which of the following is NOT a cause for indefinite deferral of a donor?

accidental needle stick 1 year ago, neg for infectious disease.

How often can cold auto antibody interference with ABO grouping be avoided?

Washing cells with normal saline warmed to 37 deg C

Should an A-neg woman who has just had a miscarriage receive RhIG?

Yes, but only if she does not already have an anti-D from a previous preg

Which of the following describes the drug adsorption mechanism?

Drugs bind firmly to proteins of the RBC membrane

Which statement below reflects a correct interpretation of these results?

The patient's cells are coated with IgG

Causative antibodies in "cold" antibody autoimmune hemolytic anemia?

Usually reacts stronger at 20 deg C than at 37 deg C

Which of the following is the most common cause of bacterial contamination of platelet production?

Entry of skin plugs into the collection bag

trauma patient had severe hemolytic reaction just minutes after receiving blood. What is most likely cause?

Immediate, Immunologic ; Probably due to clerical error, ABO in compatibili

which one of the following histories reprresents an acceptable donor?

HCT 41, BP 90/50, Temp, 99.4 deg F, Pulse 65, Age 59

A delayed hemolytic transfusion reaction is most often the result of?

anamnestic response in patient who had previously sensitized trans or pregn

most common preventable error occurring among the nursing and medical staff that results in transfusion related death?

Improper patient identification

Which of the following constitutes rejection status of a donor?

Confirmed positive test for HBsAg ten years previously

Pain at the infusion site and hypotension are observed in what type of reaction?

