A nurse is educating a client about a contraction stress test.

Which of the following is correct regarding the contraction stress test?

We are looking for a negative result.

We are looking for three contractions in a 10-minute period with moderate variability and no decelerations.

A negative result indicates fetal well-being.

A positive result indicates fetal growth restriction, lower Apgar scores, and need for cesarean delivery.

Answer and Explanation

The Correct Answer is C

Choice A rationale
While a negative result in a Contraction Stress Test (CST) is desirable, this choice does not fully explain the significance of the result. A negative CST indicates that there are no late decelerations in the fetal heart rate in response to uterine contractions, suggesting that the fetus can handle the stress of labor.
Choice B rationale
This choice describes the criteria for a reactive Nonstress Test (NST), not a Contraction Stress Test (CST). In a CST, the focus is on the fetal heart rate response to contractions, not the number of contractions or variability.
Choice C rationale
A negative result in a CST indicates fetal well-being, meaning that the fetus can tolerate the stress of uterine contractions without showing signs of distress, such as late decelerations in the heart rate. This result suggests that the fetus is likely to handle labor well.
Choice D rationale
A positive result in a CST indicates that the fetus has late decelerations in response to contractions, which can be a sign of fetal distress. This result may suggest fetal growth restriction, lower Apgar scores, and the potential need for cesarean delivery. However, this choice does not fully capture the significance of a positive CST result.

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Correct Answer is A

Explanation

Choice A rationale
This statement is incorrect. Vagus nerve stimulation actually decreases FHR variability. The vagus nerve, part of the parasympathetic nervous system, slows the heart rate and reduces variability.
Choice B rationale
This statement is correct. Baroreceptors are sensors located in blood vessels that help regulate blood pressure by detecting changes in the stretch of the vessel walls. They play a crucial role in maintaining stable blood pressure levels.
Choice C rationale
This statement is correct. The autonomic nervous system, which includes the sympathetic and parasympathetic nervous systems, controls the fetal heart rate. It regulates the balance between heart rate acceleration and deceleration.
Choice D rationale
This statement is correct. Chemoreceptors respond to changes in blood gas levels, such as oxygen and carbon dioxide. They help regulate respiratory and cardiovascular responses to maintain homeostasis.

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

Correct Answer is B

Explanation

Choice A rationale
Category I tracings are normal and indicate no fetal hypoxia or acidemia. They include a baseline heart rate of 110-160 bpm, moderate variability, and no late or variable decelerations.
Choice B rationale
Category II tracings are indeterminate and include any of the following: baseline heart rate changes, minimal or marked variability, absence of accelerations, or periodic decelerations. A baseline heart rate of 175 bpm with moderate variability and absent accelerations fits this category.
Choice C rationale
Category III tracings are abnormal and indicate possible fetal hypoxia or acidemia. They include absent variability with recurrent late or variable decelerations, bradycardia, or a sinusoidal pattern.
Choice D rationale
Category IV is not a standard classification in fetal heart rate monitoring. The correct categories are I, II, and III6.

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A nurse is educating a client about a contraction stress test. Which of the following is correct regarding the contraction stress test?

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Naxlex Comprehensive Predictor Exams

The nurse preceptor is teaching about the physiology of the fetal heart rate (FHR) pattern. Which statement by the student indicates a lack of understanding?

Correct Answer is A

Explanation

The labor and delivery nurse is caring for a client in active labor. The nurse notes the fetal heart rate baseline is 175 bpm, moderate variability. Accelerations are absent and no decelerations noted. How should the nurse describe this tracing to the medical provider?

Correct Answer is B

Explanation

The labor and delivery nurse tells her client she has completed stage 1 of labor. Which of the following statements by the student nurse indicates confusion about the stages of labor?

When interpreting a fetal monitoring tracing, which of the following findings would require the nurse to intervene?

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The labor and delivery nurse is caring for a client in active labor. The nurse notes the fetal heart rate baseline is 175 bpm, moderate variability, accelerations are absent and no decelerations noted. How should the nurse describe this tracing to the medical provider?

The nurse is caring for a client immediately after epidural. Which of the following findings should the nurse report to the anesthesia provider?

A nurse is caring for a client who is having a nonstress test. The fetal heart rate (FHR) baseline is 130 bpm, there is moderate variability, but there have been no accelerations or fetal movement. Which of the following actions should the nurse complete next?

A nurse is educating a client about a contraction stress test.

Which of the following is correct regarding the contraction stress test?