Blood Bank Exam 5 Latest Questions
with Complete Solutions.
Immunization of the mother can be caused by as little as ____________ D-positive fetal cells. -
Answer 1 mL
Which prenatal serologic tests are recommended during the trimester? - Answer Antibody
screen, Rh, ABO
Which of the following treatments uses ultraviolet light to treat hyperbilirubinemia after the
infant is delivered? - Answer Phototherapy
Which of the following antibodies have not been known to cause HDFN? - Answer Anti-Le^a
Which of the following red blood cells is appropriate for neonatal transfusions? - Answer
Group O, CMV-negative
How is an intrauterine transfusion performed? - Answer RBCs are injected into the fetal
peritoneal cavity
Which of the following assays is used to calculate the amount of fetomaternal hemorrhage in a
postpartum specimen? - Answer Kleihauer-Betke test
Rh-immune globulin should be given within how may hours after delivery? - Answer 72
hours
Why is the Rh-positive firstborn of an Rh-negative mother unaffected by Rh hemolytic disease of
the fetus and newborn (Rh HDFN)? - Answer The mother has not been immunized to the D
antigen before placental separation
Active immunization induced by Rh(D) antigen can be prevented by the concurrent
administration of? - Answer Rh-Immunoglobulin
The results of the Kielhauer-Betke stain indicates a fetomaternal bleed of 40 mL of whole blood.
How many vials of Rh-immune globulin would be required? - Answer 2 vials
Which RBC morphology is most characteristic in ABO HDFN and absent in Rh HDFN? - Answer
Microspherocytes
, Why is reverse grouping omitted in the neonate ABO grouping? - Answer Newborns do not
yet produce ABO antibodies of their own
All of the following are goals of an exchange transfusion except? - Answer To remove high
levels of conjugated bilirubin
How are units for exchange transfusion prepared? - Answer Group O red blood cells and
group AB plasma
Which of the following best describes the principle of the Kielhauer-Betke test? - Answer
Fetal hemoglobin is resistant to acid (alkali) and appears pink, whereas maternal red blood cells
appear as ghost cells
The D-positive fetal cells in Rh-HDN are____? - Answer Heterozygous
Due to a short supply of O-negative packed cells, an Rh-negative patient was transfused with 1
unit of Rh-positive red blood cells. Calculate the number of Rh-immune globulin vials needed to
protect against 250 mL of Rh-positive packed cells. - Answer 17
What is the cause of HDFN? - Answer Destruction of the fetus's RBCs by antibody produced
by the mother
What life-threatening disorder is characterized by a severe anemia, effusions, and ascites from
hepatomegaly and splenomegaly? - Answer Hydrops fetalis
How can persons with CHD avoid hemolytic episodes? - Answer Move to a warm climate
Which of the following signifies intravascular hemolysis in AIHA? - Answer Hemoglobinuria
Which is the most frequent antibody specificity in CHD? - Answer Anti-I
Which of the following is a characteristic red blood cell morphology seen on a peripheral blood
smear from a patient with warm autoimmune hemolytic anemia? - Answer Spherocytes
An EDTA sample is preferred over a clotted sample for performing DAT testing because? -
Answer The EDTA prevent complement binding in-vitro
with Complete Solutions.
Immunization of the mother can be caused by as little as ____________ D-positive fetal cells. -
Answer 1 mL
Which prenatal serologic tests are recommended during the trimester? - Answer Antibody
screen, Rh, ABO
Which of the following treatments uses ultraviolet light to treat hyperbilirubinemia after the
infant is delivered? - Answer Phototherapy
Which of the following antibodies have not been known to cause HDFN? - Answer Anti-Le^a
Which of the following red blood cells is appropriate for neonatal transfusions? - Answer
Group O, CMV-negative
How is an intrauterine transfusion performed? - Answer RBCs are injected into the fetal
peritoneal cavity
Which of the following assays is used to calculate the amount of fetomaternal hemorrhage in a
postpartum specimen? - Answer Kleihauer-Betke test
Rh-immune globulin should be given within how may hours after delivery? - Answer 72
hours
Why is the Rh-positive firstborn of an Rh-negative mother unaffected by Rh hemolytic disease of
the fetus and newborn (Rh HDFN)? - Answer The mother has not been immunized to the D
antigen before placental separation
Active immunization induced by Rh(D) antigen can be prevented by the concurrent
administration of? - Answer Rh-Immunoglobulin
The results of the Kielhauer-Betke stain indicates a fetomaternal bleed of 40 mL of whole blood.
How many vials of Rh-immune globulin would be required? - Answer 2 vials
Which RBC morphology is most characteristic in ABO HDFN and absent in Rh HDFN? - Answer
Microspherocytes
, Why is reverse grouping omitted in the neonate ABO grouping? - Answer Newborns do not
yet produce ABO antibodies of their own
All of the following are goals of an exchange transfusion except? - Answer To remove high
levels of conjugated bilirubin
How are units for exchange transfusion prepared? - Answer Group O red blood cells and
group AB plasma
Which of the following best describes the principle of the Kielhauer-Betke test? - Answer
Fetal hemoglobin is resistant to acid (alkali) and appears pink, whereas maternal red blood cells
appear as ghost cells
The D-positive fetal cells in Rh-HDN are____? - Answer Heterozygous
Due to a short supply of O-negative packed cells, an Rh-negative patient was transfused with 1
unit of Rh-positive red blood cells. Calculate the number of Rh-immune globulin vials needed to
protect against 250 mL of Rh-positive packed cells. - Answer 17
What is the cause of HDFN? - Answer Destruction of the fetus's RBCs by antibody produced
by the mother
What life-threatening disorder is characterized by a severe anemia, effusions, and ascites from
hepatomegaly and splenomegaly? - Answer Hydrops fetalis
How can persons with CHD avoid hemolytic episodes? - Answer Move to a warm climate
Which of the following signifies intravascular hemolysis in AIHA? - Answer Hemoglobinuria
Which is the most frequent antibody specificity in CHD? - Answer Anti-I
Which of the following is a characteristic red blood cell morphology seen on a peripheral blood
smear from a patient with warm autoimmune hemolytic anemia? - Answer Spherocytes
An EDTA sample is preferred over a clotted sample for performing DAT testing because? -
Answer The EDTA prevent complement binding in-vitro
