During a Non-Stress Test (NST), the client needs to press a button whenever they feel the fetus move.

What is the purpose of this action?

To measure the fetal heart rate (FHR) in response to fetal movements.

To monitor the uterine contractions.

To indicate adequate fetal oxygenation and normal fetal neurological function.

To assess fetal well-being and identify fetal hypoxia or distress.

Answer and Explanation

The Correct Answer is A

To measure the fetal heart rate (FHR) in response to fetal movements.

This is because the FHR should increase by at least 15 beats per minute for at least 15 seconds when the fetus moves, which indicates a healthy and reactive fetus.

This is called an acceleration.

Choice B is wrong because the uterine contractions are not related to the fetal movements or the button pressing.

The uterine contractions are measured by a tocodynamometer or an intrauterine pressure catheter.

Choice C is wrong because the fetal oxygenation and neurological function are not directly measured by the button pressing.

The fetal oxygenation can be assessed by the FHR variability and decelerations, while the neurological function can be evaluated by other tests such as biophysical profile or fetal acoustic stimulation.

Choice D is wrong because the fetal well-being and hypoxia or distress are not indicated by the button pressing alone.

The fetal well-being and hypoxia or distress are determined by the FHR patterns, such as baseline, variability, accelerations and decelerations.

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Correct Answer is B

Explanation

This test can detect genetic disorders.

Chorionic villus sampling (CVS) is a prenatal test that involves taking a sample of tissue from the placenta to test for chromosomal abnormalities and certain other genetic problems.

The placenta is a structure in the uterus that provides blood and nutrients from the mother to the fetus.

Choice A is wrong because CVS does not provide information on neural tube defects, such as spina bifida.

For this reason, women who undergo CVS also need a follow-up blood test between 16 to 18 weeks of their pregnancy to screen for neural tube defects.

Choice C is wrong because CVS can detect chromosomal abnormalities, but not all chromosomal abnormalities are genetic disorders.

For example, Down syndrome is a chromosomal abnormality caused by an extra copy of chromosome 21, but it is not inherited from the parents.

Choice D is wrong because CVS cannot detect Rh sensitization, which is a condition where the mother’s immune system produces antibodies against the fetus’s blood type.

Rh sensitization can be detected by a blood test that measures the level of antibodies in the mother’s blood.

A. "NST is performed after 28 weeks of gestation or earlier if there are risk factors.". B. "A nonreactive NST means that the fetal heart rate increases by at least 15 beats per minute for at least 15 seconds twice or more in a 20-minute period.". C. . "NST requires placing two belts with sensors on my abdomen: one to monitor the fetal heart rate and one to monitor the uterine contractions.". D. "A reactive NST may indicate fetal hypoxia, distress, sleep, medication effect, or neurological abnormality.".

Correct Answer is A

Explanation

"NST is performed after 28 weeks of gestation or earlier if there are risk factors."12 This statement indicates that the client understands when and why an NST is done.

Choice B is wrong because it describes a reactive NST, not a nonreactive one.

A reactive NST means that the fetal heart rate increases by at least 15 beats per minute for at least 15 seconds twice or more in a 20-minute period.2

Choice C is wrong because it confuses NST with contraction stress test (CST), which requires monitoring uterine contractions.

NST does not involve contractions.2

Choice D is wrong because it describes possible causes of a nonreactive NST, not a reactive one.

A nonreactive NST may indicate fetal hypoxia, distress, sleep, medication effect, or neurological abnormality.2

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During a Non-Stress Test (NST), the client needs to press a button whenever they feel the fetus move. What is the purpose of this action?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is providing education to a client who is scheduled to undergo chorionic villus sampling (CVS). Which statement by the client indicates an understanding of this test?

Correct Answer is B

Explanation

A nurse is educating a pregnant client about the Non-Stress Test (NST). Which statement by the client indicates understanding of the test?

Correct Answer is A

Explanation

A nurse is caring for a client who had an amniocentesis at 16 weeks gestation and reports cramping and vaginal bleeding 24 hours later. Which of the following actions should the nurse take first?

A nurse is reviewing the results of a Contraction Stress Test (CST) with a pregnant client. What does an equivocal CST indicate?

A nurse is caring for a client who is scheduled for a maternal serum alpha-fetoprotein test at 15 weeks of gestation. The nurse provides which of the following explanations about this test to the client?

During a CST, the nurse observes variable decelerations of the FHR with or without contractions. What does this finding indicate?

A client's CST result is interpreted as equivocal. What additional diagnostic test may be recommended to further evaluate fetal well-being?

During a Non-Stress Test (NST), the client needs to press a button whenever they feel the fetus move. What is the purpose of this action?

A client is scheduled for an abdominal ultrasound in two weeks. The client asks the nurse what they should do to prepare for the test. What is the best response by the nurse?

A nurse is discussing the factors that can affect Alpha-fetoprotein Test (AFP) results with a pregnant client. Which factor should the nurse mention?

During a Non-Stress Test (NST), the client needs to press a button whenever they feel the fetus move.

What is the purpose of this action?