1.5 Qualitative and Quantitative White Blood Cell Disorders Flashcards
Which of the following is an unusual complication that may occur in infectious mononucleosis?
Hemolytic anemia
In a patient with HIV infection, one should expect to see:
Reactive lymphocytes
Which inclusions may be seen in leukocytes?
Döhle bodies
Which of the following is contained in the primary granules of the neutrophil?
Myeloperoxidase
What is the typical reference range for relative lymphocyte percentage in the peripheral blood smear from a 1-year-old child?
50%–70%
Qualitative and quantitative neutrophil changes noted in response to infection include all of the following except:
A. Neutrophilia
B. Pelgeroid hyposegmentation
C. Toxic granulation
D. Vacuolization
Pelgeroid hyposegmentation
Neutropenia is present in patients with which absolute neutrophil count?
Less than 1.5 × 10^9/L
The morphological characteristic(s) associated with Chédiak–Higashi syndrome is (are):
Giant lysosomal granules
The familial condition of Pelger–Huët anomaly is important to recognize because this disorder must be differentiated from:
A shift-to-the-left increase in immature granulocytes
SITUATION: A differential shows reactive lymphocytes, and the physician suspects that a viral infection is the cause. What is the expected laboratory finding in a patient with a cytomegalovirus (CMV) infection?
CMV–IgM: positive
Neutrophil phagocytosis and particle ingestion are associated with an increase in O2 utilization called respiratory burst. What are the two most important products of this biochemical reaction?
Hydrogen peroxide (H2O2) and superoxide anion (O2–)
Which of the morphological findings are characteristic of reactive lymphocytes?
A. High nuclear:cytoplasmic (N:C) ratio
B. Prominent nucleoli
C. Basophilic cytoplasm
D. All of these options
All of these options
