Hematology mock board exam
Which of the following detects or measures platelet function? correct
answers bleeding time
A platelet count done by phase microscopy is 200 x 103/µL (200 x 109/L)
(reference range 150-450 x 103/µL (150-450 x 109/L). A standardized
template bleeding time on the same person is 15 minutes (reference range
4.5 ± 1.5 minutes). This indicates that: correct answers abnormal platelet
function should be suspected
In von Willebrand disease, platelets give an abnormal aggregation
result in the presence of: correct answers ristocetin
The following platelet aggregation tracing represents: correct answers
Glanzmann thrombasthenia
Refer to the following diagram:
In the platelet aggregation curves shown above, the aggregating agent
was added at the point indicated by the arrow. Select the appropriate
aggregation curve for recent aspirin ingestion. (Aggregating agent is ADP
or epinephrine.) correct answers C
Which of the following platelet responses is most likely associated with only
Glanzmann thrombasthenia? correct answers markedly decreased
aggregation to epinephrine, ADP and collagen
An automated platelet count indicates platelet clumping, which is
confirmed by examining the smear. The technician should: correct
answers recollect in sodium citrate
A bleeding time is used to evaluate the activity of: correct answers
platelets
Platelet aggregation will occur with the end production of:
correct answers thromboxane A2
Which one of the following is a true statement about megakaryocytes in a
bone marrow aspirate? correct answers an average of 1-3 should be found
in each low power field (10x)
Which of the following is most likely to be seen in lead poisoning?
correct answers basophilic stippling
, Which of the following is most closely associated with iron deficiency
anemia? correct answers chronic blood loss
The M:E ratio in erythroleukemia is usually: correct answers low
The hypoproliferative red cell population in the bone marrow of uremic
patients is caused by: correct answers decreased levels of circulating
erythropoietin
The direct antiglobulin test is often positive in: correct answers
acquired hemolytic anemia
Laboratory tests performed on a patient indicate macrocytosis, anemia,
leukopenia and thrombocytopenia. Which of the following disorders is the
patient most likely to have? correct answers vitamin B12 deficiency
Evidence indicates that the genetic defect in thalassemia usually results in:
correct answers a quantitative deficiency in RNA resulting in decreased
globin chain production
Which of the following represents characteristic features of iron metabolism
in patients with anemia of a chronic disorder?
TIBC:
result
A
normal
result
B
normal or
slightly result
C
normal
result
D
normal or
decreased Serum
iron:
normal
increase
d
increase
d normal
decrease
d
Transferrin
saturation normal
increased
markedly
increased
decreased
correct answers
result D
Which of the following is increased in erythrocytosis secondary to a
congenital heart defect? correct answers erythropoietin
Which of the following detects or measures platelet function? correct
answers bleeding time
A platelet count done by phase microscopy is 200 x 103/µL (200 x 109/L)
(reference range 150-450 x 103/µL (150-450 x 109/L). A standardized
template bleeding time on the same person is 15 minutes (reference range
4.5 ± 1.5 minutes). This indicates that: correct answers abnormal platelet
function should be suspected
In von Willebrand disease, platelets give an abnormal aggregation
result in the presence of: correct answers ristocetin
The following platelet aggregation tracing represents: correct answers
Glanzmann thrombasthenia
Refer to the following diagram:
In the platelet aggregation curves shown above, the aggregating agent
was added at the point indicated by the arrow. Select the appropriate
aggregation curve for recent aspirin ingestion. (Aggregating agent is ADP
or epinephrine.) correct answers C
Which of the following platelet responses is most likely associated with only
Glanzmann thrombasthenia? correct answers markedly decreased
aggregation to epinephrine, ADP and collagen
An automated platelet count indicates platelet clumping, which is
confirmed by examining the smear. The technician should: correct
answers recollect in sodium citrate
A bleeding time is used to evaluate the activity of: correct answers
platelets
Platelet aggregation will occur with the end production of:
correct answers thromboxane A2
Which one of the following is a true statement about megakaryocytes in a
bone marrow aspirate? correct answers an average of 1-3 should be found
in each low power field (10x)
Which of the following is most likely to be seen in lead poisoning?
correct answers basophilic stippling
, Which of the following is most closely associated with iron deficiency
anemia? correct answers chronic blood loss
The M:E ratio in erythroleukemia is usually: correct answers low
The hypoproliferative red cell population in the bone marrow of uremic
patients is caused by: correct answers decreased levels of circulating
erythropoietin
The direct antiglobulin test is often positive in: correct answers
acquired hemolytic anemia
Laboratory tests performed on a patient indicate macrocytosis, anemia,
leukopenia and thrombocytopenia. Which of the following disorders is the
patient most likely to have? correct answers vitamin B12 deficiency
Evidence indicates that the genetic defect in thalassemia usually results in:
correct answers a quantitative deficiency in RNA resulting in decreased
globin chain production
Which of the following represents characteristic features of iron metabolism
in patients with anemia of a chronic disorder?
TIBC:
result
A
normal
result
B
normal or
slightly result
C
normal
result
D
normal or
decreased Serum
iron:
normal
increase
d
increase
d normal
decrease
d
Transferrin
saturation normal
increased
markedly
increased
decreased
correct answers
result D
Which of the following is increased in erythrocytosis secondary to a
congenital heart defect? correct answers erythropoietin
