What are the three General indications of transfusion?
Increase oxygen carrying capacity
Increase blood volume
Maintain hemastasis
O2 content is determined by ____ concentrations.
HgB
Transfusions are contraindicated for what four patients.
stable clinical conditions
minor symptoms
normal blood test (HgB, HCT)
disease states (heart, coag abnormalities)
What are the four indications for transfusion of whole blood?
acute massive blood loss (>30%)
restore intravascular volume
prevent hypovolemic shock
increase hgb concentration
What volume of blood loss is indicated for whole blood transfusion?
>30%
These patients should not receive whole blood due to adverse response to plasma by developing pulmonary edema and heart failure due to volume overload.
severe chronic anemia
pulmonary edema and heart failure due to whole blood transfusion is more likely in patients with ______ and ________ failure.
heart
kidney
what are the three indications for packed dred blood cell transfusion.
increase O2 carrying capacity in anemic patients
chronic anemia
symptomatic anemia (Hct <21%)
A unit of PRBC increases HgB by ___ g/dL and HcT by ___.
1
3%
true or false
a unit of PRBC and a unit of whole blood will increase HgB and HCT equally.
true
PRBC's are specifically indicated for what three compromised patients du to possible volume overload?
elderly
infant/children
cardiac patients
what are the five contraindications of PRBCs?
volume expansion
in place of B12/Fe/folate
to enhance wound healing
to improve general well being
low operative blood loss
what are the three indications for washed PRBCs.
removal of excess plasma proteins
prevents alloimmunization
severly immunocompromised recipients
what are the three indications for platelets?
control bleeding (bleeding time)
prevent bleeding (platelet count)
deficiency in number or function
what quantity of platelets is indicative of transfusion? preoperative?
<10,000 to 20,000 /ul
<50,000 /ul, preoperative
what are the four contraindications of platelets?
ITP
DIC
prophylactically with massive transfusion
prophylactic upon following cardiopulmonary bypass
what are the two indications of fresh frozen plasma?
treat coagulation factor deficiency
when specific coagulation factor concentrates are not available
Fresh Frozen Plasma id contraindicated for volume expansion due to what disease risk?
hepatitis risk
Fresh Frozen Plasma is contraindicated as a nutritional supplement for what factors?
Vitamin K dependent factors
Factor II, VII, IX, X
Fresh Frozen Plasma is Contraindicated prophylactically in what two conditions?
massive blood transfusion
following cardiopulmonary bypass
Fresh Frozen Plasma is contraindicated in a Pt/Ptt less than ____ times normal.
1.5
This is a high molecular weight plasma protein concentrate that precipitate in cold.
Cryopercipitate AHF
Cryoprecipitate contains at least _____ mg fibrinogen and ____ units of AHF suspended in ___ mL of plasma.
150
80
15
what are the five concentrated factors in cryoprecipitate?
Factor VIII
Factor XIII
Fibrinogen
Von Willebrands Factor
Factor IX
This disease caues prolonged bleeding time, prolonged PTT, and abnormal platelet plug formation.
Von Willebrand Syndrome
Von Willebrand Syndrome is caused by a partial deficiency of what factor?
VIII
what blood product is indicated for Vonwillebrand syndrome?
Cryoprecipitate
what are three Fibrinogens abnormalities that indicate use of cryoprecipitate?
congenital deficiency
acquired through DIC
severe liver disease
This factor deficiency is indicative of cryoprecipitate as replacement therapy for hemophila A
Factor VIII deficiency
This is an opsonic glycoprotein that helps clear blood borne particulate such as bacteria and protein aggregates?
fibronectin
This this cryoprecipitate product is used as treatment for sepsis, burns and trauma.
Fibronectin
this cryoprecipitate product can be administrated topically?
finrin glue (Fibrin sealant)
Fibrin glue is made from ___________ cryoprecipitate.
autologous
Cryoprecipitate is indicated for this factor deficiency as therapy for hemophilia B and christmas disease.
