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BB Exam 4 - Hemolytic Disease of the Newborn
Lecture 27
70
Biology
Undergraduate 3
03/14/2015

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Cards

Term
What are the 2 types of HDN?
Definition
IgG
ABO
Term
What is the Most common type of HDN?
Definition
ABO
Term
Can ABO HDN occur in the first pregnancy?
Definition
Yes
Term
True or False:
ABO HDN is usually NOT very serious clinically
Definition
True
Term
Do ABO HDN need transfusions or exchanges?
Definition
Almost never need transfusion much less exchange
Term
True or False:
ABO HDN - Anemia and Jaundice if present are mild
Definition
True
Term
What is elevated in ABO HDN, but rarely goes above 14 mg/dL?
Definition
Bilirubin
Term
What will you often see on ABO HDN baby's blood smear?
Definition
Spherocytes
Term
True or False:
ABO incompatibility may protect against anti-D HDN
Definition
True
Term
Small bleeds occur during ____% of pregnancies
Definition
50%
Term
True or False:
IgG HDN - Baby's spleen will destroy all cells coated with ABY and the baby will become anemic
Definition
True
Term
What is Hydrops fetalis characterized by?
Definition
edema related to severe anemia
Term
What is the cause of IgG HDN?
Definition
Baby's RBCs enter maternal circulation
Term
True or False:
IgG HDN - Larger bleeds capable of inducing sensitization usually occur at the time of delivery when the placenta tears away
Definition
True
Term
Clinical effects of HDN -
Inutero what is the main problem?
Definition
Anemia
Term
Clinical effects of HDN -
Why is anemia the main problem inutero?
Definition
Mom's liver conjugates the bilirubin produced by breaking RBCs
Term
Clinical effects of HDN -
After birth, anemia is still a problem, but what is of greater concern?
Definition
Elevated Bilirubin
Term
In the baby, elevated levels of what cause kernicterus?
Definition
Indirect Bilirubin
Term
You should do a blood exchange at what amount of indirect bilirubin for a term infant?
Definition
18-20 mg/dL
Term
What are the 2 types of IgG HDN?
Definition
Anti-D
Other blood groups
Term
Which of the 2 types of IgG HDN is the most severe?
Definition
Anti-D
Term
True or False:
Anti-D IgG HDN can only occur in second pregnancy unless Rh negative mom received a prior transfusion with Rh positive blood
Definition
True
Term
With Anti-D IgG HDN what will the baby's DAT be?
Definition
Strongly Positive
(2-3+)
Term
True or False:
Anti-D IgG HDN often requires inutero transfusion and exchange transfusion after delivery
Definition
True
Term
True or False:
Any significant system AGN is capable of inducing an antibody in the mom and causing HDN
Definition
True
Term
True or False:
If the maternal's IAT is positive, you must perform a panel to identify the ABY
Definition
True
Term
If the mother has an anti-D what must be done?
Definition
Tittered
Term
___ tube increase is considered significant
Definition
2
Term
A single titer of _____ is considered significant
Definition
1:32
Term
If the mom has a rising anti-D titer, what may be indicated?
Definition
Amniocentesis
Cordocentesis
Spectral Scan
Term
The Most Serious outcome is if ______ is high early in pregnancy (zone 3 or top zone on Liley graph)
Definition
Optical density
Term
If ____ ____ indicates HDN:
Deliver baby as soon as L/S ratio indicates lung maturity
In utero transfusion
Follow mom closely
Definition
Spectral Scan
Term
What does PUBS stand for?
Definition
Percutaneous umbilical blood sample
Term
With PUBS what do you check to assure that the blood is really on the baby?
Definition
MCV
Term
What must the MCV be to assure that the blood is really from the baby?
Definition
>110 fL
Term
What 3 tests do you perform with PUBS?
Definition
ABO
Rh
DAT
Term
What should you blood be like for a Intrauterine transfusion?
