A nurse is explaining the purpose of a Contraction Stress Test (CST) to a pregnant client.

What does the CST aim to assess?

Fetal well-being.

Maternal blood pressure.

Placental function.

Amniotic fluid volume.

Answer and Explanation

The Correct Answer is A

A contraction stress test (CST) is performed near the end of pregnancy to determine how well the fetus will cope with the contractions of childbirth.

The aim is to induce contractions and monitor the fetus to check for heart rate abnormalities using a cardiotocograph.

A normal heartbeat is a good sign that the fetus will be healthy during labor.

Choice B is wrong because a CST does not measure maternal blood pressure.

Choice C is wrong because a CST does not assess placental function directly.

Choice D is wrong because a CST does not measure amniotic fluid volume.

Normal ranges for fetal heart rate are between 110 and 160 beats per minute.

Normal ranges for uterine contractions are between 2 and 5 contractions in 10 minutes, lasting less than 90 seconds each.

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Correct Answer is A

Explanation

An NST is a test that measures the fetal heart rate in response to fetal movement.

It is a non-invasive and simple way to assess fetal well-being.

An NST may be recommended to further evaluate fetal well-being if the CST result is equivocal, meaning that occasional but not persistent late decelerations are present.

Choice B. Amniocentesis is wrong because it is an invasive procedure that involves inserting a needle into the uterus to collect amniotic fluid for genetic testing or fetal lung maturity.

It is not used to evaluate fetal well-being in response to contractions.

Choice C. Magnetic resonance imaging (MRI) is wrong because it is an imaging technique that uses magnetic fields to create detailed pictures of the fetus and the placenta.

It is not used to evaluate fetal well-being in response to contractions.

Choice D. Chorionic villus sampling (CVS) is wrong because it is an invasive procedure that involves inserting a catheter or a needle into the placenta to collect chorionic villi for genetic testing.

It is not used to evaluate fetal well-being in response to contractions.

Normal ranges for CST are negative (normal) or positive (abnormal).

Equivocal and unsatisfactory are special categories of test outcomes that require further testing.

Normal ranges for NST are reactive (reassuring) ornon-reactive (non-reassuring).

A. 0 or. B. 0 or. C. 1 or. D. 1 or.

Correct Answer is B

Explanation

Each of the five variables in a biophysical profile (BPP) is assigned a score of either 0 or 2 points, depending on whether it meets the criteria or not.

The five variables are:

Fetal breathing: 2 points if there is at least one episode of rhythmic breathing lasting at least 30 seconds within 30 minutes, 0 points otherwise.

Fetal movement: 2 points if there are at least three discrete body or limb movements within 30 minutes, 0 points otherwise.

Fetal tone: 2 points if there is at least one episode of extremity extension and subsequent return to flexion, 0 points otherwise.

Amniotic fluid volume: 2 points if there is a pocket of amniotic fluid measuring at least 2 cm in two perpendicular planes, 0 points otherwise.

Nonstress test: 2 points if there are at least two accelerations of fetal heart rate with or without fetal movement within 20 minutes, 0 points otherwise.

Choice A is wrong because each variable can have a score of either 0 or 2, not 0 or.

Choice C is wrong because there is no score of 1 for any variable.

Choice D is wrong because it is incomplete and does not provide the full range of possible scores.

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A nurse is explaining the purpose of a Contraction Stress Test (CST) to a pregnant client. What does the CST aim to assess?

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Naxlex Comprehensive Predictor Exams

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

Correct Answer is A

Explanation

A nurse is interpreting the results of a biophysical profile (BPP) for a client who is at 34 weeks of gestation. The nurse should understand that each of the five variables is assigned a score of how many points?

Correct Answer is B

Explanation

A nurse is reviewing the contraindications for a Contraction Stress Test (CST) with a pregnant client. Which condition would be a contraindication for the test?

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?

A nurse is teaching about fetal development to a group of clients in the antenatal clinic. Which of the following statements should the nurse include in the teaching?

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 asks the nurse about the risks and complications associated with prenatal ultrasound. Which of the following responses by the nurse is accurate?

A nurse is educating a pregnant client about the Alpha-fetoprotein Test (AFP). What should the nurse include as a reason why AFP results are reported as multiples of the median (MoM)?

A nurse is explaining the purpose of an Alpha-fetoprotein Test (AFP) to a pregnant client. What is the test primarily used for ?

A nurse is caring for a patient who had an amniocentesis performed at 16 weeks gestation and reports cramping and vaginal bleeding 24 hours later which action should be taken first?

A nurse is explaining the purpose of a Contraction Stress Test (CST) to a pregnant client.

What does the CST aim to assess?