Factor IX deficiency
this blood product is used to correct large scale loss of colloids, such as hypovolemic shock, burn patients, and retroperitoneal surgery.
Albumin/Plasma protein fraction
this blood product is contraindicated to correct hypoalbuminemia due to nutritional deficiency.
albumin/plasma protein fraction
this is a non-human blood product derivative so it has no viral disease transmission risk.
albumin/plasma protein fraction
what are the the two leukocyte reduced products?
RBCs
PLTs
what are the three preparation methods for Leukocyte Reduced Products?
washing
filtration
centrifugation
What are the two indications for Leukocyte reduced products?
prevention of HLA sensitization (Plt refractoriness)
prevention of febrile ransfusion reaction
this is an alternative to pooled random platelets?
apheresis platelets (SDP)
1 RP contains _________ platelets
1 SDP contains __________ platelets
1 SDP = ____ RP
5.5x10103.0x10116 RP
What are three advantages to Apheresis platelets?
limits exposure to foreign antigens and transfusion transmitted disease
avoid platelet refractoriness
can provide HLA matched
Irradiated RBCs/Platelets are used to prevent what disease?
Graft Versus Host Disease
This is a disorder in which the grafted tissues or donor cells attack the hosted tissue.
Graft versus host disease
this disease may occur on immunocompromised patients who received an HLA-matched lymphocyte.
graft versus host disease
This prevents lymph replication in graft versus host disease.
gamma irradiation
what are the five indications of Irradiated RBCs/Platelets?
blood relative donor
intrauterine transfusions
severely immunosuppressed
hodgkin's disease
bone marrow transplantation
These patients require a conservative approach due to serological difficulties and expected short red cell survival. patients must be phenotyped prior to transfusion.
Transfusion in autoimmune hemolytic anemia
this is when transfusion exceeds patient's blood volume withna a 24 hr period or about 10 units of blood in an adult.
massive transfusion
abbreviated crossmatch in massive transfusion is performed only in what phase?
IS
changing these depends on gender and age of patients?
ABO or Rh types
This may be seen in massive transfusion patients due to active metabolism uptake of potassium by the red blood cells.
hypokalemia
This may be seen in massive transfusion patients due to citrate anticoagulant.
hypocalcemia
These two disorders may be caused by a decrease in citrate and lactate metabolism.
hypocalcemia
metabolic acidosis
cold toxicity (hyopthermia) and increased cardiac dysrhthmias may be seen in what transfusion patients?
massive transfusion
This abnormalities may be due to dilution of platelets or coagulation factors during massive transfusion.
coagulation abnormalitites
hemostatic derangement in massive transfusion is due to ____________ mor than transfusion.
hyoptension
before transfusion patient must give _________ consent.
informed
patient preparations, is who's responsibility?
transfuser's
History of what two drugs should be checked before transfusion?
antihistamines
anti-pyretics
IV meds may be given immediately _______ to transfusion.
prior
oral meds are give ________ prior to transfusiton
30-60 min
what gauge needle is used for transfusion?
18-19 gauge
what gauge needle is used for pediatrics?
23 gauge scalp vein needle
Administer ______ components through filters designed to remove blood colots/debris.
all
this infusion set has an in-line filter with a 170-260 micron pore size to trap lage clots.
standard blood infusion sets.
what is the micron pore size of the rapid infusion device?
> or = to 300 microns pore size
gravity drip sets are used for what two blood products?
PLTs and CRYO
this infusion set is used for small volumes with in line filter.
syringe push sets
this infusion set is used for RBC transfusion, has a 20-40 micron pore size, and traps aggregates fo degenerating platelets, white cells, and fibrin strands.
micro-aggregate filters
this infusion set reduces risk of HLA alloimmunization, traps leukocytes but not RBCs and platelets.
leukocyte reduction filters
blood warmers should be used to decrease what two things?
cardiac arrest
Txn Rxn with cold Ab
Blood warmers should have a thermometer, audible alarm and must not warm blood past what temp?
