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?

“This test can detect neural tube defects.”.

“This test can detect genetic disorders.”.

“This test can detect chromosomal abnormalities.”.

“This test can detect Rh sensitization.”.

Answer and Explanation

The Correct Answer is B

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.

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Correct Answer is C

Explanation

The patient should wear loose-fitting clothing and lie supine on an examination table.

This is because loose-fitting clothing allows easy access to the abdomen and lying supine helps relax the abdominal muscles.

The patient should also avoid food and drinks for 8 to 12 hours before the test, as undigested food can interfere with the sound waves and affect the image quality.

Choice A is wrong because a full bladder is not necessary for an abdominal ultrasound, unless the patient is pregnant or has a pelvic condition.

A transvaginal ultrasound is a different type of ultrasound that uses a probe inserted into the vagina to examine the reproductive organs.

Choice B is wrong because tight-fitting clothing can restrict the movement of the ultrasound probe and make it harder to get a clear image.

Lying prone (on the stomach) can also tense up the abdominal muscles and obscure the organs.

Choice D is wrong because lying prone can have the same disadvantages as choice B. Additionally, wearing loose-fitting clothing does not mean that the patient can eat or drink anything before the test, as this can affect the results.

A. 0 points. B. 1 point. C. 2 points. D. 3 points.

Correct Answer is C

Explanation

According to the ACOG guidelines on antepartum fetal surveillance, one of the components of the biophysical profile is fetal breathing movements, which are scored as 2 points if there is one or more episodes of rhythmic fetal breathing movements of 30 seconds or more within 30 minutes.

Choice A is wrong because 0 points are given for absent or no breathing episode for ≥30 seconds within a 30 minute observation period.

Choice B is wrong because there is no 1 point score for this variable.

Choice D is wrong because there is no 3 point score for this variable.

The maximum score for each variable is 2 points.

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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?

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Naxlex Comprehensive Predictor Exams

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?

Correct Answer is C

Explanation

A nurse is observing fetal breathing movements on an ultrasound for a client who is undergoing a biophysical profile (BPP). The nurse should document how many points for this variable if the fetus has at least one episode of breathing lasting for 20 seconds within a 30-minute period?

Correct Answer is C

Explanation

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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?