Quiz 2 - OB and Neonatal

Routine testing on a prenatal patient should include—

a. ABO/Rh, Antibody Screen, Antibody Identification, and Titer

b. Direct Coombs

c. ABO/Rh and Antibody Screen

ABO/Rh, Fetal Bleed Screen, and KB Stain

a. ABO/Rh, Antibody Screen, Antibody Identification, and Titer

Conditions in which OB patients are considered a candidate for RhIg are—

a. Mom is D negative and not sensitized to D antigen, Baby D or weak D positive

b. Mom is D negative and sensitized, Baby D or weak D positive

c. Mom is D negative and not sensitized to D antigen, Baby D or weak D negative

d. Mom is D positive, Baby D negative

a. Mom is D negative and not sensitized to D antigen, Baby D or weak D positive

Testing on a cord blood reveals a mixed field reaction with Anti-A typing sera. A heelstick is obtained and the same reaction is noted. The most likely explanation is—

a. Maternal contamination

b. Contamination due to Wharton’s jelly

c. ABO subgroup

d. HDFN

c. ABO subgroup

Fetal Bleed Screen—

a. calculate RhIg dose

b. quantitate a fetomaternal bleed

c. detect Rh positive red cells in an Rh negative person

d. detect fetal hemoglobin

c. detect Rh positive red cells in an Rh negative person

The largest fetomaternal bleed usually occurs—

a. in the first trimester

b. in the second trimester

c. in the third trimester

d. at delivery

d. at delivery

The diagnosis of ABO-HDN is made—

a. during delivery

b. after delivery

c. at 28 weeks

d. during prenatal testing

b. after delivery

The ABO and Rh of a pregnant woman should be established—

a. early in the pregnancy

b. late in the pregnancy

c. after delivery

d. timing is irrelevant

a. early in the pregnancy

The main differences between the fetus and the newborn when HDFN is present—

a. bilirubin metabolism

b. size of the RBC

c. presence of anemia

d. maternal antibody level

a. bilirubin metabolism

When severe HDFN due to unidentified incompatibility is evident, which of the following should be used for the exchange transfusion?

a. paternal RBCs

b. any fresh unit of RBCs

c. maternal RBCs

d. RBCs from maternal siblings

b. any fresh unit of RBCs

If an A positive mother who has an anti-K delivers an O negative infant with a 2+ positive DAT, what type of blood would be the best choice for use in an exchange transfusion?

a. Group O negative, K negative, CMV negative, sickle cell negative, washed, irradiated, leukoreduced red cells

b. Group A positive, K negative, CMV negative, sickle cell negative, washed, irradiated, leukoreduced red cells pooled with AB plasma

c. Group O negative, K negative, CMV negative, irradiated whole blood

d. Group O negative, K negative, CMV negative, sickle cell negative, irradiated, leukoreduced red cells pooled with AB plasma

d. Group O negative, K negative, CMV negative, sickle cell negative, irradiated, leukoreduced red cells pooled with AB plasma