>42oC
These infusion sets have a mechanical pump with controlled delivery rate.
electromechanical infusion device.
This electromechanical infusion device is used to speed up infusion?
pressure device
this electromechanical infusion device is used to recover blood during operations.
interoperative and postoperative blood collection (Cell Saver)
Compatible I.V. solutions administered with blood products should be approved by who?
FDA
Accurate ID of donor with the recipient should be checked at what two times?
donor issuance
transfusion
If transfusion cannot be started within ____ minutes, blood should be returned to the blood bank for proer storage.
30 minutes
Transusionist should remain with the patients for at least the first ___ minutes of transfusion?
15 minutes
after 15 minutes of transfusion, transfusionist should check what?
vital signs
Normal transfusion are completed within ____ hours. maximum is ____ hours.
2 hours
4 hours
what three factors affect the rate of transfusion?
patient's blood volume
cardiac status
hemodynamic condition
Any unfavorable patient response to transfusion is called what?
transfusion reactions
This is a transfusion reaction with red cell destruction due to incompatibility.
hemolytic transfusion reaction
how much incompatible blood can cause a hemolytic transfusion reaction?
10-15ml
This transfusion reaction is extremely life threatening.
hemolytic transfusion reaction
this transfusion reaction is characterized by fever, chills, pain, nausea, flushing, hypotension, bleeding, shock, and hemoglobinuria.
hemolytic transfusion reaction
what is the therapy for hemolytic transfusion reaction.
maintain BP with colloids
use diuretics for urine flow
this transfusion reaction can be prevented with attention to detail.
hemolytic transfusion reaction
a temperature change of __ degree celcius indicates a febrile transfusion reaction.
1
this is the most frequently encountered transfusion reaction.
febrile transfusion reaction
this transfusion reaction is characterized by fever and chills and should be treated with antipyretics
febrile
what blood product should be used to prevent febrile transfusion reactions?
leukocyte-poor blood
This transfusion reaction is caused by an antibody to plasma proteins and is characterized by itching and hives.
mild allergic-urticarial
what is the therapy/prevention of mild allergic- urticarial transfusion reactions?
antihistamine
this transfusion reaction is caused by an antibody to IgA and is characterized by urticaria, shock, wheezing, and cardiac arrest.
anaphylactic
what is the therapy for anaphylactic transfusion reaction?
epinephrine
what is the preventionof anaphylactic transfusion reactions.
washed cellular products and IgA deficient plasma
This non immune transfusion reaction is caused by bacterial contamination.
sepsis
This transfusion reaction is characterized by a rapid onset of chills, high fever, vomiting, diarrhea, hypotension, shock, DIC.
sepsis
what is the therapy for sepsis?
IV antibiotics
vasopressors
steroids
how is sepsis prevented in transfusion?
aseptic technique
This transfusion reaction is caused by fluid administered faster than circulation can accommodate.
circulatory overload
this transfusion reaction is characterized by cough, headache, pulmonary congestion, hypertension and tachycardia.
ciculatory overload
what is the therapy for circulatory overload?
upright position
diuretics,
oxygen
phlebotomy
who is at high risk for circulatory overload?
old
young
debilitated
this transfusion reaction is caused by an anamnestic antibody, kidd system is notorious.
delayed hemolytic transfusion reaction
delayed hemolytic transfusion reactions usually occur _______ days after transfusion.
7-14 days
This transfusion reaction is characterized by slight fever, mild jaundice, and fall in Hct usually 7-14 days after transfusion.
delayed hemolytic
true or false
treatment is rarely needed for delayed hemolytic transfusion reactions.
true
this is any adverse symptom occurring during transfusion.
suspected transfusion reaction
what is the first course of action for suspected transfusion reactions?