Acute hemolytic transfusion reaction

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MLT 205 Exam 3

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Questions 77

Answers

1
Selected cells can be used as part of the antibody ID to confirm or eliminate a suspected antibody?
False
True
2
which of the following is NOT a cause for indefinite deferral of a donor?
Positive test results for Changa's disease
Donation of a unit of blood that transmitted Hep B Virus to a recipient
Recipient of human growth hormone
accidental needle stick 1 year ago, neg for infectious disease.
3
Which of the following is characterized of iron overload?
All of the above
Delayed, Nonimmunoligic complication
Chelating agents may be used as a form of treatment
Multi organ damge may occur
4
How often can cold auto antibody interference with ABO grouping be avoided?
Treating RBC with ficin prior to testing
Washing cells with normal saline warmed to 37 deg C
Wasing cells with normal saline cooled to 4 deg C
Washing cells with normal saline
5
Cold agglutinin syndrome is best associated with which blood group?
P
Duffy
Rh
I/i
6
Patient experience two febrile nonhemolytic reactions after RBC transfusion. What is preferred blood comp for next trans
CMV- neg RBC's
Group O, D-neg RBC's
Irradiated RBC's
Leukoreduced RBC's
7
Should an A-neg woman who has just had a miscarriage receive RhIG?
Yes, but only if she does not already have an anti-D from a previous preg
No, RhIG id given for term pregnancies only
Yes, but only a mini dose regardless of the trimester
No, the type of the baby is unknown
8
Segments from the donor unit and patient serum should be kept for 7 days following a transfusion?
False
True
9
Nursing responsibilities related to transfusion include which of the following?
All of the above
Careful monitoring of patient vital signs
Staying near the patient for the first fifteen minutes of the transfusion
Double check the patient bracelet numbers and identify on the paperwork
10
Which of the following describes the drug adsorption mechanism?
The drug induces production of an autoantibody that recognizes the RBC
Drugs alter the blkood cell membrane so that plasma proteins could bind.
Drugs bind firmly to proteins of the RBC membrane
A solubel antidrug complex absorbs nonspecifically.
11
Routine serolgical investigation of a transfusion reaction requires all of the following EXCEPT?
A post transfusion specimen
A segemtn from the unit that was administered to the patient
A pretransfusion specimen
A sputum specimen
12
the oral temperature of a blood donor should not exceed?
98.5 deg F
97.5 deg F
100.5 deg F
99.5 deg F
13
A positive autocontrol in antibody detection procedures is usually indicative of?
None of the above
inadequate washing
Positive IAT
Positive DAT
14
What types of antibodies would you suspect if the patient's antibody screening cells were all pos and the auto con = pos
Autoantibody
none of the above
anti-e
Alloantibody
15
A donor may donate a unit of blood every?
12 weeks
4 weeks
8 weeks
5 weeks
16
A recommended treatment for individuals with cold hemagglutinin disease is to?
Move to a warm climate
Start steroid therapy
none of the above
Have a splenectomy
17
The onset of a warm autoimmune hemolytic anemia may be initiated
Bacterial Infection
All of the above
Trauma
Preganacy
18
The results of a Klein-Betke stain indicatd a fetomaternal bleed of 40ml of whole blood. How many vials of Rhogam needed
4
1
3
2
19
Additive solution are approved for storage of the red blood cells for how many days?
7
21
35
42
20
Most facilities set a time limit of 30 minutes for accepting unit of RBC's in the BB?
False
True
21
A positive autocontrol in antibody detection procedures is usually indicative of the presence of an alloantibody
True
False
22
Which statement below reflects a correct interpretation of these results?
The patient's cells arre coated with compliment
Test cannot be interpreted because the check cells didnt react as Ecpected?
The patient's cells are coated with IgG
The patient's cells are coated with IgG and compliment
23
Causative antibodies in "cold" antibody autoimmune hemolytic anemia?
Usually reacts stronger at 20 deg C than at 37 deg C
usually reacts well at 37 deg C
Are usually IgG
React as well, or better at 37 deg C than at lower temps
24
The rosette test is?
Performed on cord blood sample
Used to screen for FMH
A quantitative test used to calculate the volume of FMH
An acid elution used to estimate the volume of FMH
25
AB-pos individual, what test must be performed to ensure that a warm reaction autoantibody is not cause false positive?
IAT
Rh control
DAT
Rosette
26
What component is most frequently associated with transfusion- associated sepsis?
Packed RBC's
Platelets
Plasma
Whole blood
27
If a donor has had blood transfusion he must be?
Accepted
Deferred for 24 months
Deferred for 12 months
Deferred for 6 months
28
When transporting platelets, platelets should be packed on dry ice?
True
False
29
Which of the following is the most common cause of bacterial contamination of platelet production?
incorrect storage temp of 1-6 deg C
Entry of skin plugs into the collection bag
Environmental contamination during processing
Bacteremia in the donor
30
RBC's sensiized in which drug-induced hemolytic anemia mechanism act as "innocent bystanders"?
Immune complex
Drug adsorption
Auto antibody formation
Membrane modification
31
A 300 ug dose of Rh-immune globulin contains sufficient anti-D to protect against how much whole blood?
100 ml
15 ml
30 ml
50 ml
32
Which of the following is NOT considered an immune mediated reaction
TRALI
TACO
Hemolytic
anaphylactic
33
What is the storage temp for a unit of plateletpheresis?
none of the above
1-6 deg C
Less than 18 deg C
20-24 deg C
34
Individuals of which of the following type normally do NOT have naturally occurring antibodies in their serum?
B
A
O
AB
35
When is the antenatal dose of Rhogam given?
13 weeks
20 weeks
28 weeks
36 weeks
36
The Xg system is the only sex linked antigen?
True
False
37
A cold antibody titer greater than (BLANK) at 4 deg C is characterized by pathological cold hemaglutinin disease?
1000
256
64
128
38
trauma patient had severe hemolytic reaction just minutes after receiving blood. What is most likely cause?
Immediate, Immunologic ; Probably due to clerical error, ABO in compatibili
Delay, Immunologic; Probably due to an iron overload
Immediate, nonimmunologic; probably due to volume overload
