FINAL Flashcards
The structural domain of the VWF monomer that binds platelet receptor GPIIb/IIIa.
a. Domain D
b. Domain C
c. Domain B
d. Domaine A
B - Domain C
The four glycoproteins that are required to form the GP Ib/IX/V complex include:
a. GP Ibα, GP V, GPIIIa, GP X
b. GP Ibα, GP Ibβ, GP Ib, GP IX
c. GP Ibα, GP Ibβ, GP IX, GP V
d. GP Ibα, GP Ibβ, GP X, GP V
C - GP Ibα, GP Ibβ, GP IX, GP V
In reactive thrombocytosis, platelet production remains responsive to normal regulatory stimuli
such as thrombopoietin. This is contrasted with essential thrombocythemia by:
a. Unregulated platelet production
b. Platelets of variable size
c. Increased rate of platelet production
d. NOTA
e. AOTA
E - AOT
What is the definition of antithrombin (AT) deficiency in terms of AT activity levels or antigen
concentration?
a. AT activity levels less than 50% of normal
b. AT activity levels less than 70% of normal or antigen concentration less than 22 mg/dL
c. AT antigen concentration less than 10 mg/dL
d. AT antigen concentration less than 20 mg/dL
B - AT activity levels less than 70% of normal or antigen concentration less than 22 mg/dL
Which factors does the PT effectively monitor during Coumadin therapy?
a. Factors II, V, and VIII
b. Factors II, VII, and X
c. Factors III, VI, and IX
d. Factors VII, IX, and XII
B - Factors II, VII, and X
What is the specimen size typically used by point-of-care coagulometers to generate PT/INR
results?
a. 1 to 5 uL of whole blood
b. 10 to 50 uL of whole blood
c. 100 to 200 mL of whole blood
d. 500 to 1000 mL of whole blood
B - 10 to 50 uL of whole blood
Which principle do coagulation instruments apply for clot detection?
a. Observing the clot formation
b. Detecting the clot by feel
c. Both A and B
d. None of the above
C - Both A and B
Which factors can affect neonatal hematologic values?
a. Gestational age, birth weight, age in hours after delivery
b. Presence of illness, level of support required, site of sampling
c. Technique of sampling, timing of sampling, conditions during labor
d. All of the above
D - All of the above
A subtype of von Willebrand disease describes a qualitative VWF variant that possesses poor
platelet receptor binding despite generating a normal multimeric distribution pattern in
electrophoresis.
a. Subtype 2A von Willebrand disease
b. Subtype 2N von Willebrand disease
c. Subtype 2B von Willebrand disease
d. Subtype 2M von Willebrand disease
D - Subtype 2M von Willebrand disease
All are Acquired Vascular Disorders, except:
a. Purpura Simplex
b. Vitamin C Deficiency
c. Senile Purpura
d. NOTA
A - Purpura Simplex
It is a unique and devastated thrombotic disorder that manifests as large irregular areas of
blue-black cutaneous bleeding, occuring mostly in neonates and children.
a. Atypical Hemolytic Uremic Syndrome
b. Neonatal Immune Thrombocytopenia
c. Purpura Fulminans
d. Hemolysis Disease of the Newborn
C - Purpura Fulminans
It is a serine protease inhibitor (SERPIN) that neutralizes factors IIa, IXa, Xa, and XIIa, all the
coagulation system serine proteases except factor VIIa. Its activity is also enhanced through binding
to exogenous heparan sulfate.
a. Prothrombin
b. Antithrombin
c. Antiphophatidylserine
d. Activated Protein C Resistance
B - Antithrombin
Which of the following antithrombotic drugs does not prevent acute coronary syndrome
recurrence?
a. Tirofiban
b. Clopidogrel
c. Ticagrelor
d. Aspirin
A - Tirofiban
. Daboia russelii viper catalyzes the conversion of fibrinogen to fibrin. While Bothrops atrox viper
triggers coagulation ar the level of factor X.
a. Statement I is true and Statement II is false
b. Statement I is false and Statement II is true
c. Both statements are false
d. Both statements are true
C - Both statements are false
Which of the following is not a type of sample quality flags?
