A nurse is caring for a client scheduled for a CST.

Which statement indicates the client understands the test procedure?

"I will have sensors placed on my abdomen to monitor the FHR and uterine contractions.".

"I will need to fast for 24 hours before the test.".

"I will be sedated during the test to prevent discomfort.".

"I will need to drink plenty of fluids before the test.".

Answer and Explanation

The Correct Answer is A

“I will have sensors placed on my abdomen to monitor the FHR and uterine contractions.” This statement indicates the client understands the test procedure of a CST, which is a test that triggers contractions and registers how the baby’s heart reacts.

The test is done by placing two sensor belts around the abdomen, one to measure the baby’s heartbeat and the other to measure contractions.

The client may receive oxytocin through an IV to induce contractions.

Choice B is wrong because the client does not need to fast for 24 hours before the test.

There is no evidence that fasting is required for a CST.

Choice C is wrong because the client will not be sedated during the test.

Sedation is not necessary for a CST and may interfere with the results.

Choice D is wrong because the client does not need to drink plenty of fluids before the test.

There is no evidence that drinking fluids is required for a CST.

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Correct Answer is B

Explanation

A low level of AFP (<0.5 MoM) in a pregnant woman can indicate that the fetus has a chromosomal abnormality, such as Down syndrome or Edwards syndrome.

This is because these conditions affect the development of the fetal liver, which produces AFP.

Choice A is wrong because neural tube defects, such as spina bifida, are associated with high levels of AFP (>2.5 MoM) in the maternal blood.

This is because AFP can leak from the open spinal canal of the fetus into the amniotic fluid and then into the maternal blood.

Choice C is wrong because maternal weight-related factors do not affect the level of AFP in the maternal blood.

However, they can affect the interpretation of the AFP test results, as the test needs to be adjusted for maternal weight, age, ethnicity, and gestational age.

Choice D is wrong because fetal demise (death) can also cause high levels of AFP in the maternal blood, as the AFP from the dead fetus can leak into the amniotic fluid and then into the maternal blood.

Normal ranges of AFP in pregnant women vary depending on the gestational age and the method of measurement.

Generally, normal levels of AFP are below 10 ng/ml in nonpregnant adults and below 2.5 MoM in pregnant women.

A. To compare the measured level of AFP to the expected level for a given gestational age. B. To differentiate between neural tube defects and chromosomal abnormalities. C. To assess the risk of fetal demise or multiple gestation. D. To account for factors such as maternal weight and race.

Correct Answer is A

Explanation

This is because AFP levels vary according to the gestational age of the fetus, and reporting them as multiples of the median (MoM) allows for a standardized comparison.

Choice B is wrong because AFP results do not differentiate between neural tube defects and chromosomal abnormalities.

They only indicate an increased risk for these conditions, which need further testing to confirm.

Choice C is wrong because AFP results do not assess the risk of fetal demise or multiple gestation.

They only measure the amount of AFP in the maternal blood, which can be affected by various factors such as maternal weight, race, diabetes, and fetal anomalies.

Choice D is wrong because AFP results are reported as MoM regardless of factors such as maternal weight and race.

These factors are taken into account when calculating the MoM value, which adjusts for the expected variation in AFP levels among different populations.

Normal ranges for AFP MoM vary depending on the laboratory and the method used, but generally they are between 0.5 and 2.52.

Values above or below this range may indicate an increased risk for certain fetal conditions or complications.

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A nurse is caring for a client scheduled for a CST. Which statement indicates the client understands the test procedure?

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Naxlex Comprehensive Predictor Exams

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Correct Answer is A

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A nurse is caring for a client scheduled for a CST.

Which statement indicates the client understands the test procedure?