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MLT 106 Unit 6 Questions with All Correct Answers

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MLT 106 Unit 6 Questions with All Correct Answers Which test is used to predict anemia in the fetus by indicating direction of blood flow using ultrasonography? - Answer-Color Doppler MCA-PSV True or false: The DAT on the cord or neonatal RBCs is the most important diagnostic test. - Answer-Tr...

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  • September 6, 2024
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  • 2024/2025
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MLT 106 Unit 6 Questions with All
Correct Answers

Which test is used to predict anemia in the fetus by indicating direction of blood flow
using ultrasonography? - Answer-Color Doppler MCA-PSV

True or false: The DAT on the cord or neonatal RBCs is the most important diagnostic
test. - Answer-True

The relative concentration of all antibodies capable of crossing the placenta and
causing HDFN is determined by: - Answer-Antibody titration

Reduces the amount of hemolysis by competing with the mothers antibodies for the Fc
receptors on the macrophages in infant's spleen: - Answer-Intravenous Immune
Globulin (IVIG)

Most centers treating for HDFN use group _____ RBCs for intrauterine as well as
neonatal transfusions. - Answer-O NEG

What tests will the presence of an autoantibody complicate? - Answer--ABO/Rh typing
-Antibody screening
-Compatibility testing

If a patient's RBCs are coated with autoantibody, the patient may present with: -
Answer--Serological ABO discrepancy
-A positive Rh control
-A positive DAT

True or false: Immune hemolytic anemia is defined as a lengthened RBC survival
mediated through humoral antibody production. - Answer-False

Before the presence of an AIHA is established, it's important to verify presence of: -
Answer-Immune-mediated RBC destruction

Evidence for increased RBC destruction includes: - Answer--Increase in reticulocyte
count
-Increase in unconjugated bilirubin levels
-Increase in lactate dehydrogenase levels
-Decrease in haptoglobin

True or false: Uncompensated anemia occurs when RBC production will nearly equal
the rate of RBC destruction. - Answer-False

, The test DAT and characterization of the autoantibody is used to confirm what? -
Answer-AIHA

What tests doe the cold autoagglutinins affect? - Answer-ABO typing, Rh typing, and
DAT

True or false: Autoanti-I is the most commonly encountered cold autoantibody that is
directed against an Ag found on RBC of most donors. - Answer-True

Most cold reactive autoantibodies have _____ specificity. - Answer-Anti-I

True or false: Anti-H distinguishes between cells of various ABO groups. - Answer-True

Group _____ and _____ cells react best with anti-H because they have the largest
amount of H antigens. - Answer-O; A2

What cold autoagglutinin is found more commonly in the serum of A1 and A1B
individuals? - Answer-Anti-IH

Which hepatitis virus is dependent upon the presence of the Hepatitis B virus? -
Answer-Hepatitis D virus

What method is currently being used in the detection of HIV infection in humans? -
Answer-Enzyme immunoassay

What is known to cause meningoencephalitis as a human, avian and equine
neuropathogen? - Answer-West Nile virus

An ABO HDFN in a group B infant group of a group O mother is more commonly found
in which population? - Answer-African American

The detection of fetal red blood cells containing Hgb F is shown as _____ in the
Kleibauer-Betke test. - Answer-Pink

What type of transfusion is used to prevent kernicterus? - Answer-Exchange transfusion

During 10-12 weeks gestation, what can be used to test for the presence of the D
antigen in the fetus? - Answer-Fetal DNA testing

Cold AIHA is sometimes associated with infection in: - Answer-Mycoplasma
pneumoniae

Immune hemolytic anemias may be classified in what categories? - Answer-
Alloimmune, autoimmune, and drug-induced

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