a. Bilirubinemia
b. Abnormal clot formations
c. No-endpoint detected
d. NOTA
D - NOTA
It represents a heterohenous group of clonal bone marrow disorders that may affect multiple cell
lineages, and is the most common hematologic malignant in elderly adults.
a. Myeloproliferative neoplasm
b. Acute Myeloid Leukemia
c. Myelodysplastic syndrome
d. B-lymphoblastic Leukemia
: C - Myelodysplastic Syndrome
It is defined as any single or multiple coagulation factor or platelet deficiency, and is triggered by
the combination of injury-related acute inflammation, hypothermia, acidosis, and hypoperfusion.
a. Hemorrhage
b. Coagulopathy
c. Trauma
d. Thrombocytopenia
B. Coagulopathy
An autosomal dominant bleeding disorder that results from a deficiency of multimerin (a
multimeric protein that is stored complexed with factor V in a-granules).
a. Quebec Platelet Disorder
b. Gray Platelet Disorder
c. Scott Syndrome
d. Thrombocytopenia with absent radii syndrome
A. Quebec Platelet Disorder
The drugs stimulate the formation of an autoantibody that binds to a specific platelet membrane
glycoprotein with no requirement for the presence of free drug.
a. Drug-dependent antibodies
b. Hapten-induced antibodies
c. Drug-induced autoantibodies
d. Immune complex-induced thrombocytopenia
C. Drug-induced antibodies
For low or intermediate pre-test probability scores, the plasma ___________ assay is chosen
over imaging for its robust sensitivity and negative predictive index.
a. D-dimer
b. Homocysteine
c. C-Reactive Protein
d. Lipoprotein (a)
A. D-dimer
. It was first used as an anticoagulant in 1952. It protects against venous thromboembolic disease
(VTE), but it has a narrow therapeutic range, and an overdose causes hemorrhage.
a. Coumadin
b. Aspirin
c. Dabigatran
d. Warfarin
D. Warfarin
All of the following are platelet function test except;
a. Bleeding Time
b. Platelet Aggregometry
c. Lee-White Coagulation Test
d. Heparin-induced Thrombocytopenia Assays
C. Lee-White Coagulation Test
This test system measures the increase in light transmission that occurs in direct proportion to
platelet aggregation induced by various agonists such as collagen, adenosine diphosphate [ADP],
epinephrine.
a. Platelet Function Analyzers
b. Platelet Aggregometers
c. Flow Cytometry
d. Spectrophotometer
B. Platelet Aggregometers
Often occurs with chronic inflammatory disorders such as rheumatoid arthritis, vasculitis, liver
disease, chronic infections, and malignant diseases. A hypoproliferative anemia that is. most common
form of anemia in the hospitalized geriatric population.
a. Iron Deficiency Anemia
b. Unexplained Anemia of Elderly
c. Ineffective Erythropoiesis
d. Anemia of Chronic Inflammation
D. Anemia of Chronic Inflammation
A Nomenclature of the Factor VIII/von Willebrand Factor Complex that employs recombinant
gain-of-function GPIb that binds the VWF A1 domain without the need for ristocetin.
a. VWF:GPIbM
b. VWF:CB
c. VWF:GPIbR
d. VWF:Immunoactivity
A.VWF:GPIbM
A third-generation thienopyridine
derivative with the same mechanism of action as clopidogrel and it is also a prodrug, but its
metabolism to the active form does
not require CYP2C19.
a. Ticagrelor
b. Prasugrel
c. Cangrelor
d. Dipyridamole
B.Prasugrel
Lack of an _________ response may help to differentiate ET from reactive thrombocytosis,
because this response is usually normal in reactive pthrombocytosis but absent in most cases of ET.
