Deck 15: Prenatal Diagnostic Tests

Question 1

When is the best time to determine gestational age based on biparietal diameter through ultrasound?

A) First trimester only
B) Second trimester only
C) Any time
D) Second half of pregnancy

Answer 1

Second half of pregnancy

Question 2

What is the purpose of amniocentesis for the patient hospitalized at 34 weeks with pregnancy-induced hypertension?

A) Identification of abnormal fetal cells
B) Detection of metabolic disorders
C) Determination of fetal lung maturity
D) Identification of sex of the fetus

Answer 2

Determination of fetal lung maturity

Question 3

The nurse providing care for the pregnant woman understands that a factor indicating the need for fetal diagnostic procedures is

A) maternal diabetes.
B) maternal age older than 30 years.
C) previous infant more than 3000 g at birth.
D) weight gain of 25 pounds.

Answer 3

maternal diabetes.

Question 4

While working with the pregnant woman in her first trimester,the nurse is aware that chorionic villus sampling (CVS)can be performed during pregnancy as early as _____ weeks.

A) 4
B) 8
C) 10
D) 12

Question 5

A nurse is preparing a woman for a nonstress test (NST).What nursing action is most appropriate?

A) Position the woman on her left side.
B) Seat the woman comfortably in a recliner.
C) Have the woman to drink 1 liter of water prior to the test.
D) Place conduction gel on the obese woman's abdomen.

Question 6

A nurse is teaching a woman how to do "kick counts." What information about this assessment is most appropriate?

A) Notify your provider if the baby's movement patterns change.
B) Count the number of fetal movements over 2 hours.
C) Call the OB triage area if there are fewer than 10 movements/hour.
D) Have your partner verify your count at the same time you perform it.

Question 7

The nurse teaches a student that indications for percutaneous umbilical cord sampling (PUBS)include which of the following? (Select all that apply.)

A) Rh disease
B) Fetal well-being
C) Infection
D) Lung maturity
E) Karyotyping

Question 8

Which statement regarding various biochemical assessments used during pregnancy is correct?

A) Chorionic villus sampling (CVS) is becoming more popular because it provides early diagnosis.
B) Screening for maternal serum alpha-fetoprotein (MSAFP) levels is recommended between 10 and 12 weeks of gestation in order to give parents time to consider options.
C) Percutaneous umbilical blood sampling (PUBS) is one of the multiple marker screen tests for Down syndrome.
D) MSAFP is a screening tool only; it identifies candidates for more definitive procedures.

Question 9

A woman is scheduled for an ultrasound and is asking the nurse questions about this test.Which statement by the nurse regarding ultrasonography during pregnancy is most accurate?

A) Ultrasonography uses infrared technology to create an image.
B) Ultrasonography is only utilized as an adjunct to more invasive tests.
C) Ultrasonography is not harmful to the fetus.
D) Ultrasonography is not a component of biophysical profile testing.

Question 10

Which analysis of maternal serum may predict chromosomal abnormalities in the fetus?

A) Multiple-marker screening
B) Lecithin/sphingomyelin (L/S) ratio
C) Biophysical profile
D) Type and crossmatch of maternal and fetal serum

Question 11

A patient is at 6 weeks' gestation and is having a transvaginal ultrasound.While preparing the patient for this procedure,she expresses concerns over the necessity for this test.The nurse explains that this diagnostic test may be necessary to determine which of the following? (Select all that apply.)

A) Multifetal gestation
B) Bicornuate uterus
C) Presence and location of pregnancy (intrauterine or elsewhere)
D) Amniotic fluid volume
E) Presence of ovarian cysts

Question 12

The nurse teaches a pregnant woman that which diagnostic test evaluates the effect of fetal movement on fetal heart activity?

A) Contraction stress test (CST)
B) Sonography
C) Biophysical profile
D) Nonstress test (NST)

Question 13

An NST in which two or more fetal heart rate (FHR)accelerations of 15 beats per minute (bpm)or more occur with fetal movement in a 20-minute period is termed

A) nonreactive.
B) positive.
C) negative.
D) reactive.

Question 14

The nurse's role in diagnostic testing is to provide

A) advice to the couple.
B) assistance with decision making.
C) information about the tests.
D) reassurance about fetal safety.

Question 15

The major advantage of chorionic villus sampling (CVS)over amniocentesis is that it

A) is not an invasive procedure.
B) does not require hospitalization.
C) has less risk of spontaneous abortion.
D) is performed earlier in pregnancy.

Question 16

The primary reason for evaluating alpha-fetoprotein (AFP)levels in maternal serum is to determine if the fetus has

A) hemophilia.
B) a neural tube defect.
C) sickle cell anemia.
D) a normal lecithin/sphingomyelin (L/S) ratio.

Question 17

A pregnant woman's biophysical profile score is 8.She asks the nurse to explain the results.The nurse's best response is

A) "The test results are within normal limits."
B) "Immediate delivery by cesarean birth is needed."
C) "Further tests are needed to determine the meaning of this score."
D) "We will inform you of your options within the next week."

Question 18

A pregnant woman states "This test isn't my idea,but my husband insists." Which response by the nurse is most appropriate?

A) "Don't worry. Everything will be fine."
B) "Why don't you want to have this test?"
C) "You're concerned about having this test?"
D) "It's your decision."

Question 19

Which nursing intervention is necessary before a second trimester transabdominal ultrasound?

A) Place the woman NPO for 12 hours.
B) Instruct the woman to drink 1 to 2 quarts of water.
C) Administer a soapsuds enema.
D) Perform an abdominal prep.

Question 20

The purpose of initiating contractions in a CST is to

A) determine the degree of fetal activity.
B) apply a stressful stimulus to the fetus.
C) identifying fetal acceleration patterns.
D) increase placental blood flow.

Question 21

A pregnant woman has the following assessments determined from a biophysical profile: reactive nonstress test,3 fetal breathing movements within 30 minutes,1 trunk movement in 30 minutes,opened and closed hand twice in 30 minutes,largest amniotic pocket of 1 cm.Calculate this woman's score.
This woman's score is _____.