STOP transfusion immediately
medical and nursing presonnel should report suspected reactions to who?
blood bank
what is the blood bank test used to check for possible transfusion reactions?
DAT
absence of hemoglobinemia and a negative DAT suggests ___ acute immune hemolytic reactions.
no
What three tests should be repeated with pre and post transfusion samples to investigate for possible alloantibodies.
ABO/Rh
Crossmatch
antibody detection
What tests should be performed on donor unit to test for possible bacterial contamination?
blood culture
gram stain
who should be notified of transfusion reaction fatalities?
navy blood program office (NBPO)
FDA via NBPO
This is an Ab induced hemolytic anemia where mother has IgG antibody and fetus has the corresponding antigen.
hemolytic disease of the newborn
HDN begins in ________ and continues after _______.
utero
birth
HDN causes a _______ anemia where hemolytic is maximal at birth and diminishes as concentration of maternal Ab declines in infant circulation.
temporary
This is when fetal RBCs enter maternal blood system.
Feto-Maternal hemorrhage
Immunization is possible when fetal cells possess ________ antigen foreign to mother.
paternal
highest incidence of maternal immunization is when?
at time of delivery
What are three other maternal immunizing events besides delivery?
amniocentesis
miscarriage
abortion
HDN will causes what two organs to become enlarged in newborn?
liver
spleen
this clinical finding of HDN is secondary to anemia prior to brith.
cardiac failure
HDN causes this type of edema.
hydrop fetalis
this clinical finding of HDN is associated with deficient glucouronyl transferase.
jaundice after birth
Brain damage in HDN is caused by Kernicterus with what critical bilirubin level?
20mg/dl
what are the six laboratory finding of HDN?
NRBC in fetus
many retics
high bilirubin
low HgB/HcT
spherocytes (ABO HDN only)
Weak DAT (+/=)
this laboratory finding is specifically indicates ABO HDN.
Spherocytes
Subclinical HDN is common in ____ HDN and is detected by a positive DAT.
ABO
This is an uncommon form of HDN that is symptomatic and requires treatment.
clinical HDN
This form of HDN is usually do to Rh HDN (D antigen)
Clinical HDN
Clinical HDN severity can vary from a ______ disease to intrauterine ______.
mild
death
This finding indicates severity of clinical HDN in newborn.
cord hemoglobin
in clinical HDN there is an inverse relationship between cord blood ____ and serum ________ level.
HgB
bilirubin
What cord Hgb value indicates mild HDN.
above 13 gm/dl
what cord HgB value indicates moderate HDN.
between 8-13 gm/dl
what cord Hgb value indicates severe HDN?
under 8 gm/dl
this is the most common form of HDN.
ABO
this HDN is mild and usually does not need transfusion/treatment.
ABO
ABO HDN is seen with what DAT results?
weak positive
negative
ABO HDN is seen in group ___ mothers with group ___ or __ infants.
O mother
A or B infant
The following eluate reactions indicate what antibody causing HDN?
A cells: +
B cells: =
Anti-A
The following eluate reactions indicate what antibody causing HDN?
A cells: =
B cells: +
Anti-B
The following eluate reactions indicate what antibody causing HDN?
A cells: +
B cells: +
Anti-AB
Rh HDN is caused by what maternal antibody?
Anti-D
Rh HDN is seen in Rh ____ mom with Rh ____ fetus.
NEG mom
POS fetus
What DAT result indicates Rh HDN?
strong POS
This HDN is usually a severe disease which requires treatment.
Rh
this HDN is characterized by a rapid increase in bilirubin
Rh HDN
treatment in Rh HDN is usually required to correct what?
anemia
high bilirubin
This uncommon HDN is caused by other antibodies including those of Rh system except anti-D.
other HDN
This is done to Id women at risk of having HDN baby, ID mom's ABO and Rh, antibody screen.
routine prenatal testing
These two Thiol reagents are sued to differentiate unexpected maternal antibodies.
