Author Question: HIV may be perinatally transmitted: a. Only in the third trimester from the maternal circulation. ... (Read 17 times)

jeatrice · **on:** Jun 28, 2018

HIV may be perinatally transmitted:

a. Only in the third trimester from the maternal circulation.
b. From the use of unsterile instruments.
c. Only through the ingestion of amniotic fluid.
d. Through the ingestion of breast milk from an infected mother.

Question 2

Which infant would be more likely to have Rh incompatibility?

a. Infant of an Rh-negative mother and a father who is Rh positive and homozygous for the Rh factor
b. Infant who is Rh negative and whose mother is Rh negative
c. Infant of an Rh-negative mother and a father who is Rh positive and heterozygous for the Rh factor
d. Infant who is Rh positive and whose mother is Rh positive

bubulittle310@msn.cn · **Reply #1 on:** Jun 28, 2018

Answer to Question 1

ANS: D
Postnatal transmission of HIV through breastfeeding may occur. Transmission of HIV from the mother to the infant may occur transplacentally at various gestational ages. This is highly unlikely because most health care facilities must meet sterility standards for all instrumentation. Transmission of HIV may occur during birth from blood or secretions.

Answer to Question 2

ANS: A
If the mother is Rh negative and the father is Rh positive and homozygous for the Rh factor, all the children will be Rh positive. Only Rh-positive children of an Rh-negative mother are at risk for Rh incompatibility. If the mother is Rh negative and the father is Rh positive and heterozygous for the factor, there is a 50 chance that each infant born of the union will be Rh positive and a 50 chance that each will be born Rh negative.