Delayed immunologic; Probably due to an ntibody such as Jk^a
39
Donors for double-unit RBC's can donate every ten weeks?
False
True
40
In the event of a transfusion reaction, The BB tech should?
All of the above
Perform a clerical check on patent sample, labels, paperwork, + donor blood
Examine the returned blood bag for bacterial contamination
Perform all testing as STAT
41
which one of the following histories reprresents an acceptable donor?
HCT 39, BP 110/70, Temp, 99.8 deg F, Pulse 75, Age 40
HCT 41, BP 90/50, Temp, 99.4 deg F, Pulse 65, Age 59
HCT 37, BP 136/86, Temp, 98.6 deg F, Pulse 80, Age 18
HCT 45, BP 188/90, Temp, 98.6 deg F, Pulse 78, Age 50
42
Complication of massive transfusion include all of the following except?
Hypokalemia
Hypothermia
Hypocalcemia
Hyperkalemia
43
A delayed hemolytic transfusion reaction is most often the result of?
A unit of pack cells infected with HBV
Bacterial contaminated RBC's
anamnestic response in patient who had previously sensitized trans or pregn
Hemosiderosis in a massively transfused patient
44
All of the following tests are routinely performed on a cord blood sample EXCEPT?
Rh typing
Forward typing ABO
DAT
Antibody Screen
45
most common preventable error occurring among the nursing and medical staff that results in transfusion related death?
Alloantibody misidentifed
Incorrect cross match procedure
Improper patient identification
Improper specimen handling
46
Which of the following constitutes rejection status of a donor?
Confirmed positive test for HBsAg ten years previously
A tattoo five months previous
Close contact with a patient with hepatitis
two units of transfused blood four months previous
47
Blood collection bags must be able to?
All of the above
Allow for adequate gas exchange
Prevent evaporation of the water from blood components
Withstand irradiation
48
In the Kleinhauer-Betke the maternal cells?
Stain yellow
Appear as "ghosts'
Stain pink
Lyse and are not visible
49
Autologus units may be used as part of antibody ID to confirm or eliminate a suspected antibody?
False
True
50
Rhogam should be administered to eligible mothers no later than?
5 days after delivery
48 hours after delivery
72 hours after delivery
24 hours after delivery
51
Pain at the infusion site and hypotension are observed in what type of reaction?
Acute hemolytic transfusion reaction
Allergic
Delayed heolytic transfusion reaction
Febrile nonhemolytic
52
Which of the following is the cause for a temporary deferral of a potential donor?
Taking Birth Control
Getting multiple tattoos
Dyeing hair
Taking a multi vitamin
53
Transfusion related anaphylaxis has been associated with?
Circulating blood group antibodies?
circulatory overload
Decreased haptoglobin concentration
IgA deficiency
54
Hemolytic disease of the newborn is characterized by?
Different RBC antigens between mother and daughter
Nearly always anti-D
antibody titer less than 32
IgM antibody
55
What is the most common drug associated with the drug-adsorption mechanism?
Insulin
Methyldopa
Penicillin
Erythromycin
56
What is the minimum age for blood donation?
17 years
25 years
23 years
21 years
57
A patient that is type O can safely receive any type of plasma?
True
False
58
FFP should be thawed in a separate bag to prevent contamination?
False
True
59
What drug is associated with the production of an autoantibody?
Ibuprofen
Tetracycline
Methyldopa
Isoniazid
60
TRALI presents with the following symptoms?
Fever
All of the above
Respiratory distress
Severe Hypoxemia and hypotension
61
Kernicteris is caused by the effects of?
Unconjugated Bilirubin
Antibody titer
Antibody Specificity
Anemia
62
How is the clasical pathway of the complement activated?
By binding antigen with antibody
By the polysaccharides on the surface of bacteria
By enzyme catalysis
Lipopolysaccharides on the Surface of the RBC
63
Dyspnea, severe headache, and peripheral edema occuring after transusion. What transfusion reaction is occurring?
TACO
Hemolytic
TRALI
Anaphylactic
64
The H antigen is found in the highest concentration on type B cells?
False
True
65
Reagents screening cells may not detect antibodies directed against low-incidence antigens?
False
True
66
The Kleinhauer-Betke test?
Is used primarily to detect maternal RBC in the fetal circulation
Is used primarily to detect fetal RBC in the maternal circulation
Is an acid elution test
used primarily to detect fetus RBC in Matern circ/ Is an acid elution test
67
Blood type would be used to perform an exchange transfusion if the mother is type O and the baby is type B?
O
A
B
AB
68
continuing a transfusion after treatment with medication is allowed when which type of reaction has occured?
TACO
TRALI
Allergic
Febrile
69
Warm autoimmune hemolytic anemia is best associated with which blood group?
P
Rh
I/i
Duffy
70
Which of the following best describes a transfusion reaction?
A physiological response to Blood transfused 5 to 10 days before host sympt
unfavorable transfusion event occuring in a patient pre or post transfusion
An urticarial response to blood products occuring 1 to 2 hours post infusio
None of the above
71
Upon investigation of a delayed hemolytic transfusion reaction, what should be included in med history?
Transfusion reactions
Preganancies
Previous tranfusion
All of the above
72
What life threatening disorder characterized by severe anemia, effusions, ascites from hepatomegaly and splenomegaly?
Thalassemia
Sickle Cell Anemia
Hereditary persistence of fetal hemoglobin
Hydrops fetalis
73
How might a technologist detect a patient with drug induced hemolytic anemia?
Positive rosette test
ABO discrepancy
positive DAT
Positive antibody screen
74
A patient has a hemolyti reaction to blood transfused 8 days ago. What is the most likely cause?
Immediate, Immunologic; prob due to clerical error, ABO incompatibility
Delay; non immunologic; prob due to antibody such as Jk^a
Immediate, nonimmunologic probaly due to volume overload
Delayed immunologic ; prob due to an iron overload
75
Which of the following treatments uses ultraviolet light to treat hyperbilirubinemia after the infant is delivered?
Plasma exchange
Aminocentesis
Electrophoresis
Phototherapy
76
Hives and itching are symptoms of which of the following transfusion reaction?
Hemolytic
Bacteriogenic
Allergic
Anaphylactic
77
Routine laboratory tests performed on a mother's first prenatal specimen should include?
DAT
ABO/Rh typing
Antibody Screening
ABO/Rh typing/ antibody screening

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