Hemolytic disease of the newborn (HDN)

Question 1

Hemolytic disease of the newborn (HDN) can occur if the mother:

Is Rh-positive and the fetus is Rh-negative

Is Rh-negative and the fetus is Rh-positive

Has type A blood and the fetus has type O

Has type AB blood and the fetus has type B

Question 2

Examination of the throat in a child demonstrating signs and symptoms of acute epiglottitis may contribute to which life-threatening complication?

Retropharyngeal abscess

Laryngospasms

Rupturing of the tonsils

Gagging induced aspiration

Question 3

If the sinoatrial (SA) node fails, then at what rate (depolarizations per minute) can the atrioventricular (AV) node depolarize?

60 to 70

40 to 60

30 to 40

10 to 20

Question 4

What is the ratio of coronary capillaries to cardiac muscle cells?

1:1 (one capillary per one muscle cell)

1:2 (one capillary per two muscle cells)

1:4 (one capillary per four muscle cells)

1:10 (one capillary per ten muscle cells)

Question 5

Which cytokines initiate the production of corticotropin-releasing hormone (CRH)?

IL–1 and IL-6

IL-2 and TNF-?

IFN and IL-12

TNF-ß and IL-4