A nursing student is assigned to a client in labor. The nursing instructor asks the student to
describe fetal circulation, specifically the ductus venosus. The instructor determines that the
student understands the structure of the ductus venosus if the student states that it:
a. Connects the pulmonary artery to the aorta
b. Is an opening between the right and left atria
c. Connects the umbilical vein to the inferior vena cava
d. connects the umbilical artery to the inferior vena cava Correct Ans-c. Connects the
umbilical vein to the inferior vena cava
The ductus venosus connects the umbilical vein to the inferior vena cava. The foramen ovale
is a temporary opening between the right and left atria. The ductus arteriosus joins the aorta
and the pulmonary artery.
Leifer page 39-40
During a prenatal visit, the nurse checks the fetal heart rate (FHR) of a client in the third
trimester of pregnancy. The nurse determines that the FHR is normal if which of the following
HR is noted?
a. 80
b. 100
, Maternity Nclex- Questions and Answers
c. 150
d. 180 Correct Ans-c. 150
110-170
FHR depends on gestational age. is is normally 160-170 beats per minute during the first
trimester, but it slows with fetal growth to 110-120 (low end) to 160 (high end) beats per
minute near or at term.
The nurse is teaching a pregnant woman about the physiological effects and hormone
changes that occur during pregnancy. The woman asks the nurse about the purpose of
estrogen. The nurse bases the response on which of the following purposes of estrogen?
It maintains the uterine lining for implantation
b. It stimulates the metabolism of glucose and coverts glucose to fat
c. It prevents the involution of the corpus luteum, and maintains the production of
progesterone until the placenta is formed
d. it stimulates uterine development to provide an environment for the fetus, and stimulates
the breasts to prepare for lactation Correct Ans-d. it stimulates uterine developent to
provide an environment for the fetus, and stimulates the breasts to prepare for lactation
Estrogen stimulates uterine development to provide an environment for the fetus, and it
stimulates the breasts to prepare for lactation.
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