A nurse is comparing nonstress test (NST) and contraction stress test (CST) for assessing fetal well-being.

What is an advantage of NST over CST?

NST provides more information about fetal status than CST

NST is less time-consuming and more comfortable than CST

NST has fewer contraindications and complications than CST

NST has higher sensitivity and specificity than CST

Answer and Explanation

The Correct Answer is B

NST is less time-consuming and more comfortable than CST. This is because NST does not require any external stimulation of the uterus, while CST involves giving oxytocin to induce contractions. NST also does not pose any risk of preterm labor or fetal distress, which are possible complications of CST.

Choice A is wrong because NST does not provide more information about fetal status than CST. In fact, CST can detect fetal hypoxia more accurately than NST.

Choice C is wrong because NST does not have fewer contraindications than CST. Both tests have similar contraindications, such as placenta previa, multiple gestation, and previous cesarean section.

Choice D is wrong because NST does not have higher sensitivity and specificity than CST.

Sensitivity refers to the ability of a test to correctly identify positive cases, while specificity refers to the ability of a test to correctly identify negative cases.

NST has a high sensitivity but a low specificity, meaning it can detect most fetuses with hypoxia but also has many false positives. CST has a low sensitivity but a high specificity, meaning it can miss some fetuses with hypoxia but also has few false negatives.

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Correct Answer is B

Explanation

The client should count the baby’s kicks every day to monitor fetal well-being.A nonreactive nonstress test (NST) indicates that the fetal heart rate did not increase adequately with fetal movement, which may suggest fetal hypoxia or distress.A biophysical profile (BPP) is a combination of NST and ultrasound that assesses five parameters: fetal breathing, movement, tone, amniotic fluid volume, and NST.

Each parameter is scored 0 or 2, and the total score ranges from 0 to 10.A score of 8/10 or 10/10 is considered normal, while a score of 6/10 is equivocal and ≤ 4/10 is abnormal.A BPP score of 8/10 with a nonreactive NST means that the fetus has normal biophysical activities but may have chronic hypoxia.

Choice A is wrong because the client does not need to have another BPP in a week unless there are other indications of fetal compromise.The BPP may be repeated once or twice a week depending on the clinical situation.

Choice C is wrong because the client does not need to have an amniocentesis as soon as possible.

Amniocentesis is an invasive procedure that involves inserting a needle into the uterus to obtain amniotic fluid for analysis.It is usually done for prenatal diagnosis of genetic disorders or fetal lung maturity, not for fetal well-being.

Choice D is wrong because the client does not need to deliver the baby by cesarean section.Cesarean section is a surgical delivery that may be indicated for various maternal or fetal conditions, such as placenta previa, breech presentation, fetal distress, or failure to progress in labor.A BPP score of 8/10 with a nonreactive NST does not warrant a cesarean section unless there are other risk factors or complications.

A. Category I. B. Category II. C. Category III. D. Category IV.

Correct Answer is C

Explanation

Category III.This category of FHR tracing represents an abnormal pattern that is predictive of fetal acidemia and requires prompt evaluation and intervention.A category III pattern is defined by any of the following criteria:

• Absent baseline FHR variability and any of the following:

➤ Recurrent late decelerations

➤ Recurrent variable decelerations

➤ Bradycardia

• Sinusoidal pattern

Choice A is wrong because category I is a normal pattern that is predictive of normal fetal acid-base balance at the time of observation.A category I pattern is defined by all of the following criteria:

• Baseline rate of 110 to 160 bpm

• Moderate baseline FHR variability

• No late or variable decelerations

• Early decelerations may be present or absent

• Accelerations may be present or absent

Choice B is wrong because category II is an indeterminate pattern that is not predictive of abnormal fetal acid-base balance but requires continued surveillance and reevaluation.A category II pattern includes all FHR tracings that are not category I or III.

Choice D is wrong because there is no category IV in the NICHD classification system for FHR tracings.

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A nurse is comparing nonstress test (NST) and contraction stress test (CST) for assessing fetal well-being. What is an advantage of NST over CST?

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Naxlex Comprehensive Predictor Exams

A nurse is providing discharge instructions to a client who had a nonreactive nonstress test (NST) followed by a biophysical profile (BPP) with a score of 8/10. Which of the following statements by the client indicates an understanding of the teaching?

Correct Answer is B

Explanation

A nurse is assessing a fetal heart rate (FHR) tracing for a client who is in active labor. The nurse notes that the baseline FHR is 150 bpm with absent variability and recurrent variable decelerations with slow return to baseline. What category of FHR tracing does this represent?

Correct Answer is C

Explanation

A nurse is reviewing the findings of a biophysical profile (BPP) for a client who is at 40 weeks of gestation. The BPP score is 6 out of 10 points. Which of the following components are included in this score? (Select all that apply.)

A nurse is caring for a client who is pregnant and undergoing a contraction stress test (CST). The nurse observes three uterine contractions in 10 minutes, with no late or significant variable decelerations of the fetal heart rate (FHR). How should the nurse interpret this finding?

(Select all that apply) A nurse is performing a nonstress test (NST) for a client who is at 32 weeks of gestation and has gestational diabetes mellitus. The nurse uses vibroacoustic stimulation to elicit fetal movement and acceleration of FHR. What are the indications for using this method?

A nurse is using vibroacoustic stimulation (VAS) to stimulate fetal movement during a nonstress test (NST). What action should the nurse take when applying VAS?

A nurse is interpreting the results of a contraction stress test (CST) for a client who is at 38 weeks of gestation. The nurse notes that there are no late or significant variable decelerations of the fetal heart rate (FHR). How should the nurse document this finding?

A nurse is comparing nonstress test (NST) and contraction stress test (CST) for assessing fetal well-being. What is an advantage of NST over CST?

A nurse is comparing nonstress test (NST) and contraction stress test (CST) for assessing fetal well-being.

What is an advantage of NST over CST?