosis are generally characterized by
A. an increase in variant lymphocytes
B. a heterophil titer less than 1:56
C. no agglutination of the patient’s serum with horse erythrocytes
D. all of the above
A. an increase in variant lymphocytes
EBV infects lymphocytes by attaching to what receptor?
A. CD4
B. CD8
C. CD21
D. TCR
A. CD4
- On a peripheral blood smear examination, the variant (atypical) lymphocytes have the characteristics of __________ origin.
A. T-cell
B. B-cell
C. monocytic
D. macrophage
A. T-cell
- The EBV virus infects
A. T cells
B. B cells
C. monocytes
D. macrophages
B. B cells
- Which of the following characterizes reactive lymphocytosis?
A. An adult disorder
B. Leukocytopenia in the early stages
C. Lymphocyte counts of 20 to 50 × 10^9/L
D. Lymphoblasts on the peripheral blood smear
C. Lymphocyte counts of 20 to 50 × 10^9/L
Which of the following are characteristics of CMV infection?
A. Etiology: a herpes family virus
B. Lymphocytopenia
C. A positive heterophil test result
D. Both A and B
A. Etiology: a herpes family virus
AIDS is caused by
A. a herpes family virus
B. CMV
C. HIV-1
D. EBV
C. HIV-1
Which of the following generally characterize(s) toxoplasmosis?
A. Symptoms may resemble infectious mononucleosis
B. Occurrence in pregnant women who own cats
C. Etiology: parasitic
D. All of the above
D. All of the above
Which antibody test has replaced the LE cell preparation in the diagnosis of SLE?
A. Rheumatoid arthritis factor
B. ANA test
C. Complement fixation test
D. Antibody Smith test
B. ANA test
After reviewing Case 19.1, the patient’s swollen lymph nodes are indicative of
A. lymphocyte proliferation in lymphoid tissue
B. antibody production
C. retention of body fluids due to fever
D. a sore throat
A. lymphocyte proliferation in lymphoid tissue
. After reviewing Case 19.2, the child’s absolute lymphocyte count
is
A. 28 × 10^9/L
B. 22 × 10^9/L
C. 18 × 10^9/L
D. 8 × 10^9/L
B. 22 × 10^9/L
After reviewing Case 19.3, the condition being experienced by this child is most likely
A. bacterial
B. viral
C. fungal
D. parasitic
B. viral
After reviewing Case 19.4, the patient is exhibiting
A. leukopenia
B. leukocytosis
C. absolute neutrophilia within the reference range
D. relative eosinophilia
C. absolute neutrophilia within the reference range