2-mercaptoethanol (2-ME)
Dithiothreitol (DTT)
Antibody titrations are performed on what class of maternal unexpected antibodies?
IgG
maternal unexpected antibodies should be titered how often untill delivery?
monthly
high titers that are increasing __ tubes or more indicates severe HDN in progress
2
true or false
titer alaways correlates with severity of HDN.
false
dilutions greater than ___ or a score change greater than ___ indicates significant change in unexpected maternal antibody titer.
2
10
true or false
maternal antibody titer serum should be saved for comparison titer the next month.
true
What are the two indications for aminocentesis?
history of HDN infant
high or increasing titers of IgG antibody
amniocentesis is never indicated for what type of HDN.
ABO
this is the process by which amniotic fluid is removed from amniotic sac.
amniocentesis
amniotic fluid is tested by ___________ for bilirubin like pigments (fetal hgb breakdown).
spectrophotometry
amniotic fluids become increasingly _________ with HDN.
yellowish
what is the normal color of amniotic fluid?
colorless
this is the best method of determining severity of in-utero hemolysis (HDN) prior to brith.
amniocentesis
HDN is also known as what?
Erythroblastosis fetalis
Aminocentesis indicates the amount of _______ that fetus is suffering.
anemia
Amniotic fluid is tested at what wavelength?
OD 450 nm
Aminocentesis is plotted on what type of graph?
liley
liley versus weeks gestation
low zone values on liley graph indicate what?
mild hemolysis
mid zone values on liley graph indicate what?
moderately affected
requires treatment after birth
top zone values on liley graph indicates what?
fetus may die
if top zone values are indicated on liley graph, deliver infant if L/S ration (lecithin/sphingomyelin) above ___ indicates fetal lung maturity.
2
intrauterine transfusion is performed with what liley graph values?
top zone
this type of transfusion is done prior to brith to treat severe anemia and keep infant alive until delivery is possible.
intrauterine
intrauterine transfusion is injected into where?
into fetus via umbilical cord
this type of transfusion is done after birth to remove sensitized newborn cells and treat high bilirubin and sever anemia.
exchange transfusion
exchange transfusion reduces the amount of ______ antibody in HDN.
maternal
this transfusion is done in HDN with iatrogenic blood loss to mantain Hct above 40%
replacement transfusion
intrauterine should be done with PRBCs with what HCT?
80-90%
blood for intrauterine transfusion should be no more than __ days old.
5
what blood type should be used for intrauterine transfusion?
o neg only
Intrauterine transfusion donor units should be crossmatched compatible with ________ serum.
mother's
Intrauterine transfusion blood units should be irradiated and washed to remove what antibodies?
ABO
Exhange transfusion blood should be PRBC units mixed with FFP or 5% albumin to attain whole blood with HCT of what?
40-50%
true or false
exhange transfusion donor cells should be ABO compatible with mother and infant.
true
ABO HDN exhange transfusion units should be the ______ group and _____ Rh or group O.
mother's group
Babies's Rh
Rh HDN Exchange transfusion units should be _________ Rh, ________ group or group O.
mother's Rh
Babies group
for other HDN exchange transfusion, use the same ABO/Rh as infant or group O. Donor unit must _____ maternal Ab.
lack
this is commercially prepared IgG anti-D which prevents immunization.
Rh immune globulin
RhIg is a standard ____ug dose
300
RhIg is given within ____ hours
72
RhIg destroys ___ ml Rh WB or __ ml PRBC
30ml Rh WB
15 ml PRBC
What is the criteria for RhIg?
mother is Rh neg
Mother is NOT producing Anti-D
infant is Rh pos or unknown
what are the two contraindications fo RhIg?
Hx of IgA deficeincy
Hx of anaphylactic reactions
RhIg contains trace amounts of what class of antibody?
IgA
This is a qualatative fetal bleed screen test.
