©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
NU 122 - Unit Four Quiz Exam Questions
With Correct Answers
Which tests can detect chromosomal abnormalities? - answer✔Alpha-fetoprotein (AFP)
screening, multiple-marker creeping, Chorionic villus sampling (CVS), and amniocentesis
Purpose of prenatal testing - answer✔Detect congenital anomalies, to evaluate the condition of
the fetus for high risk pregnancies, and to allow appropriate intervention and baseline
information such as accurate gestational age.
Maternal medical conditions that indicate need for fetal diagnostic procedures -
answer✔Preexisting diabetes mellitus or gestational diabetes, hypertension (chronic or
preeclampsia), acute or non acute infections, STDs, severe anemia, parents carry or express a
genetic disorder
Maternal demographic factors that indicate need for fetal diagnostic procedures -
answer✔Maternal age is less than 16 or greater than 35, poverty, non-white, inadequate
prenatal care
Obstetric factors that indicate need for fetal diagnostic procedures - answer✔History of low
birth weight, history of preterm labor, multifetal pregnancy, malpresentation, previous fetal
loss, previous birth of infant with congenital anomaly, previous infant LGA, hydramnios,
oligohydramnios, decrease or absence of fetal movements, uncertainty about gestational age,
suspected intrauterine growth restriction, discordant fetal growth of twins, postmaturity,
preterm labor, grand multiparty
Concurrent maternal factors indicating need for fetal diagnostic procedures -
answer✔Prepregnancy BMI less than 18.5 kg, prepregnancy BMI 25kg+, inadequate weight gain
or poor pattern of weight gain, excessive weight gain, use of drugs, alcohol, or tobacco
How is gestational age measured via ultrasound during the first trimester? -
answer✔Measuring the crown-rump length of the embryo
How is gestational age measured via ultrasound during the second trimester? -
answer✔Measuring the biparietal diameter, femur length, and abdominal circumference
1|Page
, ©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
What is the purpose of a transvaginal ultrasound? - answer✔Determine multifetal pregnancy,
bicornate uterus, presence and location of pregnancy, and presence of ovarian cysts
AFP assessment is performed on maternal serum or amniotic fluid to identify - answer✔Open
body wall defects or chromosomal anomalies
What are the three other markers that are often assessed with AFP? - answer✔Human
chorionic gonadotropin, estriol, inhibin A
If abnormalities are noted through the maternal serum AFP (MSAFP), what does this mean? -
answer✔Identifies the woman as being a candidate for further, more invasive testing
What is the purpose of Chorionic Villus Sampling (CVS)? - answer✔Provides information about
numbers chromosomal defects or metabolic abnormalities
What is the benefit of using Chorionic Villus Sampling (CVS) vs. Amniocentesis? - answer✔CVS
can be performed at early as 10 weeks of gestation
Indications for second trimester amniocentesis - answer✔Maternal age 35+ years
Chromosomal abnormality in close family member
Sex determination for maternal carrier of X-linked disorder
Birth of previous infant with chromosomal abnormalities, neural tube defect, or body wall
defect
Pregnancy after multiple spontaneous abortions
Elevated levels of maternal serum AFP that remain unexplained
Maternal Rh sensitization
What is the purpose of an amniocentesis performed beyond the second trimester? -
answer✔Determine fetal lung maturity, so that doctors can prepare better if the think the mom
needs to deliver early
What is the purpose of Percutaneous Umbilical Blood Sampling? - answer✔To detect blood
disorders, acid-base imbalance, infection, or fetal genetic disease (Karyotyping)
What does Percutaneous Umbilical Blood Sampling involve? - answer✔The aspiration of fetal
blood from the umbilical cord near the placenta for prenatal diagnosis or therapy
What is a reactive NST? - answer✔2 FHR accelerations of 15 beats or more from baseline lasting
for at least 15 seconds in a 20 minute time frame (this is a reassuring sign)
2|Page
11/16/2024 10:16 AM
NU 122 - Unit Four Quiz Exam Questions
With Correct Answers
Which tests can detect chromosomal abnormalities? - answer✔Alpha-fetoprotein (AFP)
screening, multiple-marker creeping, Chorionic villus sampling (CVS), and amniocentesis
Purpose of prenatal testing - answer✔Detect congenital anomalies, to evaluate the condition of
the fetus for high risk pregnancies, and to allow appropriate intervention and baseline
information such as accurate gestational age.
