pp Flashcards
(115 cards)
The source of antibody heterogeneity is:
a. gene rearrangement in the peripheral immune organs
b. gene rearrangement in the central immune organs
c. gene insertion in the fetus
d. hereditary mutation
a. gene rearrangement in the peripheral immune organs
b. gene rearrangement in the central immune organs
c. gene insertion in the fetus
d. hereditary mutation
What is the most common cause of acute haemolytictransfusion reaction?
a. bacterial contamination
b. ABO errors
c. Antibodies to the antigens of the Kell system
d. RhD negative patient transfused with RhD positivered blood cells
a. bacterial contamination
b. ABO errors
c. Antibodies to the antigens of the Kell system
d. RhD negative patient transfused with RhD positivered blood cells
. Regarding platelet transfusion, anti-HLA antibodiesplay a key role in the development of
a. posttransfusion infection
b. refractoriness to platelet transfusions
c. posttransfusion purpura
d. neonatal alloimmune thrombocytopenia (NAIT)
a. posttransfusion infection
b. refractoriness to platelet transfusions
c. posttransfusion purpura
d. neonatal alloimmune thrombocytopenia (NAIT)
Which is the most common type of genetic variantsamong blood group antigens?
a. frameshift
b. splice site
c. large deletion
d. single nucleotide polymorpisns (SNP)
a. frameshift
b. splice site
c. large deletion
** d. single nucleotide polymorpisns (SNP)**
Who should be deferred from blood donation?
a. Actually febrile donors
b. Persons just returning from the Zika-endemic areas
c. All of the above
d. Persons who disclose iv. Drug use
a. Actually febrile donors
b. Persons just returning from the Zika-endemic areas
c. All of the above
d. Persons who disclose iv. Drug use
Obligatory donor screening test in all developedcountries EXCEPT:
a. Lues ( syphilis)
b. Hepatitis B (Ag, Ab or both)
c. HIV
d. Hepatic enzyme levels (ALAT, ASAT) or serum bilirubin
a. Lues ( syphilis)
b. Hepatitis B (Ag, Ab or both)
c. HIV
d. Hepatic enzyme levels (ALAT, ASAT) or serum bilirubin
Which of the following are accepted definitionsof “massive blood loss”?
a. Blood loss of 150ml/min
b. Replacement of 50% of TBV within 3 hours
c. Transfusion rate units within a 24h period d. Replacement of 100% of total blood volume (TBV)within 24h
a. Blood loss of 150ml/min
b. Replacement of 50% of TBV within 3 hours
c. Transfusion rate units within a 24h period d. Replacement of 100% of total blood volume (TBV)within 24h
Platelets can be transfused regardless of donorRhD
a. a pregnant women with eclampsia
b. a young man aged 22
c. a woman of childbearing age
d. a twelve-year old girl
a. a pregnant women with eclampsia
b. a young man aged 22
c. a woman of childbearing age
d. a twelve-year old girl
The transfusion related immunomodulation (TRIM)..
a. is always harmful for the patient, because it isrelated to higher incidence of tumor recurrence
b. has no clinical significance since the universalleukoreduction has been implemented all over
c. Is always beneficial for the patient, because itis related to better graft survival
d. Can be either beneficial or harmful, dependingon the clinical situation
a. is always harmful for the patient, because it isrelated to higher incidence of tumor recurrence
b. has no clinical significance since the universalleukoreduction has been implemented all over
c. Is always beneficial for the patient, because itis related to better graft survival
d. Can be either beneficial or harmful, dependingon the clinical situation
The most common inherited bleeding disorder
a. factor XI deficiency
b. Haemophilia A
c. Von Willebrand’s disease
d. Factor VII deficiency
a. factor XI deficiency
b. Haemophilia A
c. Von Willebrand’s disease
d. Factor VII deficiency
The most likely source of Yersinia contamination of a red blood cell unit is
a. The skin flora of the donor
b. Transient asymptomatic donor bacteremia
c. Contamiation of the plastic bag
d. The skin flora of the laboratory staff
a. The skin flora of the donor
b. Transient asymptomatic donor bacteremia
c. Contamiation of the plastic bag
d. The skin flora of the laboratory staff
Advantages of the subcutaneous immunoglobulinsubstitution, EXCEPT:
a. Can be used in patients without available veins
b. Lack of local side effects
c. Results in higher IgG trough levels
d. Can be advantageous in IgA deficiency
a. Can be used in patients without available veins
b. Lack of local side effects
c. Results in higher IgG trough levels
d. Can be advantageous in IgA deficiency
MHC (HLA) class I complex
a. Is expressed on lymphocytes, dendritic cells andred blood cells
b. Is expressed on macrophages, dendritic cells andred blood cells
c. Is expressed in all nucleated cells
d. Is expressed on macrophages, dendritic cells andlymphocytes
a. Is expressed on lymphocytes, dendritic cells andred blood cells
b. Is expressed on macrophages, dendritic cells andred blood cells