Rosette test
the Rosette test will detect as little as ____ml or less fetal maternal hemorrhage.
10 ml
D pos fetal cells + reagent (anti-D) + D pos indicator cells = rosettes, is the principle of what test?
rosette test
this is a quantitative test that measures the volume of fetal cells in mother's circulation.
Kleihauer-Betke Test
this test indicates a need for multiple doses of RhIg
Kleihauer-Betke Test
This test is also called the Acid Elution Stain method.
Kleihauer-Betke test
The Kleihauer-Betke test principle is that:
______ Hgb is NOT acid soluble
______ Hgb is acid soluble
fetal hgb (Hgb F)
Adult Hgb (Hgb A)
normal adult Hgb F value is what?
<0.4%
in Kleihauer-Betke test, a smear of maternal blood is made and fixed in ethanol, then treated with acid buffer, _____ hgb is lost from cells while ____ hgb remain in fetal cells.
adult hgb is lost
fetal hgb remains
in Kleihauer Betke test, the smear is stained with what two stains?
Erythrocin B
Hematolxylin
after the smear is stained in Kleihaur-betke test, _______ cells appear as pale ghosts, and ______ cells take stain and appear as bright pink-red cells.
adult cells = pale ghosts
fetal cells = bright pink-red cells
how are test result calculations preformed on the kleihauer-Betke test?
count # of fetal cells seen while counting 2000 adult cells
determine % fetal cells in total count
% fetal cells x 50= WBFC
# of RhIG = WBFC/30+1
calculate how many RhIg doses to give a patient with 1.3% fetal cells by acid elution
1.3x50=65 ml fetal cells
65/30=2.2
2.2+1=3.2
round to 3
3 vials RhIg needed
what are the three routine tests performed at the first trimester?
ABO
Rh
Antibody screen
Routine tests at first trimester are to ID who?
women at risk of HDN infants
For Rh negative mother antibody screen is repated at ___ weeks gestation and give RhIg anternatally.
28
if IgG antibodies are found in an Rh negative mother what should be done?
titer
This is a semiquantitative method of determining antibody content, used to determine when to monitor fetus for HDN by amniocentesis.
prenatal antibody titration
what are errors that affect interpretation of prenatal antibody titration
variations in technique can cause results to differ by as much as plus or minus one dilution
cord blood in suspected HDN cases should be tested for what three things?
Hgb
Hct
Bilirubin
cord blood should be washed how many times?
4-6 times
what ABO testing should be done on cord blood?
forward only
when is elution performed on cord blood?
if DAT IgG positive
in this specimen, accurate Rh testing is difficult in cells are heavily coated with IgG antibodes.
cord blood
this is a fast elution test where freezing ruptures cells to release antibody.
Lui Rapid Freeze
After Cord RBC's are washed 6 times this should be saved for later testing?
final supernatant
what quantity of washed cord RBCs are sued to test for Lui Rapid Freeze elution?
0.5ml
how many drops of saline are added to the 0.5 ml washed cord RBC's in lui rapid freeze?
3 drops
in Lui rapid freeze, cord RBC's and saline are placed horizontally at what temperature for 10 minutes?
-20 to -70
in Lui Rapid Freeze, the eluate is tested in paralell with what?
final wash
any positive reaction on which Lui Freeze sample indicates an invalid test?
final wash
a positve eluate reaction with O cells in Lui Freeze indicates what antibody?
unexpected antibody
a positive eluate reaction with A cells in Lui Freeze indicates what antibody?
anti-A
a positive eluate reaction with AB cells in Lui Freeze indicates what antibody?
Anti-AB
What can cause a false positve on Cord RBC elution?
High protein diluent or Wharton Jelly contamination
False positves on Cord cell elutions will causes what tube to be positive?
Rh control tube
Fetal cells heavily coated with mother's antibody (Anit-D), can causes what false result when performing Cord Cell elution?