Definition
O = or type compatible with mom & baby
AGN = of ABY causing HDN
CMV =, fresh, irradiated
Term
For Intrauterine transfusions you should crossmatch with whose serum?
Definition
Mom's Serum
Baby's Serum
Eluate
Term
If you are doing a Newborn Workup and you use the cord blood what is something you are likely going to have to do?
Definition
Extra washings to get rid of Wharton's Jelly
Term
True or False:
If intrauterine transfusion was done, baby forward type may be almost impossible to determine
Definition
True
Term
How many times should the Newborn workup DAT be washed?
Definition
5 times
Term
Newborn workup - What do you do if DAT is positive?
Definition
Eluate
Term
What type of Eluate is BEST for ABO HDN?
Definition
Lui freeze
Term
Describe the Lui Freeze
Definition
Wash cells, freeze, thaw to release ABY into solution
React eluate with the following cells at 37 degrees Celsius and AHG
Term
ABO HDN -
DAT on Baby is _____
Mom's IAT is ______
Definition
Weak
Negative
Term
What can be used to treat ABO HDN?
Definition
Phototherapy
Term
Will the Rh control be + or = if +DAT unless one used monoclonal Anti-D because it will be detected at RT?
Definition
Positive
Term
When the mom's Anti-D is VERY Increased what could be inhibiting testing?
Definition
Blocked D Typing
Term
What Eluate is BEST for Rh and Other ABYs?
Definition
(Digitonin) Elu II or ether
Term
What do you perform Elu II or ether?
Definition
When baby has positive DAT, the mom's IAT is positive, and the blood types do not indicate ABO HDN
Term
True or False:
Baby with Anti-D HDN can type as Rh = if all the D AGN sites are covered by maternal Anti-D
Definition
True
Term
If _____ is eluted from baby's cells, one can assume that the baby is D positive
Definition
Anti-D
Term
Eluate plus A= RBC Reaction +
Interpretation: ______
Definition
Anti-A, Anti-B, or Anti-A,B
ABO HDN
Term
Eluate plus B= RBC Reaction +
Interpretation: ______
Definition
ABO HDN
Anti-A, Anti-B, or Anti-A,B
Term
Eluate plus O+ RBC, Reaction +
Interpretation:_______
Definition
Rh HDN due to Anti-D
Term
When would an exchange transfusion be performed?
Definition
Baby is anemia and Bilirubin is High
Term
Indirect bilirubin of _____ or HIGHER will cross the blood brain barrier
Definition
20 mg/dL
Term
Will an Exchange Transfusion raise or lower Bilirubin?
Definition
Lower
Term
True or False:
Exchange Transfusion will remove Maternal ABYs and damaged RBCs
Definition
True
Term
True or False:
Exchange Transfusion will provide normal RBCs for O2 carrying
Definition
True
Term
What type of blood do you use for Exchange Transfusions?
Definition
Packed cells mixed with Compatible FFP
ABO compatible
AGN = for Mom's ABY
Term
Should the ABO & FFP be compatible with the mom's or the baby's RBCs for Exchange transfusions?
Definition
Baby's
Term
Exchange Transfusion - Double Crossmatch using what?
Definition
Mom's serum & Baby's serum or eluate
Term
What is the procedure for Exchange Transfusion?
Definition
Remove a small amount of baby's blood
Exchange with BB blood
Term
What is the MOST Common reason for Neonatal transfusion?
Definition
Replace Blood drawn for lab tests
Term
True or False:
Exchange Transfusion - If IAT is =, crossmatch is NOT required as long as ABO compatible
Definition
True
Term
Exchange Transfusion - Units Transfused -
Must be fresh (under ___ days old)
Definition
5
Term
Exchange Transfusion - Units Transfused -
Must be CMV = for all babies under ______ grams
Definition
1200
Term
Exchange Transfusion - Units Transfused -
Must be ____ to prevent TA-GVHD in immunologically impaired preemies
Definition
Irradiated
Term
What should you use instead of Adsol for Exchange Transfusion?
Definition
CPDA-1
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