a. Platelet aggregation
b. epinephrine
c. microfilaments
d. thromboxane B2
B.epinephrine
It is a Predisposing Congenital Factors and Thrombosis Risk that is associated with arterial
thrombosis and a thrombosis relative risk of 4.3–9.9 in males 3.3–7.2 mmol/L in females, Folate,
vitamin B6, vitamin B12 deficiency, MTHFR C677T and A1298C
a. Homocysteinemia
b. Hyperfibrinogenemia
c. APC resistance
d. PC deficiency
A.Homocysteinemia
It is the inadequate response to aspirin
a.aspirin inadequacy
b. aspirin effectiveness
c. aspirin resistance
d. aspirin
C.aspirin resistance
In thromboplastin time, what participates in the formation of the tissue factor-factor VIIa complex,
the factor VIIIa-factor IXa complex, and the factor Va-factor Xa complex.
a.calcium and chloride
b.tissue factor
c.thromboplastins
d.calcium and phospholipids
: D. calcium and phospholipids
It is a gene that can cause thrombosis, but are also performed to aid in its diagnosis. However,
the American College of Medical Genetics and Genomics (ACMG) has recommended it should not be
routinely performed for the workup of patients with thrombophilia.
a.factor IX gene
b.FV Leiden
c.MTHFR
d.prothrombin G20210A
c. MTHFR
The use of __________ for treatment of VTE during pregnancy is avoided because of the risk of
maternal and fetal hemorrhage and fetal embryopathy early in the pregnancy
a.aspirin
b.warferin
c.protein C
d.coumadin
d.coumadin
It causes moderate to severe anatomic hemorrhage that may be treated with plasma or
non-activated PCC to produce therapeutic levels of 10 units/dL to 40 units/dL.
a. Factor VII deficiency
b. Factor X deficiency
c. Factor V deficiency
d. Factor XIII deficiency
B. Factor X deficiency
It is an autosomal dominant, thrombophilic disorder that is associated with venous and arterial
thromboembolic events. The disorder is characterized by hyperaggregable platelets in response to
ADP, epinephrine, or both.
a. Stormorken Syndrome
b. Scott Syndrome
c. Kasabach Merritt Syndrome
d. Sticky platelet syndrome
D. Sticky platelet syndrome
It is associated with thrombocytopenia and other abnormalities, including bony abnormalities,
abnormalities of visceral organs, and pancytopenia.
a. TAR syndrome
b. X-linked thrombocytopenia
c. Congenital amegakaryocytic thrombocytopenia
d. Fanconi anemia
D. Fanconi Anemia
It is a calcium-dependent pentameric ligand-binding member of the pentraxin family. It is
produced in the liver and circulates in plasma at a concentration less than 0.55 mg/L.
a. C-Reactive Protein
b. Lipoprotein (a)
c. Homocysteine
d. Factor VIII
A. C-Reactive Protein
A prodrug whose main active metabolite is formed via the CYP3A4 liver enzyme.
a. Prasugrel
b. Aspirin
c. Coumadin
d. Ticagrelor
D. Ticagrelor
Under bleeding time test, the phlebotomist used a lancet to make a small, controlled puncture
wound and recorded the duration of bleeding, comparing the results with the reference interval
of_____
a. 3 to 10 minutes
b. 2 to 8 minutes
c. 2 to 9 minutes
d. 3 to 7 minutes
C. 2 to 9 minutes
The BBL Fibrometer was the first semiautomated instrument to be used routinely in the
coagulation laboratory.
a. BBL Fibrometer
b. KC1 and KC4
c. STart 4
d. BFT-II
A. BBL Fibrometer
It is a systemic disorder of microvascular thrombosis associated with a severe deficiency of
ADAMTS13 and is most often an acquired autoimmune disorder.
a. Antiphospholipid syndrome
b. Thrombotic thrombocytopenia
c. Immune thrombocytopenia
d. Preeclampsia and HELLP syndrome
B. Thrombotic thrombocytopenia
Hemophilia C, also known as ___________, is an autosomal dominant hemophilia with mild to
moderate bleeding symptoms caused by a deficiency in ___________.
A. Christmas Disease, Factor XI
B. Disseminated Intravascular Coagulation, Factor IX
C. Rosenthal Syndrome, Factor XI
D. Hypofibrinogenemia, Factor IX
C. Rosenthal Syndrome, Factor XI