Maternal medical conditions that indicate need for fetal diagnostic procedures -
answer✔Preexisting diabetes mellitus or gestational diabetes, hypertension (chronic or
preeclampsia), acute or non acute infections, STDs, severe anemia, parents carry or express a
genetic disorder
Maternal demographic factors that indicate need for fetal diagnostic procedures -
answer✔Maternal age is less than 16 or greater than 35, poverty, non-white, inadequate
prenatal care
Obstetric factors that indicate need for fetal diagnostic procedures - answer✔History of low
birth weight, history of preterm labor, multifetal pregnancy, malpresentation, previous fetal
loss, previous birth of infant with congenital anomaly, previous infant LGA, hydramnios,
oligohydramnios, decrease or absence of fetal movements, uncertainty about gestational age,
suspected intrauterine growth restriction, discordant fetal growth of twins, postmaturity,
preterm labor, grand multiparty
Concurrent maternal factors indicating need for fetal diagnostic procedures -
answer✔Prepregnancy BMI less than 18.5 kg, prepregnancy BMI 25kg+, inadequate weight gain
or poor pattern of weight gain, excessive weight gain, use of drugs, alcohol, or tobacco
How is gestational age measured via ultrasound during the first trimester? -
answer✔Measuring the crown-rump length of the embryo
How is gestational age measured via ultrasound during the second trimester? -
answer✔Measuring the biparietal diameter, femur length, and abdominal circumference
1|Page
, ©BRIGHTSTARS EXAM SOLUTIONS
11/16/2024 10:16 AM
What is the purpose of a transvaginal ultrasound? - answer✔Determine multifetal pregnancy,
bicornate uterus, presence and location of pregnancy, and presence of ovarian cysts
AFP assessment is performed on maternal serum or amniotic fluid to identify - answer✔Open
body wall defects or chromosomal anomalies
What are the three other markers that are often assessed with AFP? - answer✔Human
chorionic gonadotropin, estriol, inhibin A
If abnormalities are noted through the maternal serum AFP (MSAFP), what does this mean? -
answer✔Identifies the woman as being a candidate for further, more invasive testing
What is the purpose of Chorionic Villus Sampling (CVS)? - answer✔Provides information about
numbers chromosomal defects or metabolic abnormalities
What is the benefit of using Chorionic Villus Sampling (CVS) vs. Amniocentesis? - answer✔CVS
can be performed at early as 10 weeks of gestation
Indications for second trimester amniocentesis - answer✔Maternal age 35+ years
Chromosomal abnormality in close family member
Sex determination for maternal carrier of X-linked disorder
Birth of previous infant with chromosomal abnormalities, neural tube defect, or body wall
defect
Pregnancy after multiple spontaneous abortions
Elevated levels of maternal serum AFP that remain unexplained
Maternal Rh sensitization
What is the purpose of an amniocentesis performed beyond the second trimester? -
answer✔Determine fetal lung maturity, so that doctors can prepare better if the think the mom
needs to deliver early
What is the purpose of Percutaneous Umbilical Blood Sampling? - answer✔To detect blood
disorders, acid-base imbalance, infection, or fetal genetic disease (Karyotyping)
What does Percutaneous Umbilical Blood Sampling involve? - answer✔The aspiration of fetal
blood from the umbilical cord near the placenta for prenatal diagnosis or therapy
What is a reactive NST? - answer✔2 FHR accelerations of 15 beats or more from baseline lasting
for at least 15 seconds in a 20 minute time frame (this is a reassuring sign)
2|Page
