MT (AAB) Hematology
A "shift to the left" refers to which of the following? - ANS-immature myelogenous cells
A 27 year old female complains of mucous membrane bleeding
PT 40.2
INR 4.0
PTT 158.5
Fibrinogen 73
D-Dimer 5.46
These lab results are consistent with which disease? - ANS-disseminated intravascular
coagulopathy
A blood smear shows 80 nucleated RBC's per 100 leukocytes. The total leukocyte count
is 18.0 x 10^9/L. What is the corrected WBC count - ANS-10.0
A cerebrospinal fluid has 285 red blood cells counted in the 5 red blood cell squares
after being diluted in a Unopette (1:100) What is the calculated red blood cell count/uL?
- ANS-1,425,000
A leukocyte count greater than the linearity of the automated analyzer will falsely
elevate which other CBC parameter? - ANS-HGB
A macrocytic anemia characteristically accompanies all of the following EXCEPT which
one? - ANS-iron deficiency
A peripheral blood smear demonstrating an absolute increase in small, mature
lymphocytes and smudge cells is suggestive of which clinical condition - ANS-chronic
lymphocytic leukemia
A peripheral blood smear from a patient with thalassemia would exhibit which of the
following? - ANS-target cells, basophilic stippling, teardrop cells
A prolonged bleeding time with a normal platelet count indicates all of the following
EXCEPT which one? - ANS-Bernard-Soulier syndrome
Acute leukemias are associated with all of the following EXCEPT which one? -
ANS-smudge cells
,Acute lymphocytic leukemias that have a predominance of homogeneous cells with a
high N/C ratio belong to which FAB group - ANS-L1
After centrifuging a microhematocrit, the presence of lipemia is noted. What is the most
appropriate correction action? - ANS-perform a saline replacement procedure
All of the following are characteristic of a bone marrow of Waldenstrom's
macroglobulinemia EXCEPT which one? - ANS-increased megakaryocytes
All of the following are indications of anemia EXCEPT which one? - ANS-decreased
PLT
All of the following factor activation's occur in the alternate pathway EXCEPT which
one? - ANS-Factor XII activates prekallikrein
All of the following may cause a falsely decreases platelet count Except Which one? -
ANS-schistocytes
All of the following sources of error will falsely elevate the erythrocyte sedimentation
rate EXCEPT which one? - ANS-polycythemia
All of the following tests are associated with the diagnosis of paroxysmal nocturnal
hemoglobinuria EXCEPT which one? - ANS-osmotic fragility test
An increase in the erythrocyte sedimentation rate can be the result of an increase in the
quantity of which of the following? - ANS-fibrinogen
An increased osmotic fragility is observed in which type of hemolytic anemia? -
ANS-hereditary spherocytosis
Any cell that passes through the aperture will momentarily increase the resistance of the
electrical flow between the electrodes, generating a pulse. This is the basic principle of
which of the following? - ANS-electrical impedence
At what stage will specific (Secondary) granules of polyporphonuclear cells appear? -
ANS-promyelocytes
Auer rods are characteristically found in the cells of which leukemia - ANS-acute
myelogenous leukemia
, Basophilic stippling refers to which one of the following? - ANS-aggregated RNA in the
RBC
Bernard-Soulier syndrome is a platelet disorder that has what type of abnormality
associated with it? - ANS-abnormal adhesion
Both nucleated RBC's and large platelets interfere with which one of the following
parameters? - ANS-WBC
Chronic blood loss can lead to what kind of anemia - ANS-iron deficiency anemia
Classic hemophilia is the result of a deficiency of which coagulation factor? -
ANS-Factor VIII
Desmopressin acetate (DDAVP) is used in the treatment of which disorder? - ANS-von
Willebrand's disease
Diagnosis of von Willebrand's disease can be made from all the following test results: -
ANS-decreased VIII:C, decreased VIIIR:Co, prolonged bleeding time (not decreased
platelets)
Disseminated intravascular coagulopathy is associated with all of the following disorders
EXCEPT which one? - ANS-hemophilia
Dohle bodies are found in the cytoplasm of which cells? - ANS-neutrophils
During examination of a spun hematocrit, in which layer are the WBC's found? -
ANS-buffy coat
Eosinophilia may be found in all of the following conditions EXCEPT which one? -
ANS-erythroleukemia
Factor X is associated with which coagulation pathway? - ANS-common pathway
Factor XII is most commonly activated by exposure to which one of the following? -
ANS-subendothelium
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