c. Is expressed in all nucleated cells
d. Is expressed on macrophages, dendritic cells andlymphocytes
The transfusion related immunomodulation (TRIM)is associated with
a. The living leukocytes transfused by the blood product
b. Soluble factors released during storage
c. Soluble HLA molecules
d. All the above
a. The living leukocytes transfused by the blood product
b. Soluble factors released during storage
c. Soluble HLA molecules
d. All the above
.Possible way to collect more plasma for fractionationthan whole blood donation
a. To collect more than 450ml whole blood from donors
b. Plasmapheresis
c. To increase the centrifugal force “g” for the betterseparation in the blood bag
d. Red cell apheresis
a. To collect more than 450ml whole blood from donors
b. Plasmapheresis
c. To increase the centrifugal force “g” for the betterseparation in the blood bag
d. Red cell apheresis
A person of unknown ABO/RhD type should be transfusedwith
a. RhD negative red blood cells and ABO fresh frozenplasma
b. RhD positive red blood cells and ABO fresh frozenplasma
c. RhD negative red blood cells and O fresh frozenplasma
d. RhD positive red blood cells and O fresh frozenplasma
a. RhD negative red blood cells and ABO fresh frozenplasma
b. RhD positive red blood cells and ABO fresh frozenplasma
c. RhD negative red blood cells and O fresh frozenplasma
d. RhD positive red blood cells and O fresh frozenplasma
Characteristic for intravenous immunoglobulinproducts; except
a. Contains stabilizer
b. 5 or 10% IgG concentration
c. Produced from pooled plasma of a few thousand blooddonors
d. High IgG aggregate content
a. **Contains stabilizer **
b. 5 or 10% IgG concentration
c. Produced from pooled plasma of a few thousand blooddonors
d. High IgG aggregate content
or C
Common donor eligibility criteria; except
a. Level of education (secondary school or higher)
b. Weight (eg. More than 50kg)
c. Defined hemoglobin level
d. Age (eg. 18-66 years)
a. Level of education (secondary school or higher)
b. Weight (eg. More than 50kg)
c. Defined hemoglobin level
d. Age (eg. 18-66 years)
The immunogenicity of a red cell antigen indicates
a. Its potency to give marked in vitro reactions
b. Its vulnerability to proteolytic enzymes
c. Its frequency in the population
d. Its potency to induce the production of an alloantibodyin an individual for the giv.
a. Its potency to give marked in vitro reactions
b. Its vulnerability to proteolytic enzymes
c. Its frequency in the population
d. Its potency to induce the production of an alloantibodyin an individual for the giv..
The window period of an infection is a time period
a. When there is a 100% safety that the person cannottransmit infections
b. When both antigens and antibodies reach their peaklevels
c. When antigens are already cleared but antibodiesare not produced yet
d. When the viral nucleic acids are absent
a. When there is a 100% safety that the person cannottransmit infections
b. When both antigens and antibodies reach their peaklevels
c. When antigens are already cleared but antibodiesare not produced yet
d. When the viral nucleic acids are absent
Which is the maximum benefit that can be expectedfrom a directed blood donation?
a. A family member with hepatitis can be identified
b. Higher safety compared to the general donor pool
c. The donating family member may become a regulardonor
d. Family members can learn more about their risksfor HIV infection
a. A family member with hepatitis can be identified
b. Higher safety compared to the general donor pool
c. The donating family member may become a regulardonor
d. Family members can learn more about their risksfor HIV infection
Commonly applied treatments in excessive menstrual bleeding caused by von Willebrand disease except
a. oral tranexamic acid
b. recombinant VIII factor products
c. haemate p factor replacement therapy
d. 3. Generation oral contraceptives
a. oral tranexamic acid
b. recombinant VIII factor products
c. haemate p factor replacement therapy
d. 3. Generation oral contraceptives
Passenger leukocytes are responsible for all ofthe following adverse events except
a. hemolysis
b. non-hemolytic febrile reaction
c. anaphylaxia
d. human leukocyte antigens (HLA) immunization
a. hemolysis
b. non-hemolytic febrile reaction
canaphylaxia
d. human leukocyte antigens (HLA) immunization
Benefits of autologous blood transfusion except
a. purity, no risk of transmitted disease
b. urgency, available also in urgent situations
c. safety, no risk of transfusion reactions due toincompatibility
d. availability in contrast with donor blood, autologousblood is instantly available and requires.
a. purity, no risk of transmitted disease
b. urgency, available also in urgent situations
c. safety, no risk of transfusion reactions due toincompatibility
d. availability in contrast with donor blood, autologousblood is instantly available and requires.