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MT Blood Bank

Study Questions for MT Blood Bank

QuestionAnswer
The interval between blood donations 8 weeks
The oral temperature of a donor must not exceed 37.5
Minimum acceptable Hgb of fingerstick for male donor 12.5
Lowest acceptable Hct by earlobe puncture fro female blood donor 38%
Prospective donors who have had malaria should be: deferred for 3 years after cessation of treatment
Donors who have been immunized with oral polio, measles or mumps vaccine and are symptom free are acceptable to donate after a period of 2 weeks
Which biochemical change does not occur in stored blood pasma K decreases
What is the acceptable temp range for a blood bank refrigerator 1-6C
If blood is to be transported, the blood temp must be kept between 1-10C
Which blood group system was discovered first ABO
What is an amorph a gene with no observable effect
Plasma form donors of what blood group can be transfused to an recipient AB
Which antibody is associated with Delayed Transfusion Reaction Anti-JKa
Naturally occurring antibodies are found regularly in which blood group system ABO
Characteristics of naturally occuring antibodies React best in saline react best at room temp or 4C do not usually cross the placenta
Immune antibodies may be produced by intermuscular injection of blood pregnancy repeated blood tranfusions
What is the dosage effect Stronger reactions with homozygous cells than with heterozygous cells
Anti-A1 is a seed extract from Dolichos biflorus
The frequency of Group A individuals in the US is 41%
Group B individuals have anti-A in their sera
Which blood group will not be agglutinated by Anti-A,B typing serum 0
Which blood group reacts most strongly with anti_H 0
What reagent is made from the seeds of the Dolichos Biflorus anti-A1
Who proposed a numerical Rh Nomenclautre Rosenfield
What is a true characteristic of of Du Du is a weak variant of the Rh0(D)antigen
A Du of the gene interaction variety would have what genotype DuCe/dCe
What cells will Anti-C not react with rr cells
Anti E will react with R2R2 Cells
The f antigen refers to ce
The symbol for the Bombay blood group Oh
What antibodies will be detected in the sera of a Bombay Genotype A,B,H
Which system is composed of antigens found primarily in saliva and plasma Lewis
In the Duffy blood group which genes ar codominate Fya and Fyb
An acquired antibody anti-Jka
The antigen I is absent on all cord cells
Washed red cells tested with anti d and Rh control with a pos anti D and pos Rh control is most likely caused by cells coated with immunoglobulin (pos DAT)
What percentage of the population has the anti-Lea antibody 1%
What percentage of US caucasian population lacks the Kell antigen 90%
Anti-K does NOT react best in saline at room temperature
Anti K is also known as anti-cellano
what is the frequency of Fy(a-b-) in blacks 68%
What is the frequency of Fy (a-b-) in caucasians very rare
There is an association between the Fy(a-b-) phenotype and resistance to malaria
What percentage of males are Xga positive 64%
What percentage of females are Xga Negaive 12%
What color code is used for donor blood labels, Group A yellow
What is the standard acceptable color for anti A grouping serum blue
what is the color of dye added to commercially prepared antiB blood grouping serum yellow
Anti A1B serum confirms Group O individuals
What are suitable medium for suspension of red cells for BB saline, serum, albumin
What is NOT suitable medium for suspension of red cells for BB distilled water
What enzymes are used in BB procedures ficin,bromelin,papain
What enzyme is NOT used in BB procedures amylase
Enzymes prevent detection of antibodies in the? Duffy System
Elution? The technique used to remove antibody bound to sensitized red cells
The Donath-Landsteiner Test is associated with PCH (parosysmal cold hemoglobinuria)
A cold autoagglutinin will usually have specificity for the I antigen
PCH if often associated with antibodies of which system P
Forward grouping is using known serum antibodies to detect unknown antigens
Reverse grouping difficulties may be encountered in what instances newborns, geriatric and chemotherapy patients
Someone forward groups as an AB but reverse groups as B probably is a group A2B with anti A1
The most dangerous antibodies in the blood bank are those that react at 37C
The best screening test for the detection of a large fetomaternal hemorrhage is Erythrocye rosetting test
The DAT using polyspecific combs sera is not of value in differentiation of cell surface coating (complement or IgG)
a Poly specific anti-human serum contains at lest antibodies to IgG and C3d
The DAT is most useful for? HDN
In a DAT you are testing patient cells
IDAT tests are used for? detection of circulating antibody in patients serum
when using chemically modified Anti-D, the recommended control is? ABO grouping
A false neg Antiglobulin test can be caused by? inadequate washing
What is the most common reason for mixed field agglutination transfused cells mingling with patient cells
the minor crossmatch detects donor serum that react with recipient cells
Which antibody is considered clinically significant Anti-Kidd
Which antibodies are usually considered clinically insignificant anti-lea,anti-M,anti-P1
Which antibody is inactivated or destroyed by enzyme treatment anti-Fya
if a recipient is incompatible with only one donor, one should suspect a recipient antibody to a low incidence antigen
which antibody is present in 1:8 XM anti-kell
If a group O is xm for a group b recepient the minor xm will be incompatible
platelet concentrates are often used to treat patients with thrombocytopenia
cryoprecipitated AHF is not used to treat Hemophilia B
Deglycerolyzed frozen rbc must be transfused within how many hrs 24
recurrent nonhemolytic febrile transfusion reactions are usually caused by anti-HLA antibodies, platelet antibodies, white cell antibodies
HDN can occur when the lacks an antigen the infant possesses
what antibody is most likely to be involved in HDN anti-c
when sever HDN is due to an unidentified antibody the mothers rbc's may be used for transfusion
which blood group has not been reported to cause HDN P
In case of HDN when the mother is O and the baby is A1, red cells for an exchange should be of what type 0
in cases of ABO HDN the mother is usually what type 0
what percentage of donor blood test would be compatible of an anti-e transfusion 2%
what percentage of donor blood is compatible with a patient who has anti-jka 25%
to find two units of compatible blood for a patient who has anti-jka how many units will have to be crossmatched 10
A 56C water bath is commonly used for preparing eluates, inactivating sera
testing media for antigen/antibody reactions include isotonic saline, LISS, albumin, enzymes
Anti A1 agglutination is found occasionally in A2 pts and group b and o pts
weak agglutination with anti A sera is to be expected with which blood groups A2 and A2B
weak agglutination with anti-A sera can be expected with A2 and A2B groups
Anti-A1B is obtained from is obtained from group o individuals and also confirms group o individuals
Rh antibodies react more strongly at 37C than at 4C are acquired from transfusion or pregnancy can cross the placenta
Which antibodies are naturally occuring anti P1, anti Lea, anti-S
in a very acute phase of hepatitis, what would indicate an onset of a viremic state positive HBSAg
what is the expiration date of RBC preserved with citrate-phosphate-destrose adenine(cpda-1) 35 days
LISS causes decrease in electropositive catiosn surrounding RBC usually consists of phospate saline and glycine enhance the rate and sensitivity of antigen antibody reactions
Created by: wmart08
 

 



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